Anthropic Launches Message Threads Beta for Messages API

Anthropic's Messages API message threads feature enters public beta, caching conversation context server-side so clients only send incremental messages. Integrated into Claude Code, it cuts median time-to-first-token by about 35% for large requests.

2026-11-03 ~ 2026-11-03 · 4 related posts

• Anthropic launches Message Threads in public beta, cutting long-conversation latency — ClaudeDevs · 2026-11-03
• Claude Code cuts TTFT ~35% on 500K-1M token requests with message threads — ClaudeDevs · 2026-11-03
• Anthropic's message threads cut TTFT 35% on 1M-token agent sessions — ClaudeDevs · 2026-11-03
• Claude Messages API launches message threads in public beta with server-side conversation caching — YashasGunderia · 2026-11-03