GPT-5.3-Codex
- In Input modalities: TextImage Out Output modalities: Text
- Reasoning· low, medium, high, xhigh
- Reasoning can be off
- Tool use
- Structured output
Prices
2 offerings · prices as listed OpenAI API (opens in a new tab)
gpt-5.3-codex| Conditions/ 1M tokens | Input | Cache read | Output |
|---|---|---|---|
| Standard | $1.75 | $0.175 | $14.00 |
| Fast tier | $3.50 | $0.35 | $28.00 |
Prices from OpenAI API pricing (opens in a new tab) (checked Nov 9, 2026)
Standard: the price a request with no conditions pays (the headline price elsewhere on the site).
Details
- Max input
- 272K
- Knowledge cutoff
- Aug 2025
- Open weights
- —
- Family
- gpt-codex
- Model ID
Not stated on OpenAI’s pages: max thinking budget, built-in tools, aliases.
Cited scores
From third-party leaderboards, not measured by us- Epoch AI · SWE-bench Verified 74.8%
#13 of 30 listed models · high effort · ±1.98
- Epoch AI, 'Capabilities & benchmarking'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks'. Licensed CC BY 4.0. · License · as of Oct 7, 2026
- changes we made
Included in coding plans
- GitHub Copilot Pro $10.00 / month1,500 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.15 USD of usage per month
- GitHub Copilot Pro+ $39.00 / month7,000 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.70 USD of usage per month
- GitHub Copilot Max $100.00 / month20,000 credits per monthVariable additional usage on top of your base. Flex allotments may change over time.
- GitHub Copilot Business $19.00 / month1,900 credits per month
- GitHub Copilot Enterprise $39.00 / month3,900 credits per month
News
All news →- Oct 1, 2026Retirement OpenAI deprecates TTS-1, TTS-1 HD, GPT-5.4 nano and 2 more TTS-1, TTS-1 HD, GPT-5.4 nano, GPT-5.3-Codex and GPT-5.1 are now deprecated and shut down on 2027-01-06.
Changes
All changes →- Available → Deprecated
Sources
- Azure OpenAI pricing (opens in a new tab) azure.microsoft.com · checked Nov 8, 2026
- OpenAI API pricing (opens in a new tab) developers.openai.com · checked Nov 9, 2026
- GPT-5.3 Codex model (opens in a new tab) developers.openai.com · checked Nov 8, 2026
- Changelog (opens in a new tab) developers.openai.com · checked Nov 9, 2026
- Azure AI Foundry: model retirement schedule (opens in a new tab) learn.microsoft.com · checked Nov 10, 2026
- models.dev: gpt-5.3-codex (community data, MIT) (opens in a new tab) github.com · checked Sep 30, 2026
- Deprecations (opens in a new tab) developers.openai.com · checked Nov 8, 2026
- GPT-5.3-Codex (opens in a new tab) developers.openai.com · checked Nov 4, 2026
OpenAI’s official policies: data use, privacy, terms →
Some values on this page are still waiting to be checked against official pages: a filled dot is verified, a hollow one is not yet (with or without a source on file). How we verify data
OpenAI · United States · openai.com
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