GPT-5.1
openai/gpt-5.1-20251113
Usage data date 2026-07-26 · updated daily
Usage and specs
What is GPT-5.1
GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning to allocate computation dynamically, responding quickly to simple queries while spending more depth on complex tasks. The model produces clearer, more grounded explanations with reduced jargon, making it easier to follow even on technical or multi-step problems. Built for broad task coverage, GPT-5.1 delivers consistent gains across math, coding, and structured analysis workloads, with more coherent long-form answers and improved tool-use reliability. It also features refined conversational alignment, enabling warmer, more intuitive responses without compromising precision. GPT-5.1 serves as the primary full-capability successor to GPT-5
GPT-5.1 capabilities
Input: Image、Text、File Output: Text
GPT-5.1 API pricing
List prices in USD; see each provider’s site for current terms.
Tools built on this model
ChatGPT
Best for people or teams exploring chat and assistance; not suitable for high-risk decisions without human review and current official terms.
GPT-4
Best for people or teams exploring model training and use; not suitable for high-risk decisions without human review and current official terms.
DALL·E 3
Best for people or teams exploring model training and use; not suitable for high-risk decisions without human review and current official terms.
Codex
Best for professional developers and engineering teams that want to delegate development, refactoring, and ops work to an AI agent; not for non-programmers or users who only need simple code completion.
StudyCorgi ChatGPT Detector
Suitable for students and teachers who need a free, fast way to screen essays and assignments; not suitable for users who must scan very long documents or batches of files.