- Dataset
- 2026-09-18-v3.0
- Ruleset
- b2e8889c66f7
- Scanned
- 2026-09-16
- Window
- February–September 15, 2026
01Result
OpenBMB/ChatDev ↗OpenBMB/ChatDev AI coding statistics: 3%
One person is driving this. The headline number reflects a single contributor's workflow, not a project-wide shift.
02Drivers
What shapes this result
Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.
Assisted or autonomous
Assisted — a developer’s identity authored the commit and the agent added itself as co-author. Autonomous — a bot identity authored the commit without a human identity attached. Across the whole index, 96% of agent commits are assisted.
Agent share by month
| Month | Agent share | Considered commits |
|---|---|---|
| 2026-02 | 0% | 39 |
| 2026-03 | 0% | 38 |
| 2026-04 | 0% | 15 |
| 2026-05 | 33.3% | 6 |
| 2026-06 | 50% | 2 |
| 2026-07 | 0% | 1 |
Peak month: 50%. Bars are scaled to that peak, not to 100%.
Which agents
| Agent | Vendor | Commits | Share |
|---|---|---|---|
| Claude Code | Anthropic | 2 | 2% |
| GitHub Copilot | GitHub | 1 | 1% |
03Evidence
Inspect the matches
Public commit samples let you inspect the signatures behind the aggregate result.
Matched commit samples
0014dbbaon GitHubfix: sanitize upload filename to prevent path traversal (#638)Claude Code958dc05bon GitHubfix: replace atexit with BackgroundTask for temp zip cleanupClaude Code5789d78con GitHubfix: strip <think> tokens from reasoning model outputGitHub Copilot
04Method
What entered the denominator
The result begins with commit history, removes merges and routine automation, and reports literal agent signatures as a lower bound.
Exclusion ledger
| Commits in window | 154 |
| Merge commits removed | −53 |
| CI / dependency bots removed | −0 |
| Considered | 101 |
Bots are excluded from the denominator entirely. Agent attribution requires a literal supported signature; no code-style inference is used.
05Provenance
Pinned to a source state
This observation names the repository state, release, and detector that produced it. Use these identifiers when reproducing or citing the result.
- Dataset release
- 2026-09-18-v3.0
- Scan date
- 2026-09-16
- Ruleset
- sha256:b2e8889c66f72c18a61839f0bf1a9f77b5481ba2def044dba33c797b2f2bdcae
- Canonical repository
- OpenBMB/ChatDev
- Default branch
- main
- Resolved HEAD
- 4fb2db0ea90375ce1059f44fe03ffbd191a7a169 ↗
- Resolved
- 2026-09-16
- Measurement window
- February–September 15, 2026
06Peer context
Position among comparable repositories
The cohort uses the same release and measurement window, then narrows to the repository’s ecosystem and removes low-activity observations.
Midrank percentile; equal shares split the tied positions.
- Repository
- 3%
- Cohort median
- 6.3%
- Share rank
- 161 / 247
Percentile = (repositories below + half of 3 tied repositories) ÷ 247.
Continue exploring
Related coding-agent evidence
Run the same detector locally.
Deterministic signature matching; no code-style inference. Squash merges can remove trailers, so this result remains a measured floor.
npx qmmit-cli OpenBMB/ChatDev