Original sourceThe DecoderAdditional: The New Stack
Summary
Anthropic launched Message Threads in public beta for Claude to improve response speed in long conversations. Previously, every API call resent the full conversation history; now only changes since the last message are transmitted, reducing time-to-first-token by about 35% for large requests of 500…
Key points
- Agent developers running long sessions can directly benefit from lower latency but should not expect costs to fall in tandem.
- Lower latency directly improves the interactive experience of long-context agents, while the unchanged cost structure reminds teams to focus optimization elsewhere.
- Coding and document-processing agents respond more promptly, but the five-minute idle expiry affects workflow design for long-running tasks.
Editorial note
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