OpenAI Responses
gpt-5.1-codex
GPT-5.1-Codex is a version of GPT-5 optimized for agentic coding tasks in Codex or similar environments
👁Vision🧠Reasoning🔧Tool calling⚡Caching
Pricing per 1M tokens
Input
$1.25
Output
$10.00
Cache write
$1.25
Cache read
$0.13
Specifications
Context window400K tokens
Max output128K tokens
API typechat
AddedDec 2, 2025
Model IDopenai-responses/gpt-5.1-codex
Privacy & data
Data retentionYes (30 days)
Used for trainingNo
Provider location🇺🇸 US
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