facebook/pyrefly vs openai/codex
Both showing Healthy signals — pick on fit, not health
As of September 2026, pyrefly and codex both show healthy maintenance signals. pyrefly last saw a commit 4 months ago with 25+ active contributors, while codex was committed to today with 33+ active contributors. pyrefly is MIT-licensed while codex is Apache-2.0-licensed. Neither has known critical or high-severity CVEs in its dependency tree.
Informational only. RepoPilot summarises public signals at the time of analysis. Not professional, security, or legal advice.
facebook/pyrefly
Strong maintenance signals
dependency CVE scan unavailable
No blocking repository signals were found — inspect the evidence before forking.
Documented and popular — useful reference codebase to read through.
dependency CVE scan unavailable
- ✓Last commit today
- ✓25+ active contributors
- ✓Distributed ownership (top contributor 32% of recent commits)
- ✓MIT licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests
openai/codex
Healthy across all four use cases
No blocking maintenance, license, or known-CVE signals were found; still verify the package version and fit.
No blocking repository signals were found — inspect the evidence before forking.
Documented and popular — useful reference codebase to read through.
No blocking repository-level signals were found; deployment review is still required.
- ✓Last commit today
- ✓33+ active contributors
- ✓Distributed ownership (top contributor 30% of recent commits)
- ✓Apache-2.0 licensed
- ✓CI configured
- ✓Tests present
Computed from maintenance signals — commit recency, contributor breadth, bus factor, license, CI, tests, cross-checked against dependency CVEs from deps.dev and OpenSSF Scorecard
Signal-by-signal breakdown
| pyrefly | codex | |
|---|---|---|
| Stars | 5,679 | 124,784 |
| Last commit | 4mo ago | today |
| License | MIT | Apache-2.0 |
| Open issues | 526 | 17,484 |
| Has tests | ✓ | ✓ |
| Has CI | ✓ | ✓ |
| Test coverage | 5% | 22% |
| Dependency CVEs | No CVEs | No CVEs |
| Architecture grade | — | A |
| Cycles | — | 0 |
| Bottom-line | Healthy signals | Healthy signals |
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