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GPT-5.1 Codex Mini

deprecated

Smaller, faster version of GPT-5.1 Codex for efficient coding tasks.

400K context·$0.25 in·$2.00 out·Nov 2025 release·Vision, Reasoning, Tools / functions, Web search, Image output

Available on

OpenAI OpenRouter

Providers

Where GPT-5.1 Codex Mini runs in Big-AGI, with each service's own model ID and USD-per-1M-token rates. The summary above prefers the creator's claim; rates below are each service's own.

ServiceModel IDContextInputOutputCache read

OpenAI

creatordelisted

gpt-5.1-codex-mini

400K

$0.25

$2.00

$0.03

OpenRouter

openai/gpt-5.1-codex-mini

400K

$0.25

$2.00

$0.03

Specs as reported by each service · usage over the last 2 days · refreshed hourly

Run GPT-5.1 Codex Mini in Big-AGI.

Connect your own key on any of the services above, at their rates, no markup - and run it side by side with every other model.

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