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GPT-5 Codex

deprecated

A version of GPT-5 optimized for agentic coding in Codex.

400K context·$1.25 in·$10.00 out·Sep 2025 release·Vision, Reasoning, Tools / functions, Web search

Available on

OpenAI OpenRouter

Providers

Where GPT-5 Codex 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-codex

400K

$1.25

$10.00

$0.13

OpenRouter

delisted

openai/gpt-5-codex

400K

$1.25

$10.00

$0.13

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

Run GPT-5 Codex 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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