Next steps

Diagnose and fix the most common thinking failures: configuration 400 errors, empty or missing thinking blocks, max\_tokens stops, and cache misses.

Change system instructions or tool availability partway through a conversation without invalidating the cached prefix that came before them.

Server-side context compaction for managing long conversations that approach context window limits.

Cache prompt prefixes with `cache_control` to cut costs and latency, using automatic caching or explicit breakpoints with 5-minute or 1-hour TTLs.