## Summary

- Update the context window table in `models.md` to reflect that Claude
Sonnet 4.6 and Opus 4.6 now support 1M token context windows (previously
listed as 200k)
- Remove Sonnet 4.5/4.6 from the "may increase in future releases"
callout since the 4.6 models are now at 1M

Release Notes:

- N/A