Codex vs OpenCode: Side-by-Side Comparison 2026
Codex vs OpenCode comparison for 2026. Features, pricing, AI capabilities, and editor support analyzed side by side to help you choose the right coding tool for your workflow.
Codex is an AI agent and a CLI-based coding agent from OpenAI — asynchronous autonomous coding agent. OpenCode is a CLI-based coding agent from SST — open-source terminal ai coding agent.
Codex🏆 Approved
OpenAI's autonomous coding agent. Available via web, desktop app (macOS), CLI (macOS/Linux/Windows), and VS Code extension.
- ✓ Code completions
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
Free / $8/mo · 6 plans
OpenCode
Open-source terminal AI coding agent from SST. Free with BYOK, or use Go ($10/mo for curated open-source models), Zen (pay-per-token), or Black (flat-rate subscription at $20/$100/$200/mo, currently paused) for managed model access.
- ✓ AI chat
- ✓ Agentic mode
- ✓ Multi-file editing
- ✓ Terminal commands
- ✓ Test generation
Free / $10/mo · 4 plans
| Feature | Codex | OpenCode |
|---|---|---|
| Category | Agent / CLI | CLI |
| Starting Price | Free | Free |
| Model Family | GPT / Codex | Multi-model (any) |
| Documentation | ✓ | — |
| Git Integration | ✓ | — |
| Open Source | Yes (CLI) | Yes (MIT) |
Pricing verified May 4, 2026. Codex pricing | OpenCode pricing
Key Differences
- Category: Codex is an AI agent and a CLI-based coding agent; OpenCode is a CLI-based coding agent.
- Starting price: Codex starts at $8/mo; OpenCode starts at $10/mo.
- Model family: Codex uses GPT / Codex; OpenCode uses Multi-model (any).
- Open source: Codex: Yes (CLI). OpenCode: Yes (MIT).
- Platforms: Codex runs on Linux, Web, Windows (experimental), macOS; OpenCode runs on Linux, Windows, macOS.
- Provider: Codex is built by OpenAI; OpenCode is built by SST.
Which Should You Choose?
Choose Codex if you want asynchronous coding tasks you can fire off and review when ready. Choose OpenCode if you want open-source terminal-based coding with model flexibility. Read our full reviews to see which fits your workflow.