📰 Anthropic Launches Message Threads in Public Beta on the Messages API: Server-Side Conversations Cut Claude Code TTFT About 35% on 500K-1M Token Requests
On November 2 (US time) Anthropic put message threads into public beta on the Messages API (beta header message-threads-2026-08-12). The API keeps the conversation on the server: the first request sends the full conversation and creates a thread, and each later request sends only new messages plus…
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📰 Anthropic Messages API 推出 message threads 公测：服务端暂存对话、每轮只发新消息，Claude Code 百万 token 请求首 token 延迟降约 35%
Anthropic 11 月 2 日（美国时间）在 Messages API 上线 message threads 公测（beta 头 message-threads-2026-08-12）。API 在服务端暂存对话，首轮发完整对话建线程，之后每轮只发新消息和上一条回复的 id。
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