models.md Codex Docs, 2026-03-03 18:20 UTC → 2026-03-05 06:22 UTC

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51API Access51API Access

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53The gpt-5.3-codex-spark model is available in research preview for ChatGPT Pro

54subscribers. It is optimized for near-instant, real-time coding iteration.

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56## Alternative models

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53![gpt-5.2-codex](/images/codex/gpt-5.2-codex.png)58![gpt-5.2-codex](/images/codex/gpt-5.2-codex.png)

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55gpt-5.2-codex60gpt-5.2-codex

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61Copy command66Copy command

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63Capability68Show details

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65Speed

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67Codex CLI & SDK

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69Codex app & IDE extension

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71Codex Cloud

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73ChatGPT Credits

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75API Access

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77For most coding tasks in Codex, start with gpt-5.3-codex. It is available for

78ChatGPT-authenticated Codex sessions in the Codex app, CLI, IDE extension, and

79Codex Cloud. API access for GPT-5.3-Codex will come soon. The

80gpt-5.3-codex-spark model is available in research preview for ChatGPT Pro

81subscribers.

82 

83## Alternative models

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85![gpt-5.2](/images/api/models/gpt-5.2.jpg)70![gpt-5.2](/images/api/models/gpt-5.2.jpg)

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