GPT-5.1-Codex
LLM
by openai ·
openai-gpt-51-codex-20251113
Context window
400K
Max output
128K
Providers
2
Best input
$1.25
About this model
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Providers & prices
| Provider | Input $/MTok | Output $/MTok | Context | Upstream ID |
|---|---|---|---|---|
| O OpenAI | $1.25 | $10.00 | 400K | openai/gpt-5.1-codex |
| MA Microsoft Azure | $1.25 | $10.00 | 400K | openai/gpt-5.1-codex |