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Anthropic's Message Threads cut time to first token by 35 percent for long conversations

This story is from 2026-11-03. It is preserved in the archive; the latest stories are on the live feed.

Anthropic released Message Threads for the Messages API. Instead of resending the entire conversation with every turn, agents now only transmit what's changed. For requests between 500,000 and one million tokens, time to first token drops by about 35 percent. The article Anthropic's Message Threads…

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Timeline · 4 reports

  1. 2026-11-05 22:17 · Hacker News Front Page
    Claude Code sends your email address to websites
  2. 2026-11-04 02:07 · r/ClaudeAI
    Anthropic shipped message threads (beta): Claude Code now sends only new messages per turn, about 35% lower time to first token on 500k to 1M token requests
  3. 2026-11-03 13:46 · The New Stack AI
    Anthropic speeds up Claude Code with message threads. But your token bill stays the same.
  4. 2026-11-03 12:35 · The Decoder
    Anthropic's Message Threads cut time to first token by 35 percent for long conversations

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