models.md Codex Docs, 2026-03-07 06:14 UTC → 2026-04-21 18:29 UTC

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27API Access27API Access

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29![gpt-5.4-mini](/images/api/models/gpt-5-mini.jpg)

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31gpt-5.4-mini

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33Fast, efficient mini model for responsive coding tasks and subagents.

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35codex -m gpt-5.4-mini

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37Copy command

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39Capability

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41Speed

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43Codex CLI & SDK

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45Codex app & IDE extension

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47Codex Cloud

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49ChatGPT Credits

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51API Access

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29![gpt-5.3-codex](/images/codex/codex-wallpaper-1.webp)53![gpt-5.3-codex](/images/codex/codex-wallpaper-1.webp)

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31gpt-5.3-codex55gpt-5.3-codex

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77For most tasks in Codex, start with `gpt-5.4`. It combines strong coding,101For most tasks in Codex, start with `gpt-5.4`. It combines strong coding,

78reasoning, native computer use, and broader professional workflows in one102reasoning, native computer use, and broader professional workflows in one

79model. The `gpt-5.3-codex-spark` model is available in research preview for103model. Use `gpt-5.4-mini` when you want a faster, lower-cost option for

80ChatGPT Pro subscribers and is optimized for near-instant, real-time coding104lighter coding tasks or subagents. The `gpt-5.3-codex-spark` model is

81iteration.105available in research preview for ChatGPT Pro subscribers and is optimized for

106near-instant, real-time coding iteration.

82 107 

83## Alternative models108## Alternative models

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

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87gpt-5.2-codex

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89Advanced coding model for real-world engineering. Succeeded by GPT-5.3-Codex.

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91codex -m gpt-5.2-codex

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93Copy command

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95Show details

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97![gpt-5.2](/images/api/models/gpt-5.2.jpg)110![gpt-5.2](/images/api/models/gpt-5.2.jpg)

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99gpt-5.2112gpt-5.2

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101Previous general-purpose model for coding and agentic tasks across industries and domains. Succeeded by GPT-5.4.114Previous general-purpose model for coding and agentic tasks, including hard debugging tasks that benefit from deeper deliberation.

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103codex -m gpt-5.2116codex -m gpt-5.2

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106 119 

107Show details120Show details

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109![gpt-5.1-codex-max](/images/api/models/gpt-5.1-codex-max.jpg)

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111gpt-5.1-codex-max

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113Optimized for long-horizon, agentic coding tasks in Codex.

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115codex -m gpt-5.1-codex-max

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117Copy command

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119Show details

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121![gpt-5.1](/images/api/models/gpt-5.1.jpg)

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123gpt-5.1

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125Great for coding and agentic tasks across domains. Succeeded by GPT-5.2.

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127codex -m gpt-5.1

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129Copy command

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131Show details

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133![gpt-5.1-codex](/images/api/models/gpt-5.1-codex.jpg)

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135gpt-5.1-codex

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137Optimized for long-running, agentic coding tasks in Codex. Succeeded by GPT-5.1-Codex-Max.

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139codex -m gpt-5.1-codex

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141Copy command

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143Show details

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145![gpt-5-codex](/images/api/models/gpt-5-codex.jpg)

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147gpt-5-codex

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149Version of GPT-5 tuned for long-running, agentic coding tasks. Succeeded by GPT-5.1-Codex.

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151codex -m gpt-5-codex

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153Copy command

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155Show details

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157![gpt-5-codex-mini](/images/api/models/gpt-5-codex.jpg)

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159gpt-5-codex-mini

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161Smaller, more cost-effective version of GPT-5-Codex. Succeeded by GPT-5.1-Codex-Mini.

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163codex -m gpt-5-codex

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165Copy command

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167Show details

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169![gpt-5](/images/api/models/gpt-5.jpg)

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171gpt-5

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173Reasoning model for coding and agentic tasks across domains. Succeeded by GPT-5.1.

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175codex -m gpt-5

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177Copy command

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179Show details

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181## Other models122## Other models

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183Codex works best with the models listed above.124When you sign in with ChatGPT, Codex works best with the models listed above.

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185You can also point Codex at any model and provider that supports either the [Chat Completions](https://platform.openai.com/docs/api-reference/chat) or [Responses APIs](https://platform.openai.com/docs/api-reference/responses) to fit your specific use case.126You can also point Codex at any model and provider that supports either the [Chat Completions](https://platform.openai.com/docs/api-reference/chat) or [Responses APIs](https://platform.openai.com/docs/api-reference/responses) to fit your specific use case.

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