GPT-5.1

Overview

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...

How to use / API access

Call via OpenRouter with model id `openai/gpt-5.1`.

• openrouter · openai/gpt-5.1 Docs

OpenRouter id: openai/gpt-5.1

Benchmarks

• Intelligence Index (artificial-analysis) : 36.9 index
• Coding Index (artificial-analysis) : 49.4 index
• Agentic Index (artificial-analysis) : 21 index
• Design Arena mobileapps (other) : 1120 elo · #31
• Design Arena 3d (other) : 1137 elo · #69
• Design Arena asciiart (other) : 1164 elo · #37
• Design Arena codecategories (other) : 1214 elo · #43

Notes

GPT-5.1 is listed in the EDNA Models directory from the OpenRouter catalogue.