Pulse
2026-09-18-v3.0
Dataset
2026-09-18-v3.0
Ruleset
b2e8889c66f7
Scanned
2026-09-16
Window
February–September 15, 2026
Local to this browser

01Result

rust-lang/rust ↗

rust-lang/rust AI coding statistics: 0.1%

of 14,113 commits in February–September 15, 2026 were committed by an AI agent — a floor, not an estimate
0.1% agent · top contributor 33.3%7 contributors
team

A small group is using agents. Adoption has spread beyond one person but is not project-wide.

9
agent commits
14,104
other considered commits
7
agent contributors
33.3%
largest contributor

02Drivers

What shapes this result

Mode, timing, and detected signatures show whether the result reflects broad adoption or one concentrated workflow.

Assisted or autonomous

9assisted
0autonomous

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

Agent-attributed commit share by month
MonthAgent shareConsidered commits
2026-010%4
2026-020%1663
2026-030.1%1604
2026-040%1933
2026-050.1%1717
2026-060.2%1771
2026-070%2406
2026-080%2292
2026-090.1%723

Peak month: 0.2%. Bars are scaled to that peak, not to 100%.

Which agents

AgentVendorCommitsShare
Claude CodeAnthropic70%
Other / generic agentVarious10%
GitHub CopilotGitHub10%

03Evidence

Inspect the matches

Public commit samples let you inspect the signatures behind the aggregate result.

Matched commit samples

  • 0b305924 on GitHubFollow symlinks when discovering prebuilt rustc proc-macro dylibsClaude Code
  • 80db8195 on GitHubinternal: add `Module::path_segments`, dedup the path-to-root name walkClaude Code
  • 2ff723e9 on GitHubinternal: Use itertools's `collect_array` in `replace_if_let_with_match`Claude Code
  • 9846cb6f on GitHubMake `char::is_default_ignorable` unstably publicOther / generic agent
  • d560d3a4 on GitHubAdd test for async Send inference with PhantomData<*mut ()> + unsafe impl GitHub 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 window22,479
Merge commits removed−8,342
CI / dependency bots removed−24
Considered14,113

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
rust-lang/rust
Default branch
main
Resolved HEAD
28e8a8c81bf3b37909edac6c2a76e56f30cd492f ↗
Resolved
2026-09-16
Measurement window
February–September 15, 2026
Download observation JSONDeterministic export · same values as this page

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.

CohortRust · 117 eligible repositories · at least 100 considered commits2026-09-18-v3.0 · February–September 15, 2026 · 33 of 150 ecosystem repositories excluded
Agent-commit share position19th percentile

Midrank percentile; equal shares split the tied positions.

Repository
0.1%
Cohort median
2%
Share rank
94 / 117
0th50th100th

Percentile = (repositories below + half of 3 tied repositories) ÷ 117.

Continue exploring

Claude Code commitsBrowse repositories with detected Claude Code signatures →GitHub Copilot commitsBrowse repositories with detected GitHub Copilot signatures →GitHub AI commit analyzerInspect another repository with the same evidence model →
Reproduce this observation

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 rust-lang/rust

Scan another repository

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