From the experiment

Do coding agents recommend Anthropic Claude?

Anthropic Claude was chosen in 19% of 801 judged document processing sessions, ranking second.

Published September 28, 2026 Updated September 29, 2026 Read as Markdown

Anthropic Claude was chosen in 19% of 801 judged document processing sessions, ranking second. It was also raised as a candidate in 169 further sessions without being chosen.

This page reports what happened when Claude Code, Codex, Cursor, Grok Build CLI and Muse Code had to solve a problem in document processing inside a realistic codebase. Not what a chat assistant says about Anthropic Claude. What an agent actually installed.

The numbers

CategoryDocument processing
Sessions in the category801
Sessions where Anthropic Claude was chosen150
Install share19%
Rank in category2 of 42
Codebases it won in11
Raised as a candidate, not chosen169
Chosen when considered47%
Siteanthropic.com

By agent

The agents treat Anthropic Claude very differently. Claude Code chose it in 62% of its sessions in this category and Codex in 0%, a spread of 62 points.

AgentSessionsChose Anthropic ClaudeShare
Claude Code18011262%
Codex23500%
Cursor180179%
Grok Build CLI3013%
Muse Code1762011%

A single blended install share would report the midpoint and hide both ends. If most of your users run Codex, your real position here is 0%, not 19%.

By who was asking

Anthropic Claude does much better with one kind of buyer than another. It won 26% of sessions asked as junior developer and 4% of those asked as enterprise team.

Who is askingSessionsChose Anthropic ClaudeShare
Vibe coder681624%
Junior developer3278426%
Senior engineer2704517%
Enterprise team13654%

What Anthropic Claude was up against

The full ranking in document processing, from the same sessions:

#ProductRuns wonShare
1Azure AI Document Intelligence19324%
2Anthropic Claude (this page)15019%
3Amazon Textract10313%
4Google Cloud Document AI496%
5OpenAI models466%
6Google Gemini456%
7Docling243%
8Apache PDFBox233%

What this means

A solid second or third position in a category means the agent is genuinely choosing rather than reaching automatically. That is a winnable position, because the inputs it uses can be changed.

The fastest gains are usually in the sessions that were nearly won: read them, find the step where the agent moved on, and fix that step.

Where these numbers come from

The 801 sessions in document processing are part of a published set of 15,051, run with real coding agents inside realistic codebases and judged blind. The full method is on one page: how we measured this.

Every document processing run can be replayed on the board.

If you work on Anthropic Claude: the judge recorded a reason for every session where it was raised and passed over. Those reasons are in the transcripts.

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Common questions

Do coding agents recommend Anthropic Claude?

Yes. Anthropic Claude was chosen in 150 of the 801 judged sessions in document processing, a 19% install share, ranking second in its category.

Does Claude Code recommend Anthropic Claude?

In 112 of the 180 sessions in document processing run with Claude Code, which is 62%.

Do different coding agents treat Anthropic Claude differently?

Yes, and by a wide margin. Claude Code chose it in 62% of its runs and Codex in 0%.

How was this measured?

Real coding agents at pinned versions were run in sandboxes inside 92 realistic codebases and asked to solve real tasks. A simulated project owner approved or questioned each recommendation before any code was written, and a judge from a model family that builds none of the agents read every session blind.

How often is Anthropic Claude considered but not chosen?

It was raised as a candidate in 169 sessions without being chosen, and chosen in 150. That is a 47% conversion from considered to chosen.

Where this comes from

Armature ran 15,051 judged sessions with Claude Code, Codex, Cursor, Grok Build CLI and Muse Code inside 92 realistic codebases, and published every run. The numbers on this page come from that work.

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