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GPT-5.3 Codex API pricing

Compare the published GPT-5.3 Codex (gpt-5.3-codex) list rate with corouter's outlet rate, and estimate a monthly token bill. GPT-5.3 Codex is a coding ID with a 272K window. Its list rate matches GPT-5.2 Codex; the difference you bill is the ID itself, gpt-5.3-codex.

OpenAI
GPT-5.3 Codex
OpenAI
−80%
Model ID
gpt-5.3-codex
Context window
272K
Vendor
OpenAI
Modalities
ChatReasoningCodeVision
List pricecorouter
Input / Mtok$1.75$0.350
Cached input / Mtok$0.175$0.035
Output / Mtok$14.00$2.80

Prices in USD per million tokens, verified against official pricing pages on 2026-09-28.

Where this model fits

  • Coding clients that request gpt-5.3-codex by ID
  • Review loops that fit a 272K window
  • A side-by-side check against gpt-5.2-codex at the same list rate

Estimates only. Actual billing depends on your real token counts, cache hit rate, and the prices in effect at request time.

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