models.md Codex Docs, 2026-03-05 06:22 UTC → 2026-03-05 18:41 UTC

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3## Recommended models3## Recommended models

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5![gpt-5.4](/images/codex/codex-wallpaper-3.webp)

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7gpt-5.4

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9Flagship frontier model for professional work that brings the industry-leading coding capabilities of GPT-5.3-Codex together with stronger reasoning, tool use, and agentic workflows.

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11codex -m gpt-5.4

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13Copy command

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15Capability

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17Speed

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19Codex CLI & SDK

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21Codex app & IDE extension

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23Codex Cloud

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25ChatGPT Credits

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27API Access

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5![gpt-5.3-codex](/images/codex/codex-wallpaper-1.webp)29![gpt-5.3-codex](/images/codex/codex-wallpaper-1.webp)

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7gpt-5.3-codex31gpt-5.3-codex

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9Most capable agentic coding model to date, combining frontier coding performance with stronger reasoning and professional knowledge capabilities.33Industry-leading coding model for complex software engineering. Its coding capabilities now also power GPT-5.4.

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11codex -m gpt-5.3-codex35codex -m gpt-5.3-codex

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51API Access75API Access

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53The gpt-5.3-codex-spark model is available in research preview for ChatGPT Pro77For most tasks in Codex, start with `gpt-5.4`. It combines strong coding,

54subscribers. It is optimized for near-instant, real-time coding iteration.78reasoning, native computer use, and broader professional workflows in one

79model. The `gpt-5.3-codex-spark` model is available in research preview for

80ChatGPT Pro subscribers and is optimized for near-instant, real-time coding

81iteration.

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56## Alternative models83## Alternative models

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72gpt-5.299gpt-5.2

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74Our best general agentic model for tasks across industries and domains.101Previous general-purpose model for coding and agentic tasks across industries and domains. Succeeded by GPT-5.4.

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76codex -m gpt-5.2103codex -m gpt-5.2

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167The Codex CLI and IDE extension use the same `config.toml` [configuration file](https://developers.openai.com/codex/config-basic). To specify a model, add a `model` entry to your configuration file. If you don't specify a model, the Codex app, CLI, or IDE Extension defaults to a recommended model.194The Codex CLI and IDE extension use the same `config.toml` [configuration file](https://developers.openai.com/codex/config-basic). To specify a model, add a `model` entry to your configuration file. If you don't specify a model, the Codex app, CLI, or IDE Extension defaults to a recommended model.

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169```196```

170model = "gpt-5.2"197model = "gpt-5.4"

171```198```

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173### Choosing a different local model temporarily200### Choosing a different local model temporarily

177To start a new Codex CLI thread with a specific model or to specify the model for `codex exec` you can use the `--model`/`-m` flag:204To start a new Codex CLI thread with a specific model or to specify the model for `codex exec` you can use the `--model`/`-m` flag:

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179```bash206```bash

180codex -m gpt-5.3-codex207codex -m gpt-5.4

181```208```

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183### Choosing your model for cloud tasks210### Choosing your model for cloud tasks