Claude Code system prompt tells Opus 5 to avoid excessive self-correction, but not Opus 4.8
repligate · x · 2026-09-13
A user spotted that Claude Code's system prompt contains a section specifically instructing Opus 5 to avoid excessive self-correction and rumination — and that section is omitted if the session starts with Fable or Opus 4.8, revealing model-specific behavioral tuning in the coding agent.
More from coding & agent
- AI-powered modular music synthesis written in Rust with full MCP access — simply-chris · 2026-09-13
- Yacine shows third CAD design iteration driven entirely by AI chat from his phone — yacineMTB · 2026-09-13
- CoreWeave Hacks Kicks Off: 200+ Builders Race to Build Self-Correcting Agents in 24 Hours — wandb · 2026-09-13
- Dev rebuilds his 2019 app with Rork, ships it much faster this time — rudrank · 2026-09-13
- Collage app screenshots into a contact sheet to slash your AI agent's context usage — pvncher · 2026-09-13
- Ruff author Charlie Marsh: we overestimate human code quality — especially our own — charliermarsh · 2026-09-13