Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.
Assisted or autonomous
Assisted — a developer’s identity authored the commit and the agent added itself as co-author. The agent ran git commit during a working session, with a person there. Autonomous — a bot identity is the author, no human in the loop. Across the whole index, 93.7% of agent commits are assisted.
Agent share by month
Peak month: 35.4%. Bars are scaled to that peak, not to 100%.
Which agents
| Devin | Cognition | 1377 | 10.3% |
| Claude Code | Anthropic | 1260 | 9.4% |
| Cursor Agent | Anysphere | 499 | 3.7% |
| GitHub Copilot | GitHub | 26 | 0.2% |
| OpenAI Codex | OpenAI | 22 | 0.2% |
| Other / generic agent | Various | 5 | 0% |
Verify it yourself
Sample commits that matched. Every one links to GitHub — check the trailers.
65f9d9bbtest(proxy): use the module-level HTTPException import in the /nvidia_nim Devinc9dd4b44revert(model_info): keep Gemini baseline majors single-digitDevin945adfb6refactor(model_info): support multi-digit Gemini majorsDevin501be314fix(proxy): enforce organization budgets when max_budget is 0Claude Codeeddfb5fbfix(responses): preserve hosted web search calls (#40828)Claude Code55c5babbdocs(pr-template): fold assumptions guidance into Caveats instructionsClaude Codef4e21430test(auth): freeze prefetch cache clock so the org getter cannot miss on aCursor Agent75b16df6fix(auth): keep prefetched org entries on the 5s getter TTLCursor Agentabaa2f8bfix(auth): put TQ008 suppressions on the patch call linesCursor Agent5677bc23fix(proxy/batches): resolve managed unified input_file_id to storage_url wGitHub Copilot0a17c7c3feat: add LiteLLM Rust workspace with Mistral OCR bridge (#31033)GitHub Copilot1ccc1e5bchore: litellm oss staging160626 (#30527)GitHub Copilotcc400502fix(mcp): canonicalize bearer scheme on bridge egressOpenAI Codex1a2a24ecchore(mcp): document mutable bridge header shapeOpenAI Codexda036ad0fix(mcp): harden DCR bridge admissionOpenAI Codexb84f7f82Litellm oss staging (#29492)Other / generic agente8fcb012Litellm OSS Staging (#29161)Other / generic agent58cd6f68test: fix misleading precedence test per review feedbackOther / generic agent
What was excluded
| Commits in window | 18,090 |
| Merge commits removed | −4,704 |
| CI / dependency bots removed | −26 |
| Considered | 13,360 |
Bots are excluded from the denominator entirely. Counting dependabot as “AI-written code” is the fastest way to produce a meaningless number.
How this was measured
Measured over February–August 2026, cloned directly. Detection is deterministic string matching against signatures agents write about themselves — no heuristics, no style analysis. Merge commits and CI bots are excluded from the denominator. The figure is a floor: squash merges strip trailers, so real usage is higher. Contributor counts are aggregate — no individual is named.
Run it yourself: npx qmmit-cli BerriAI/litellm