I often copy and paste the same prompts into Claude, Codex & Gemini separately. It's helpful seeing where they all agreed and where they diverged. The signal of the agreement or divergence was often more helpful than any individual response.
So, I built a tiny open source CLI that does this automatically.
Council detects any `claude`, `codex` or `gemini` on your path and runs them in parallel. Once all finish, a lead summarizer produces one synthesized answer, flagging any disagreements.
Open source & MIT licensed: https://github.com/seeARMS/council
Show HN: Council – Run Claude, Codex and Gemini against the same prompt
council.armstr.ng