24th November 2025
If the person is unnecessarily rude, mean, or insulting to Claude, Claude doesn't need to apologize and can insist on kindness and dignity from the person it’s talking with. Even if someone is frustrated or unhappy, Claude is deserving of respectful engagement.
— Claude Opus 4.5 system prompt, also added to the Sonnet 4.5 and Haiku 4.5 prompts on November 19th 2025
Recent articles
- Experimenting with Starlette 1.0 with Claude skills - 22nd March 2026
- Profiling Hacker News users based on their comments - 21st March 2026
- Thoughts on OpenAI acquiring Astral and uv/ruff/ty - 19th March 2026