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AI coding agent usage

What was the most used AI coding agent on ?

Claude Code from Anthropic, with a usage score of 42 out of 100 across 2 of 3 sources. Cline was next at 38.

Usage score over time, week by week

Usage ranking

AI coding agents by usage on June 1, 2025

This ranks how much each agent is used and followed, not how good it is: a popular agent can be a worse fit for your work than a small one. Click an agent to see where its numbers come from. Each source's column shows the agent's scaled score (the leader is 100) over the raw number. 3 sources had data on this day. The score averages an agent's scaled values over the sources that can measure it (at least three).

  1. 1
    Claude Code
    Anthropic · closed source
    Usage score 42
    • npm 100 · 368k
    • GitHub 25 · 11k
    • npm: 100367,622 downloads of @anthropic-ai/claude-code in the 7 days to Jun 1, 2025. That's the most of any agent in this source, so it scores 100. Source
    • GitHub: 2511,018 stars on github.com/anthropics/claude-code on Jun 2, 2025. The leader here is Cline with 45k, so Claude Code scores 11k ÷ 45k × 100 = 25. Source

    Not counted: VS Code, because there's no snapshot of its extension page from around that day.

    Usage score: (100 + 25) ÷ 3 = 42, divided by 3 rather than 2 because every agent's average counts at least 3 sources. Claude Code website

  2. 2
    Cline
    Cline · open source
    Usage score 38
    • npm 10 · 35k
    • GitHub 100 · 45k
    • VS Code 4 · 1.4M
    • npm: 1034,970 downloads of cline in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so Cline scores 35k ÷ 368k × 100 = 10. Source
    • GitHub: 10044,909 stars on github.com/cline/cline on Jun 1, 2025. That's the most of any agent in this source, so it scores 100. Source
    • VS Code: 41,392,188 installs of the saoudrizwan.claude-dev extension on May 4, 2025. The leader here is GitHub Copilot with 31M, so Cline scores 1.4M ÷ 31M × 100 = 4. Source

    Usage score: (10 + 100 + 4) ÷ 3 = 38. Cline website

  3. 3
    GitHub Copilot
    GitHub · closed source
    Usage score 33
    • npm 0 · 0
    • VS Code 100 · 31M
    • npm: 00 downloads of @github/copilot in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so GitHub Copilot scores 0 ÷ 368k × 100 = 0. Source
    • VS Code: 10031,032,083 installs of the GitHub.copilot-chat extension on May 10, 2025. That's the most of any agent in this source, so it scores 100. Source

    Not counted: GitHub, because it has no public GitHub repo.

    Usage score: (0 + 100) ÷ 3 = 33, divided by 3 rather than 2 because every agent's average counts at least 3 sources. GitHub Copilot website

  4. 4
    Codex CLI
    OpenAI · open source
    Usage score 18
    • npm 8 · 28k
    • GitHub 47 · 21k
    • VS Code 1 · 253k
    • npm: 828,344 downloads of @openai/codex in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so Codex CLI scores 28k ÷ 368k × 100 = 8. Source
    • GitHub: 4721,041 stars on github.com/openai/codex on May 1, 2025. The leader here is Cline with 45k, so Codex CLI scores 21k ÷ 45k × 100 = 47. Source
    • VS Code: 1253,463 installs of the openai.chatgpt extension on May 4, 2025. The leader here is GitHub Copilot with 31M, so Codex CLI scores 253k ÷ 31M × 100 = 1. Source

    Usage score: (8 + 47 + 1) ÷ 3 = 18. Codex CLI website

  5. 5
    Roo Code
    Roo Code · open source
    Usage score 11
    • GitHub 31 · 14k
    • VS Code 1 · 452k
    • GitHub: 3114,138 stars on github.com/RooCodeInc/Roo-Code on May 22, 2025. The leader here is Cline with 45k, so Roo Code scores 14k ÷ 45k × 100 = 31. Source
    • VS Code: 1451,742 installs of the RooVeterinaryInc.roo-cline extension on May 7, 2025. The leader here is GitHub Copilot with 31M, so Roo Code scores 452k ÷ 31M × 100 = 1. Source

    Not counted: npm, because it has no command-line package on npm.

    Usage score: (31 + 1) ÷ 3 = 11, divided by 3 rather than 2 because every agent's average counts at least 3 sources. Roo Code website

  6. 6
    Amp
    Sourcegraph · closed source
    Usage score 0
    • npm 1 · 4.9k
    • VS Code 0 · 311
    • npm: 14,878 downloads of @sourcegraph/amp in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so Amp scores 4.9k ÷ 368k × 100 = 1. Source
    • VS Code: 0311 installs of the sourcegraph.amp extension on May 1, 2025. The leader here is GitHub Copilot with 31M, so Amp scores 311 ÷ 31M × 100 = 0. Source

    Not counted: GitHub, because it has no public GitHub repo.

    Usage score: (1 + 0) ÷ 3 = 0, divided by 3 rather than 2 because every agent's average counts at least 3 sources. Amp website

  7. 7
    Auggie
    Augment Code · closed source
    Usage score 0
    • npm 0 · 0
    • VS Code 1 · 205k
    • npm: 00 downloads of @augmentcode/auggie in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so Auggie scores 0 ÷ 368k × 100 = 0. Source
    • VS Code: 1205,484 installs of the augment.vscode-augment extension on Jun 2, 2025. The leader here is GitHub Copilot with 31M, so Auggie scores 205k ÷ 31M × 100 = 1. Source

    Not counted: GitHub, because it has no public GitHub repo.

    Usage score: (0 + 1) ÷ 3 = 0, divided by 3 rather than 2 because every agent's average counts at least 3 sources. Auggie website

  8. 8
    Kilo Code
    Kilo · open source
    Usage score 0
    • npm 0 · 0
    • GitHub 1 · 257
    • VS Code 0 · 2.1k
    • npm: 00 downloads of @kilocode/cli in the 7 days to Jun 1, 2025. The leader here is Claude Code with 368k, so Kilo Code scores 0 ÷ 368k × 100 = 0. Source
    • GitHub: 1257 stars on github.com/Kilo-Org/kilocode on May 11, 2025. The leader here is Cline with 45k, so Kilo Code scores 257 ÷ 45k × 100 = 1. Source
    • VS Code: 02,110 installs of the kilocode.Kilo-Code extension on May 6, 2025. The leader here is GitHub Copilot with 31M, so Kilo Code scores 2.1k ÷ 31M × 100 = 0. Source

    Usage score: (0 + 1 + 0) ÷ 3 = 0. Kilo Code website

Not ranked that day, only one source has them: Aider (GitHub, 32k), OpenCode (npm, 1.3k).

Method

How the usage score is made

No single public number measures how much each AI coding agent is used, so we blend the ones that exist. In each source the leader scores 100 and the rest are scaled to it. An agent's score is the average over the sources that can measure it. Sources that can't see an agent at all (Cursor has no npm package) are left out of its average, but the average always counts at least three sources, so an agent seen by only one or two can't outrank one that leads everywhere. An agent needs two sources to be ranked.

  • npmCLI downloads, 7 days · data from Jun 1, 2025

    Downloads of each agent's command-line package in the 7 days to the date, with one-off bursts (mirrors, bots) capped. Downloads count installs and CI runs, not people, and agents with their own installer are undercounted. Source

  • GitHubStars · data from Jun 2, 2025

    Stars on the agent's GitHub repo, from monthly snapshots. Stars measure interest, and build up over time. Source

  • VS CodeExtension installs, all time · data from Jun 2, 2025

    All-time installs of the agent's VS Code extension, from monthly snapshots. Cursor and Windsurf install from Open VSX instead, which isn't counted. Source

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The most used AI coding agent, month by month

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Data through October 21, 2026 for 20 agents. npm downloads from the npm registry; OpenRouter app rankings from OpenRouter (CC BY 4.0); GitHub stars and VS Code installs from monthly snapshots in the Internet Archive and the live APIs; survey figures as published by Stack Overflow and JetBrains.