GPT-5.1 is now in the API. It’s faster, more steerable, and better at coding—plus, it ships with practical new tools. If you’re building apps or agents where intelligence, speed, and cost matter, GPT-5.1 should feel like a meaningful upgrade. ✨ Adaptive reasoning that uses fewer tokens on simple steps and spends more time when the task is hard ⏱️“No reasoning” mode so the model responds faster on simple tasks → it’s the default reasoning_effort setting 🗂️Extended prompt caching, which keeps prompts active for up to 24 hours—reducing cost and latency in long-running interactions. 🧭 A more steerable coding personality that produces cleaner diffs, shows clearer intent, and does less overthinking ⚡ Snappier interactive loops for quick edits, shell-style interactions, and iterative refinement 🧩 More predictable agent behavior that maintains task focus and handles long tool-call sequences consistently. We’re also shipping two new tools: apply_patch for reliable, freeform code edits, and shell tool to execute commands in controlled loops. Blog and resources in the first comment ↓
Thrilled to get this into builders hands! 👏 Leher Pathak Lindsay McCallum Rémy Hillary Bush Robyn Showers
This is fantastic for both Chat and Voice agents. I will be updating my client's agents so they can be ahead of their competitors. 🫱🏽🫲🏽
OpenAI, When will it be available in Azure? 🤩
The “adaptive reasoning” shift is the most interesting part — using fewer tokens for trivial steps and reallocating effort only where complexity actually exists. This is what scalable agent workflows really needed: predictable reasoning budgets, tighter loops, and lower variance in tool-call chains. GPT-5.1 looks like a meaningful step toward production-grade autonomy.
Mikołaj Romek maybe for Sollmate 2.0
🚀 Exciting announcement, OpenAI! I think the ultimate success of these new tools and agents turns on the foundation. Data Integrity and Quality Control are essential for reliable project rollouts and realizing optimized business value. #AI #DataAnalysis #BusinessIntelligence #DataQuality #dataanalyst 💡🤝
Super exited for this
System Analyst at ExxonMobil | SQL, Snowflake, Python | Data Analytics & Digital Transformation
1wLooks great! Love the prompting cookbook 😄 I’m looking forward to building something with GPT-5.1. I still have some money left on my dev account.