app/features.md Codex Docs, 2026-04-18 18:18 UTC → 2026-04-24 18:20 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.

7The sections below note platform-specific exceptions.

8 

6---9---

7 10 

8## Multitask across projects11## Multitask across projects

143Use browser comments to mark specific elements or areas on a page, then ask146Use browser comments to mark specific elements or areas on a page, then ask

144Codex to address that feedback.147Codex to address that feedback.

145 148 

149When you want Codex to operate the page directly, use

150[browser use](https://developers.openai.com/codex/app/browser#browser-use) for local development servers and

151file-backed pages. You can manage the Browser plugin, allowed websites, and

152blocked websites from settings.

153 

146![Codex app showing a browser comment on a local web app preview](/images/codex/app/in-app-browser-light.webp)154![Codex app showing a browser comment on a local web app preview](/images/codex/app/in-app-browser-light.webp)

147 155 

148## Computer use156## Computer use

222opening separate projects or using worktrees rather than asking Codex to roam230opening separate projects or using worktrees rather than asking Codex to roam

223outside the project root.231outside the project root.

224 232 

233If [automatic review](https://developers.openai.com/codex/agent-approvals-security#automatic-approval-reviews)

234is available in your workspace, you can choose it from the permissions selector.

235It keeps the same sandbox boundary but routes eligible approval requests through

236the configured review policy instead of waiting for you.

237 

225For a high-level overview, see [sandboxing](https://developers.openai.com/codex/concepts/sandboxing). For238For a high-level overview, see [sandboxing](https://developers.openai.com/codex/concepts/sandboxing). For

226configuration details, see the239configuration details, see the

227[agent approvals & security documentation](https://developers.openai.com/codex/agent-approvals-security).240[agent approvals & security documentation](https://developers.openai.com/codex/agent-approvals-security).

247 260 

248You can ask in natural language or explicitly invoke the image generation skill by including `$imagegen` in your prompt.261You can ask in natural language or explicitly invoke the image generation skill by including `$imagegen` in your prompt.

249 262 

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).263Built-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).

251 264 

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.265For 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.

253 266