Darius Baruo
Nov 13, 2025 18:57
OpenAI’s GPT-5.1 is now available in Harvey, offering improved dynamic thinking and better-structured outputs, ideal for legal and strategic applications.
OpenAI’s latest AI language model, GPT-5.1, has been officially launched in Harvey, marking a significant advancement in artificial intelligence technology, according to Harvey.ai. This release is set to enhance the capabilities of AI applications within various sectors, particularly in legal and strategic analysis.
Advanced Capabilities
GPT-5.1 is designed to improve upon its predecessors by offering dynamic thinking times and enhancements in formatting, style, and personality. These improvements are expected to yield more detailed and structured outputs, which are crucial for tasks requiring high levels of precision and clarity, such as research and strategic analysis.
Performance and Evaluation
The model has been evaluated using the BigLaw Bench evaluation suite, where it achieved an impressive score of 91.8%, the highest for the GPT series. This performance highlights GPT-5.1’s potential to meet the rigorous demands of elite legal practice, making it an invaluable tool for law firms and other sectors requiring meticulous attention to detail.
Rollout and Availability
Harvey plans to roll out GPT-5.1 to eligible clients in the United States and the European Union within the next 24 hours. This phased deployment will allow users to start integrating the model into their workflows, benefiting from its improved instruction-following capabilities and its ability to understand complex client standards and styles.
As AI technology continues to evolve, GPT-5.1 represents a significant step forward, offering enhanced functionality and versatility for a broad range of applications.
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