GPT-5.1

About GPT-5.1

GPT-5.1 is an advanced reasoning foundation model by OpenAI featuring modular architecture and dynamic thinking allocation. It is optimized for multi-file software engineering, automated data synthesis, and complex agentic pipelines.

Technical Specifications

Detailed architecture specifications are limited for proprietary models.

Resources

About GPT-5

OpenAI's latest generation of language models featuring advanced reasoning capabilities, extended context windows up to 400K tokens, and specialized variants for coding, general intelligence, and efficiency. GPT-5 series introduces improved thinking modes, superior performance across benchmarks, and variants optimized for different use cases from high-capacity Pro models to efficient Nano models. Features native multimodal understanding, enhanced mathematical reasoning, and state-of-the-art coding abilities through Codex variants.

Other GPT-5 Models

• GPT-5 Mini
• GPT-5.4
• GPT-5.2 Codex
• GPT-5 Nano
• GPT-5.1 Codex
• GPT-5 Pro
• GPT-5.1 Codex Mini
• GPT-5.2