Codex vs OpenCode
Direct comparison of Codex (from OpenAI) and OpenCode (from OpenCode). Want a 3- or 4-way comparison? Open the multi-agent tool →
| Codex OpenAI | OpenCode OpenCode | |
|---|---|---|
| Overview | ||
| Vendor | OpenAI | OpenCode |
| Category | coding | coding |
| Release date | — | — |
| Source | proprietary | open source |
| License | — | MIT |
| Pricing | Included with ChatGPT Plus/Pro | Free OSS · BYO API key |
| Base models | ||
| Capabilities | terminalfile_ioshell_execcloud_runtime | terminalfile_ioshell_exec |
| Capability | ||
| gpt.buzz Index | 70.0 | 21.9 |
| SWE-bench Verified | 85.0% | 62.0% |
| SWE-bench Pro | 56.8% | — |
| Terminal-Bench 2.0 | 77.3% | — |
| GAIA | — | — |
| WebArena | — | — |
| Adoption | ||
| OpenRouter · daily | — | — |
| OpenRouter · cumulative | — | — |
| GitHub stars | — | — |
| Links | ||
| Links | ||
More on each
Full agent profiles — Codex / OpenCode
Or browse the full agent directory / composite leaderboard.