Anthropic adds message threads to Claude Platform for faster agent responses
Anthropic launched message threads in public beta on November 2, 2026, for its Claude Platform and Claude Models on AWS, Microsoft Foundry, and Google Cloud. The feature lets developers send only new messages in long-running agent sessions—such as coding or document-heavy workflows—reducing median latency for large requests (500,000 to 1 million tokens) by about 35% by avoiding full-conversation…
Key points
- Message threads cut latency by 35% for large requests (500K–1M tokens) by skipping full-conversation re-uploads
- Beta available on Claude Platform, AWS, Microsoft Foundry, and Google Cloud with all models enabled
- Threads expire in 5 minutes, require manual conversation history backup, and exclude HIPAA/zero-retention use
Threads work by splitting requests into create (full conversation) and continue (new messages only) steps. They expire after five minutes of inactivity and are stored in memory under server encryption, deleted within one hour. Developers must handle their own conversation history since there’s no API to retrieve or delete threads. The beta excludes organizations with Inference hooks, Message Batches, or zero-data-retention requirements. Anthropic’s SDK simplifies thread management but does not auto-retry failed continues or cache prompts—developers must manually implement caching and error handling.
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3 episodes →- Anthropic adds message threads to Claude Platform for faster agent responsesthis story
Anthropic Launches Message Threads Beta for Long-Running Agents
Unite.AI · 2 November 2026
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