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zed-industries/zed ↗
1.8%
of 5,094 commits were committed by an AI agent — a floor, not an estimate
1.8% agent · top contributor 6.6%53 contributors
org-wide

Adoption is broad. Many contributors are committing agent-authored work, which is what a real organisational rollout looks like.

91
agent commits
5,003
human commits
53
agent contributors
6.6%
largest contributor

Assisted or autonomous

91assisted
0autonomous

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

Feb26
Mar26
Apr26
May26
Jun26
Jul26
Aug26
Sep26

Peak month: 3%. Bars are scaled to that peak, not to 100%.

Which agents

Claude CodeAnthropic831.6%
GitHub CopilotGitHub70.1%
Cursor AgentAnysphere10%

Verify it yourself

Sample commits that matched. Every one links to GitHub — check the trailers.

  • 9a76a39dproject: Underline diagnostics reported past the end of a line (#63125)Claude Code
  • 12ef40c3lsp: Add client support for LSP 3.18 markdown diagnostic messages (#61030)Claude Code
  • c3b365d2agent_ui: Fix inline assistant when reasoning precedes tool use (#61220)Claude Code
  • 02aabb9cproject_panel: Add expand/collapse all to context menu (#59567)GitHub Copilot
  • 3afcafe3agent: Return clear error when read_file tool path is a directory (#54303)GitHub Copilot
  • 8420716banthropic: Preserve custom model thinking mode after thinking-toggle refacGitHub Copilot
  • ec312b27Add LSP call hierarchy modal (#53239)Cursor Agent

What was excluded

Commits in window5,132
Merge commits removed−0
CI / dependency bots removed−38
Considered5,094

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 zed-industries/zed

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