Amp vs OpenAI Codex
Amp
ampcode.comOpenAI Codex
openai.comSide by side
| Figure | Amp | OpenAI Codex |
|---|---|---|
| Price from | $20/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| API | Yes | — |
| Plans published | 6 | 6 |
| Spec score · AI Coding Assistants | 9.1 (#12) | 8.6 (#31) |
| Coding agent | Yes | Yes |
| Chat assistance | Yes | Yes |
| Codebase indexing | Yes | Yes |
| Free plan | Yes | No |
| Security | Amp states that it is SOC 2 Type II certified and conducts annual penetration testing across its clients, backend, and infrastructure. | OpenAI says infrastructure for its products uses encryption in transit and at rest, change management, and strict access controls. |
| Support | For general help, Amp directs users to @AmpCode on X or [email protected], and says billing and account help is available by email. | OpenAI links users to its Help Center and service status page for support resources. |
| Supported IDEs | VS Code,Cursor,Windsurf,Zed,Neovim; deprecated JetBrains integration | Visual Studio Code; Cursor; Windsurf; Visual Studio Code Insiders; Xcode; JetBrains IDEs |
| Terminal access | Yes | Yes |
Plans
Amp
- Megawatt$20 a month
- GigawattPrice not published
- HobbyFree
- TeamsFree
- Individual (Megawatt/Gigawatt)$20 a month
- EnterprisePriced on request
OpenAI Codex
- Business StandardPrice not published
- Business PremiumPrice not published
- EnterprisePrice not published
- Business$20 a month
- Plus$20 a month
- Pro$100 a month
In their own words
Amp
Amp is a coding agent and development environment for work across local machines, cloud orbs, and connected runners. An orb is a cloud machine created for a thread, where the agent can use a project, tools, and plugins. Amp offers chat assistance, codebase indexing, and terminal access, and uses different models for different tasks, including GPT-5.6 and Claude Fable 5.1. Its CLI connects to VS Code, Cursor, Windsurf, Zed, and Neovim; the JetBrains integration is deprecated. Threads can be saved and shared, with workspace threads shared with the team by default. GitHub integration can clone private repositories, push branches, open pull requests, and read CI status subject to the connected account’s access. Amp supports local and remote MCP servers. In Slack, users can send requests to a personal Puck by mentioning @Amp. Amp lists a free Hobby plan for public and private repositories and a Megawatt plan at $20 a month, including 45,000 minutes of orb time and unlimited public and private repositories. Amp says it does not offer self-hosted deployment, though users can bring their own model-provider API keys.
OpenAI Codex
OpenAI Codex has no write-up on Specifiction yet; its figures are above.