app/features.md Codex Docs, 2026-04-18 18:18 UTC → 2026-04-22 18:29 UTC

3The Codex app is a focused desktop experience for working on Codex threads in parallel,3The Codex app is a focused desktop experience for working on Codex threads in parallel,

4with built-in worktree support, automations, and Git functionality.4with built-in worktree support, automations, and Git functionality.

5 5 

6Most Codex app features are available on both macOS and Windows.

7Platform-specific exceptions are noted below.

8 

6---9---

7 10 

8## Multitask across projects11## Multitask across projects

247 250 

248You can ask in natural language or explicitly invoke the image generation skill by including `$imagegen` in your prompt.251You can ask in natural language or explicitly invoke the image generation skill by including `$imagegen` in your prompt.

249 252 

250Built-in image generation uses `gpt-image-1.5`, counts toward your general Codex usage limits, and uses included limits 3-5x faster on average than similar turns without image generation, depending on image quality and size. For details, see [Pricing](https://developers.openai.com/codex/pricing#image-generation-usage-limits). For prompting tips and model details, see the [image generation guide](https://developers.openai.com/api/docs/guides/image-generation).253Built-in image generation uses `gpt-image-2`, counts toward your general Codex usage limits, and uses included limits 3-5x faster on average than similar turns without image generation, depending on image quality and size. For details, see [Pricing](https://developers.openai.com/codex/pricing#image-generation-usage-limits). For prompting tips and model details, see the [image generation guide](https://developers.openai.com/api/docs/guides/image-generation).

251 254 

252For larger batches of image generation, set `OPENAI_API_KEY` in your environment variables and ask Codex to generate images through the API so API pricing applies instead.255For larger batches of image generation, set `OPENAI_API_KEY` in your environment variables and ask Codex to generate images through the API so API pricing applies instead.

253 256