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GPT 5.3 Codex (Fast)

openai/gpt-5.3-codex-fast

Text 1 gateway

Where you can run it

Gateway Its id Context Max output Input / Mtok Output / Mtok
Vercel AI Gateway openai/gpt-5.3-codex-fast 400K 128K $3.50 $28.00

Prices are US dollars per million tokens, as published in each gateway's own catalog at the last crawl. A dash means that gateway publishes no value — not that it is free.

Canonical id
openai/gpt-5.3-codex-fast
Vendor
OpenAI
Type
Text
Gateways serving it
Vercel
Largest context window
400K tokens
Input price range
$3.50 / Mtok
Cataloged since
History

What changed for GPT 5.3 Codex (Fast)

Recorded by the daily catalog crawl — when gateways picked this model up, dropped it, or repriced it.