**Release:** [llm-anthropic 0.25.1](https://github.com/simonw/llm-anthropic/releases/tag/0.25.1)
- New model:
[Claude Opus 4.8](`claude-opus-4.8`
).- New
-o fast 1
option for[fast mode], for organizations with that feature enabled on their account.- Default max_tokens for each model now defaults to that model's maximum output rather than 8,192.
[#72]
See also my [notes on Opus 4.8](https://simonwillison.net/2026/May/28/claude-opus-4-8/) - I used this new release of `llm-anthropic`
to generate the pelicans.
source & further reading
simonwillison.net — original article
Directly Responsible Individuals (DRI)
Fable gets another bump
The new GPT-5.6 family: Luna, Terra, Sol