Skip to content

GPT-5.1-Codex

openai/gpt-5.1-codex

context
400K
modalities
text, image → text
capabilities
Tool use, Reasoning, Vision, Structured output, Long context

Overview

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

Access method depends on provider and account setup.

Pricing

  • Azure

    input / 1M
    $1.25
    output / 1M
    $10.00

Use this model through Nautili

Route requests to GPT-5.1-Codex through your Nautili gateway using a supported SDK or the Nautili SDK.

Connect your stack to Nautili

Route across supported providers through one control layer.