Harness detail
OpenCode
MIT terminal coding CLI. Scriptable path is `opencode run --format json`. Distant third on X behind Codex and Claude Code.
Preview operational data. Rows carry origin seed, mock-eval, or runner. Mock-eval and frontend-eval runner rows are not public Index ranks.
- Version
- 1.18.18Preview
- Source
- externalPreview
- Status
- catalog-onlyPreview
- Origin mix
- No runsPreview
Source: https://github.com/sst/opencode
Catalog notes: Identity only. GitHub release v1.18.18 observed 2026-08-13. Capabilities: tools, headless, sessions.
| Run | Task | Origin | State | Score | Duration |
|---|---|---|---|---|---|
| Catalog-only harness. No preview runs until an adapter scores a frozen suite. | |||||