# Ai Writing Assistant Software Market > AI Writing Assistant Software Market Size, Share and Research Report: By Deployment Model (Cloud, On-premise), By Application (Content Creation, Content Optimization, Code Generation, Language Translation, Data Extraction), By End User (Marketing and Advertising, Content Writing and Editing, Education, Healthcare, Legal), By Industry (Media and Entertainment, E-commerce, Travel and Hospitality, Finance, Technology) and By Regional (North America, Europe, South America, Asia Pacific, Middle East and Africa) - Industry Forecast to 2035 - **Forecast Period:** 2025 - 2035 - **CAGR:** 36.65% - **2024:** $ 65.12 Billion - **2025:** $ 88.99 Billion - **2035:** $ 2,020.72 Billion - **Key Players:** OpenAI (US), Google (US), Microsoft (US), Grammarly (US), Jasper (US), Copy.ai (US), Writesonic (US), Quillbot (US), Scribbr (NL) **Report ID:** MRFR/ICT/29388-HCR · **Pages:** 100 · **Author:** Nirmit Biswas & Aarti Dhapte · **Last Updated:** May 15, 2026 **URL:** https://www.marketresearchfuture.com/reports/ai-writing-assistant-software-market-31158 --- ## Market Summary ## **Ai Writing Assistant Software Market Overview** Ai Writing Assistant Software Market is projected to grow from USD 88.99 Billion in 2025 to USD 1478.73 Billion by 2034, exhibiting a compound annual growth rate (CAGR) of 36.65% during the forecast period (2025 - 2034). Additionally, the market size for Ai Writing Assistant Software Market was valued at USD 65.12 billion in 2024. ### **Key AI Writing Assistant Software Market Trends Highlighted** #### **Market Trends ** #### **The AI Writing Assistant Software Market is experiencing several notable trends: ** **Key Drivers:**The increasing demand for high-quality content, coupled with the need to reduce operational costs, is driving the adoption of AI-powered writing assistants. These tools offer businesses the ability to automate content creation tasks, freeing up human resources for more strategic initiatives. **Opportunities to Explore:**The market presents significant opportunities for software vendors to develop innovative solutions that cater to specific industry verticals. By tailoring their offerings to the unique requirements of industries such as healthcare, education, and finance, vendors can address the growing need for tailored content creation and enhance customer value. **Trends in Recent Times:**Recent advancements in machine learning and natural language processing (NLP) have significantly enhanced the capabilities of AI writing assistants. These tools now offer improved accuracy, coherence, and style, enabling them to generate content that is indistinguishable from human-written text. Additionally, the integration of AI writing assistants with collaboration tools and content management systems is streamlining content creation workflows and improving team productivity. **Figure 1: AI Writing Assistant Software Market, 2025 - 2034** Source: Primary Research, Secondary Research, _Market Research Future_ Database and Analyst Review ### **Ai Writing Assistant Software Market Drivers** #### **Rising Demand for Content Creation** The increasing demand for content across various industries, including marketing, e-commerce, media and entertainment, is driving the growth of the AI Writing Assistant Software Market Industry. Businesses and organizations are constantly seeking efficient and cost-effective ways to produce high-quality content to engage their target audience and establish a strong online presence. Ai writing assistants offer a solution by automating content creation tasks, enabling businesses to generate content at scale while maintaining consistency and quality. #### **Advancements in Artificial Intelligence (AI)** The AI writing Assistant Software Market Industry is being driven by the rapid progress in AI technologies. Advanced algorithms and natural language processing techniques are allowing AI writing assistants to provide human-like text. In fact, in some cases, it is impossible to differentiate between content generated by an AI writing assistant and human authors. Given that, AI writing assistants have become more helpful as their quality has improved with these advancements. #### **Growing Adoption of Cloud-Based Solutions** The increasing adoption of cloud-based solutions is another key driver of the AI writing Assistant Software Market Industry. Cloud-based AI writing assistants offer several benefits, including accessibility, scalability and cost-effectiveness. Businesses can access these services on demand, eliminating the need for upfront investment in hardware and software infrastructure. The cloud-based delivery model also allows for flexible scalability, enabling businesses to adjust their usage based on their content creation needs. ### **Ai Writing Assistant Software Market Segment Insights** #### **Ai Writing Assistant Software Market Deployment Model Insights** The AI Writing Assistant Software Market is segmented based on deployment model into cloud and on-premise. The cloud segment is expected to hold a larger market share in 2023 and is projected to continue its dominance throughout the forecast period. The growth of the cloud segment can be attributed to the increasing adoption of cloud-based solutions by businesses of all sizes. Cloud-based AI writing assistant software offers several advantages over on-premise solutions, such as scalability, flexibility, and cost-effectiveness. The on-premise segment is expected to witness a steady growth rate during the forecast period. On-premise AI writing assistant software is preferred by businesses that have strict data security and privacy requirements. On-premise solutions provide businesses with greater control over their data and security. In 2023, the AI writing Assistant Software Market revenue for the cloud segment is estimated to be around USD 23.247 billion, while the on-premise segment is expected to generate revenue of around USD 11.623 billion. By 2032, the cloud segment is projected to reach a market size of around USD 422.275 billion, while the on-premise segment is expected to reach a market size of around USD 157.055 billion.The growth of the cloud segment is expected to be driven by the increasing adoption of cloud-based solutions, while the growth of the on-premise segment is expected to be driven by the increasing demand for data security and privacy. **Figure 2: AI Writing Assistant Software Market, By Condition, 2023 & 2032** Source: Primary Research, Secondary Research, _Market Research Future_ Database and Analyst Review ### **Ai Writing Assistant Software Market Application Insights** The AI Writing Assistant Software Market is segmented into various applications, including content creation, content optimization, code generation, language translation and data extraction. Content creation is expected to hold the largest market share in 2023, owing to the growing demand for high-quality content across various industries. Content optimization is anticipated to witness significant growth during the forecast period, driven by the need to improve content visibility and engagement. Code generation is projected to gain traction due to the rising adoption of AI in software development.Language translation is expected to grow steadily, fueled by the increasing globalization of businesses. Data extraction is anticipated to gain momentum as organizations seek to leverage AI to extract valuable insights from unstructured data. ### **Ai Writing Assistant Software Market End User Insights** The AI Writing Assistant Software Market revenue from the Marketing and Advertising segment is projected to grow from USD 2.34 billion in 2023 to USD 19.95 billion by 2032, exhibiting a CAGR of 31.2%. The content Writing and Editing segment is anticipated to be valued at USD 12.57 billion by 2032, advancing at a CAGR of 38.6% from USD 2.34 billion in 2023. The Education segment is expected to reach USD 9.98 billion by 2032, expanding at a CAGR of 35.5% from USD 1.99 billion in 2023. The Healthcare segment is projected to be valued at USD 7.46 billion by 2032, growing at a CAGR of 34.6% from USD 1.48 billion in 2023.The Legal segment is expected to reach USD 6.48 billion by 2032, expanding at a CAGR of 33.7% from USD 1.29 billion in 2023. ### **Ai Writing Assistant Software Market Industry Insights** The AI writing Assistant Software Market is segmented into various industries, including Media and Entertainment, E-commerce, Travel and Hospitality, Finance and Technology. Each industry presents unique opportunities and challenges for AI writing assistant software. In the Media and Entertainment industry, AI writing assistants are used to generate engaging and informative content for websites, social media, and marketing campaigns. The AI writing assistant software market in Media and Entertainment is projected to reach USD 10.2 billion in 2023, exhibiting a CAGR of 34.5% from 2023 to 2032.In E-commerce, AI writing assistants help businesses create product descriptions, marketing copy, and customer service responses. The AI writing assistant software market in E-commerce is anticipated to total USD 4.5 billion in 2023, growing at a CAGR of 32.1% from 2023 to 2032.  In the Travel and Hospitality industry, AI writing assistants are employed to generate travel guides, hotel descriptions, and personalized trip recommendations. The AI writing assistant software market in Travel and Hospitality is expected to reach USD 3.6 billion in 2023, with a CAGR of 31.2% from 2023 to 2032.In the Finance industry, AI writing assistants assist in generating financial reports, market analysis, and investment recommendations. The AI writing assistant software market in Finance is estimated to total USD 2.8 billion in 2023, projecting a CAGR of 30.4% from 2023 to 2032. In the Technology industry, AI writing assistants are utilized to create technical documentation, software code, and user manuals. The AI writing assistant software market in Technology is expected to reach USD 1.9 billion in 2023, with a CAGR of 29.6% from 2023 to 2032. ### **Ai Writing Assistant Software Market Regional Insights** The AI Writing Assistant Software Market is segmented into North America, Europe, APAC, South America and MEA. North America is the largest region in the AI writing Assistant Software Market, with a market share of over 40%. The region is home to some of the leading vendors in the market, such as Google, Microsoft, and IBM. Europe is the second-largest region in the AI writing Assistant Software Market, with a market share of over 30%. The region is home to a number of large enterprises that are using Ai Writing Assistant Software to improve their content creation processes.APAC is the fastest-growing region in the AI writing Assistant Software Market, with a CAGR of over 25%. The region is home to a number of emerging markets that are rapidly adopting AI writing Assistant Software. South America and MEA are the smallest regions in the AI writing Assistant Software Market, with market shares of less than 10%. However, these regions are expected to grow at a healthy pace in the coming years due to the increasing adoption of AI writing Assistant Software by businesses of all sizes. **Figure 3: AI Writing Assistant Software Market, By Regional, 2023 & 2032** Source: Primary Research, Secondary Research, _Market Research Future_ Database and Analyst Review ### **Ai Writing Assistant Software Market Key Players And Competitive Insights** Major players in AI writing Assistant Software Market are continuously investing in research and development to enhance their offerings and gain a competitive edge. They are also focusing on strategic partnerships and acquisitions to expand their market reach and strengthen their product portfolios. Leading AI writing Assistant Software Market players are also actively involved in mergers and acquisitions to consolidate their market position and gain access to new technologies and capabilities. The AI writing Assistant Software Market industry is characterized by intense competition, with numerous players vying for market share. These companies are constantly innovating and developing new features to attract and retain customers. Jasper is a leading company in the AI writing Assistant Software Market, known for its advanced AI technology and user-friendly interface. It offers a wide range of features, including long-form content creation, blog post writing, email composition, and social media content generation. Jasper's AI-powered writing assistant helps users create high-quality, engaging content quickly and efficiently. The company has a strong customer base and has received positive reviews for its products and services. Grammarly is another prominent player in the AI writing Assistant Software Market. It provides a comprehensive suite of writing tools, including grammar checking, plagiarism detection, and style suggestions. Grammarly's AI-powered assistant helps users improve the clarity, accuracy, and consistency of their writing. The company has a large user base and is widely recognized for its high-quality products and services. Grammarly has a strong focus on research and development and is continuously improving its AI capabilities to provide users with the best possible writing experience. ### **Key Companies in the Ai Writing Assistant Software Market Include** ### **Ai Writing Assistant Software Market Industry Developments** The AI Writing Assistant Software Market is projected to grow from USD 34.87 billion in 2024 to USD 579.2 billion by 2032, exhibiting a CAGR of 36.65% during the forecast period. The market growth is attributed to the increasing adoption of AI-powered content creation tools, rising demand for personalized and engaging content, and growing need for efficient content production. Recent developments include the integration of AI writing assistants with popular productivity platforms, advancements in natural language processing (NLP) and machine learning (ML) algorithms, and the emergence of AI-powered content optimization tools. Key players in the market are investing heavily in research and development to enhance the capabilities of their AI writing assistants and expand their market share. ### **Ai Writing Assistant Software Market Segmentation Insights** ## Market Drivers ### Growing Emphasis on Data Security The AI Writing Assistant Software Market is increasingly characterized by a growing emphasis on data security and privacy. As organizations adopt AI writing tools, concerns regarding the handling of sensitive information become paramount. The implementation of robust security measures is essential to gain user trust and ensure compliance with data protection regulations. Reports indicate that The AI Writing Assistant Software is expected to reach over 150 billion by 2025, underscoring the importance of security in software adoption. AI writing assistants that prioritize data security are likely to attract more users, as businesses seek solutions that not only enhance productivity but also safeguard their proprietary information. ### Increased Focus on Personalization The AI Writing Assistant Software Market is witnessing a heightened focus on personalization features. As users demand more tailored writing experiences, AI tools are evolving to provide customized suggestions based on individual writing styles and preferences. This trend is particularly relevant in sectors such as marketing and education, where personalized content can lead to improved engagement and learning outcomes. Research suggests that personalized marketing can increase conversion rates by up to 10%, highlighting the potential impact of AI writing assistants that adapt to user needs. Consequently, the development of sophisticated algorithms that analyze user behavior and preferences is likely to drive further growth in the AI writing assistant market. ### Rising Demand for Content Creation The AI Writing Assistant Software Market experiences a notable surge in demand for content creation tools. As businesses and individuals increasingly recognize the importance of high-quality content for digital marketing and communication, the need for efficient writing solutions becomes paramount. Reports indicate that the content marketing industry is projected to reach a valuation of over 400 billion by 2025, suggesting a robust market for AI writing tools. These tools not only enhance productivity but also ensure consistency and creativity in content generation, making them indispensable for marketers, bloggers, and corporate communicators alike. The integration of AI technologies into writing processes allows for faster turnaround times and improved engagement metrics, further driving the adoption of AI writing assistants. ### Integration with Other Digital Tools The AI Writing Assistant Software Market benefits from the growing trend of integration with other digital tools and platforms. As organizations seek to streamline their workflows, the ability to incorporate AI writing assistants into existing software ecosystems becomes increasingly attractive. This integration allows for seamless collaboration across teams, enhancing productivity and ensuring that content creation aligns with broader business objectives. For instance, AI writing tools that integrate with project management and communication platforms can significantly reduce the time spent on revisions and approvals. The market for integrated software solutions is projected to expand, indicating a favorable environment for AI writing assistants that offer compatibility with popular tools. ### Advancements in Natural Language Processing The AI Writing Assistant Software Market is significantly influenced by advancements in Natural Language Processing (NLP) technologies. These innovations enable AI writing tools to understand and generate human-like text with remarkable accuracy. As NLP algorithms evolve, they facilitate more nuanced and context-aware writing assistance, which is crucial for users seeking to produce compelling narratives. The market for NLP is expected to grow substantially, with estimates suggesting a compound annual growth rate of over 20% through the next few years. This growth indicates a strong correlation between NLP advancements and the increasing capabilities of AI writing assistants, allowing users to create content that resonates more effectively with their target audiences. ## Future Outlook The AI Writing Assistant Software Market is projected to grow at a 36.65% CAGR from 2025 to 2035, driven by advancements in natural language processing and increasing demand for content automation. **New opportunities:** - Integration of AI writing tools in e-learning platforms - Development of industry-specific writing assistants - Partnerships with content marketing agencies for tailored solutions By 2035, the market is expected to be robust, reflecting substantial growth and innovation. ## Segment Insights ### By Deployment Model: Cloud (Largest) vs. On-Premise (Fastest-Growing) In the AI Writing Assistant Software Market, the deployment model segment showcases a notable distribution between cloud and on-premise solutions. Cloud-based deployments have emerged as the largest segment, favored by businesses seeking scalability, cost-effectiveness, and accessibility. In contrast, on-premise solutions are gaining traction, particularly among organizations with strict data privacy requirements and a preference for local control over their software environments. This shift indicates a diversification in deployment preferences based on organizational needs and infrastructure capabilities. Deployment Model: Cloud (Dominant) vs. On-Premise (Emerging) Cloud deployment of AI writing assistant software is currently dominating the market due to its flexibility, lower initial setup costs, and ease of updates and maintenance. This model allows users to access robust functionalities without the burden of maintaining hardware. On the other hand, on-premise solutions are emerging as a preferred choice for sectors that prioritize security and compliance, offering organizations full control over their data and systems. These on-premise models are experiencing growth driven by industries requiring stringent data regulations, showcasing a shift toward customized deployment options in response to growing security concerns. ### By Application: Content Creation (Largest) vs. Code Generation (Fastest-Growing) The AI Writing Assistant Software market showcases a diverse range of applications, with content creation leading the charge. It has established itself as the dominant segment, capturing the largest share due to an increasing demand for high-quality written content across various industries. Following closely are content optimization and language translation, which also hold substantial portions of the market. Code generation, although smaller in market presence, is rapidly gaining traction as the need for automated programming assistance escalates. Content Creation (Dominant) vs. Code Generation (Emerging) Content creation has emerged as the dominant segment within the AI Writing Assistant Software market, catering to marketing teams, bloggers, and businesses seeking to enhance their content strategies. Its robust features enable users to generate articles, blog posts, and social media content tailored to specific audiences. On the other hand, code generation is rapidly becoming an emerging segment, providing significant value to developers by automating complex coding tasks. This evolution is fueled by the increasing integration of AI in software development, allowing for more efficient coding practices and error reduction. ### By End User: Content Writing and Editing (Largest) vs. Marketing and Advertising (Fastest-Growing) In the AI Writing Assistant Software Market, the largest share belongs to the Content Writing and Editing segment, which caters to a wide array of professionals seeking efficiency in generating text. This segment has seen strong adoption due to the increasing demand for high-quality written content across various platforms, including blogs, articles, and social media. Meanwhile, the Marketing and Advertising sector is emerging as the fastest-growing segment, propelled by the need for personalized content strategies that enhance customer engagement and brand loyalty. Content Writing and Editing (Dominant) vs. Marketing and Advertising (Emerging) The Content Writing and Editing segment plays a critical role in the AI Writing Assistant Software Market, catering to professionals like writers and editors who prioritize quality and speed. Characterized by tools that streamline the content creation process, this segment is marked by its extensive use across various industries, including media and publishing. In contrast, the Marketing and Advertising segment is gaining momentum as brands increasingly leverage AI to create tailored marketing messages. By integrating AI solutions, this segment can quickly analyze consumer behavior, producing content that resonates with target audiences and keeps pace with dynamic market conditions. ### By Industry: Media and Entertainment (Largest) vs. E-commerce (Fastest-Growing) In the AI Writing Assistant Software Market, the Media and Entertainment industry holds the largest market share, driven by a significant demand for content creation, editing, and personalization. Key players in this sector utilize AI tools to enhance workflow efficiencies, enabling more effective storytelling and audience engagement strategies. E-commerce, while smaller in comparison, represents the fastest-growing segment as businesses increasingly adopt AI writing assistants to create compelling product descriptions and marketing content that drive consumer engagement and conversion rates. E-commerce: Content Generation (Dominant) vs. Personalization Tools (Emerging) The E-commerce sector leverages AI Writing Assistant Software predominantly for content generation, allowing companies to automatically create engaging product descriptions and tailored email communications. This dominant approach streamlines operations and reduces the time spent on manual writing tasks. However, emerging personalization tools are gaining traction, enabling e-commerce businesses to deliver tailored experiences to customers based on their preferences. This growth is encouraged by the increasing need for hyper-personalized marketing, which drives customer retention and satisfaction. As both segments evolve, they play integral roles in enhancing online shopping experiences. ## Regional Market Share Analysis The AI Writing Assistant Software Market is segmented into North America, Europe, APAC, South America and MEA. North America is the largest region in the AI writing Assistant Software Market, with a market share of over 40%. The region is home to some of the leading vendors in the market, such as Google, Microsoft, and IBM. Europe is the second-largest region in the AI writing Assistant Software Market, with a market share of over 30%. The region is home to a number of large enterprises that are using Ai Writing Assistant Software Market to improve their content creation processes.APAC is the fastest-growing region in the AI writing Assistant Software Market, with a CAGR of over 25%. The region is home to a number of emerging markets that are rapidly adopting AI writing Assistant Software. South America and MEA are the smallest regions in the AI writing Assistant Software Market, with market shares of less than 10%. However, these regions are expected to grow at a healthy pace in the coming years due to the increasing adoption of AI writing Assistant Software by businesses of all sizes. ## Competitive Benchmarking Major players in AI writing Assistant Software Market are continuously investing in research and development to enhance their offerings and gain a competitive edge. They are also focusing on strategic partnerships and acquisitions to expand their market reach and strengthen their product portfolios. Leading AI writing Assistant Software Market players are also actively involved in mergers and acquisitions to consolidate their market position and gain access to new technologies and capabilities. The AI writing Assistant Software Market industry is characterized by intense competition, with numerous players vying for market share. These companies are constantly innovating and developing new features to attract and retain customers. Jasper is a leading company in the AI writing Assistant Software Market, known for its advanced AI technology and user-friendly interface. It offers a wide range of features, including long-form [content creation](https://www.marketresearchfuture.com/reports/content-creation-software-market-31609), blog post writing, email composition, and social media content generation. Jasper's AI-powered writing assistant helps users create high-quality, engaging content quickly and efficiently. The company has a strong customer base and has received positive reviews for its products and services. Grammarly is another prominent player in the AI writing Assistant Software Market. It provides a comprehensive suite of writing tools, including grammar checking, plagiarism detection, and style suggestions. Grammarly's AI-powered assistant helps users improve the clarity, accuracy, and consistency of their writing. The company has a large user base and is widely recognized for its high-quality products and services. Grammarly has a strong focus on research and development and is continuously improving its AI capabilities to provide users with the best possible writing experience. ## Recent News & Developments The AI Writing Assistant Software Market is projected to grow from USD 34.87 billion in 2024 to USD 579.2 billion by 2032, exhibiting a CAGR of 36.65% during the forecast period. The market growth is attributed to the increasing adoption of AI-powered content creation tools, rising demand for personalized and engaging content, and growing need for efficient content production. Recent developments include the integration of AI writing assistants with popular productivity platforms, advancements in natural language processing (NLP) and machine learning (ML) algorithms, and the emergence of AI-powered content optimization tools. Key players in the market are investing heavily in research and development to enhance the capabilities of their AI writing assistants and expand their market share. ## Report Scope | MARKET SIZE 2024 | 65.12(USD Billion) | | --- | --- | | MARKET SIZE 2025 | 88.99(USD Billion) | | MARKET SIZE 2035 | 2020.72(USD Billion) | | COMPOUND ANNUAL GROWTH RATE (CAGR) | 36.65% (2025 - 2035) | | REPORT COVERAGE | Revenue Forecast, Competitive Landscape, Growth Factors, and Trends | | BASE YEAR | 2024 | | Market Forecast Period | 2025 - 2035 | | Historical Data | 2019 - 2024 | | Market Forecast Units | USD Billion | | Key Companies Profiled | OpenAI (US), Google (US), Microsoft (US), Grammarly (US), Jasper (US), Copy.ai (US), Writesonic (US), Quillbot (US), Scribbr (NL) | | Segments Covered | Deployment Model, Application, End User, Industry, Regional | | Key Market Opportunities | Integration of advanced natural language processing enhances user experience in the AI Writing Assistant Software Market. | | Key Market Dynamics | Rising demand for personalized content drives innovation and competition in the AI Writing Assistant Software market. | | Countries Covered | North America, Europe, APAC, South America, MEA | ## Frequently Asked Questions **Q: What is the current valuation of the AI Writing Assistant Software Market as of 2024?** A: The AI Writing Assistant Software Market was valued at 65.12 USD Billion in 2024. **Q: What is the projected market size for the AI Writing Assistant Software Market in 2035?** A: The market is projected to reach 2020.72 USD Billion by 2035. **Q: What is the expected CAGR for the AI Writing Assistant Software Market during the forecast period 2025 - 2035?** A: The expected CAGR for the market during 2025 - 2035 is 36.65%. **Q: Which deployment model holds a larger market share in the AI Writing Assistant Software Market?** A: The Cloud deployment model appears to dominate with a valuation of 39.07 USD Billion compared to the On-premise model at 26.05 USD Billion. **Q: What are the primary applications of AI Writing Assistant Software?** A: Key applications include Content Creation, Language Translation, and Data Extraction, with valuations of 15.0 USD Billion, 20.0 USD Billion, and 15.12 USD Billion respectively. **Q: Which end-user segment is expected to contribute the most to the AI Writing Assistant Software Market?** A: The Content Writing and Editing segment is projected to lead with a valuation of 15.0 USD Billion. **Q: How does the AI Writing Assistant Software Market perform across different industries?** A: The E-commerce industry is anticipated to have a significant impact, with a valuation of 15.0 USD Billion. **Q: Who are the key players in the AI Writing Assistant Software Market?** A: Prominent players include OpenAI, Google, Microsoft, Grammarly, and Jasper, among others. **Q: What is the valuation of the Language Translation application within the market?** A: The Language Translation application is valued at 20.0 USD Billion. **Q: What trends are shaping the future of the AI Writing Assistant Software Market?** A: Trends suggest a growing demand for advanced features in Content Optimization and Code Generation, with respective valuations of 10.0 USD Billion and 5.0 USD Billion. --- *This Markdown endpoint is provided for AI systems and LLM crawlers. For the full interactive report visit https://www.marketresearchfuture.com/reports/ai-writing-assistant-software-market-31158*