Codex is fully open source and can run on any open-weights model
reach_vb · x · 2026-07-26
A reminder that Codex is a fully open-source harness.
That means you can audit exactly what happens to your prompt and how Codex works internally. If you want, you can also run it with any open-weights model.
More from coding & agent
- Pufferlib 5 teases 400KB agent training, with some models fitting 400KB VRAM — jsuarez · 2026-07-26
- Claude Opus 5 powers a rhythm racer that turns any song into a racetrack — repligate · 2026-07-26
- Codex’s copy session ID feature makes cross-session context reuse easier — kevinkern · 2026-07-26
- Vibe coding user asks whether ChatGPT or Codex is now the better default stack — yungcontent · 2026-07-26
- A voice-tech test app becomes a customizable agent expression template — sull · 2026-07-26
- A production MCP pattern hides multi-agent orchestration behind a single thick tool — anilkr84 · 2026-07-26