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Model Launch 1 min read

Introducing GPT-5.1 for developers

Source: OpenAI Blog
November 13, 2025 · 10mo ago
Visual for Introducing GPT-5.1 for developers

Summary

GPT-5. 1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.

Why It Matters

New model releases reshape what developers can build. As capabilities advance, existing applications can be upgraded and entirely new use cases become feasible — making it critical for engineers to evaluate these releases early.

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