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Concilium runs Claude, OpenAI Codex, and OpenCode in parallel on every coding prompt. The responses are then anonymously peer-reviewed by juror models and synthesized into a single, validated answer. Open source, local-first, MIT licensed. CLI and desktop app.

ConciliumStop comparing AI outputs. Let them review each other.
Matias Daloialeft a comment
Hey everyone β I'm MatΓas, the maker behind Concilium. I built this because I got tired of my own workflow. Every time I had a non-trivial coding task, I'd paste the same prompt into Claude Code, Codex, and OpenCode, then spend 20 minutes switching between terminals trying to figure out which response was actually best. Sometimes Claude nailed the architecture but missed edge cases. Sometimes...

ConciliumStop comparing AI outputs. Let them review each other.
