OpenAI: GPT-5.1-Codex

OpenAI

GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designe

Long context (400K+)Multimodal vision
TextVision
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Specifications

VendorOpenAI
Familyopenai
Context400K · 300k words（≈ a novella）
Max output400K · 300k words（≈ a novella）
Released2026-06-19
Open sourceNo
Tool use—

Pricing across channels

per 1M tokens, USD

ChannelTypeInputOutput→
OpenRouter (auto)Aggregator$1.25$10.00visitAd
OpenRouter API (auto-fetched)· 2026-06-19

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