OpenAI's open-source coding agent — CLI plus cloud tasks and IDE integration, driven by GPT-5-class and Codex models.
Vendor
OpenAI
Type
CLI
Interfaces
cli, ide, web
Pricing
ChatGPT subscription or API usage
| Feature | Codex |
|---|---|
| Autonomy | |
| Autonomy Level | Agentic (supervised) |
| Capabilities | |
| Terminal Execution | |
| Direct File Editing | |
| Multi-file Edits | |
| Web Browsing | |
| Subagents / Parallel | |
| Background Tasks | |
| Git / PR Integration | |
| Context / Memory Mgmt | |
| Extensibility | |
| MCP Support | |
| Lifecycle Hooks | |
| Custom Commands | |
| Plugins / Extensions | |
| Execution | |
| Sandboxed Execution | |
| Model access | |
| Bring-your-own API Key | |
| Multi-model Support |
| Model |
|---|
| GPT-5 Codex (high)DefaultOpenAI |
| GPT-5 (high)OpenAI |
| GPT-5 mini (high)OpenAI |
Agentic benchmark scores are sourced from each model's record in the model database.