---
format: "aidr-story-markdown/v1"
id: "6379e22bcefbb3cdb0a5ea62e5d0db6657fadacdf2e08961c2f7357d973dd769"
canonical_url: "https://aidr.today/6379e22b?lang=en"
title: "Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out"
lang: "en"
requested_lang: "en"
available_langs: ["en","vi"]
translation_fallback: null
fallback_fields: []
published_at: "2026-09-03T21:20:34.000Z"
category: "Research"
topics: ["anthropic","claude","cursor","coding","agent"]
source_urls: ["https://armature.tech/blog/which-tools-coding-agents-install","https://news.ycombinator.com/item?id=49557206"]
summary: "We watched almost 17k sessions across different types of personas, with 1,163 prompt variations, 75 repositories and 3 coding agents (Claude Code, Codex, Cursor) actually implementing the solutions instead of just recommending one."
---

# Which tools do Claude, Codex and Cursor choose? We measured 17k runs to find out

> [Open the canonical story](<https://aidr.today/6379e22b?lang=en>)

**Published:** 2026-09-03T21:20:34.000Z
**Category:** Research
**Topics:** anthropic, claude, cursor, coding, agent

## Summary

We watched almost 17k sessions across different types of personas, with 1,163 prompt variations, 75 repositories and 3 coding agents \(Claude Code, Codex, Cursor\) actually implementing the solutions instead of just recommending one\.

## Sources

- [Story source](<https://armature.tech/blog/which-tools-coding-agents-install>)
- [Discussion](<https://news.ycombinator.com/item?id=49557206>)