A week using Claude Code, Codex, and Gemini CLI showed the same repo-breaking patterns
AIcademy-academy · reddit · 2026-07-25
A week-long side-by-side test of Claude Code, Codex, and Gemini CLI on the same real repository.
- Claude Code held multi-step context best, but became expensive when sessions drifted.
- Codex was the most literal and reliable for well-specified tasks, but struggled with ambiguity.
- Gemini CLI handled the largest context windows and the free tier made it easy to experiment, but results were less consistent.
The poster’s main takeaway is that process matters more than tool choice: keep a context file, break work into small scoped steps, and ask for a plan before edits.
More from coding & agent
- drskill adds trace-based auditing for agent loadouts, skills, and MCP triggers — dbreunig · 2026-07-25
- Claude and ChatGPT both use the same MCP connection model, just with different labels — philrox_ · 2026-07-25
- How to design production-grade agent systems for RAG, voice bots, and low latency — babySasuk3 · 2026-07-25
- A GitHub repo gathers 100+ free open-source AI agents and RAG apps, with 127K stars — Saboo_Shubham_ · 2026-07-25
- A new tool ties Claude, Cursor, and Copilot spend to shipped code — entelligenceai17 · 2026-07-25
- Teams strip 80% of Claude Code’s system prompt in a new context-engineering guide — EricBuess · 2026-07-25