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GPT 5.1 Codex Max
OpenAI
openai/gpt-5.1-codex-max
Chat
Providers
1
Context
400K
Input
$1.25
/M
Output
$10.00
/M
Aliases:
gpt-5-1-codex-max
chatgpt-5.1-codex-max
gpt51-codex-max
A version of GPT-5.1-Codex optimized for long-running tasks.
Providers
Performance
Uptime
Benchmarks
Integrations
A version of GPT-5.1-Codex optimized for long-running tasks.
OpenAI
openai/gpt-5.1-codex-max
400K context
128K max out
Input Price
$1.25
/M tokens
Output Price
$10.00
/M tokens
Cache read:
$0.13
/M
Web search
$10.00
/1K searches
GPT 5.1 Codex Max - OpenAI | API Pricing & Providers | Concentrate.ai | Concentrate.ai