Anthropic 在 Claude 平台公测 Message Threads，长对话首 token 时间降低约 35%
Anthropic's Message Threads cut time to first token by 35 percent for long conversations
Anthropic 在 Claude 平台公测 Message Threads，API 请求不再重发全部对话历史，只传输上一条消息以来的增量内容。据 Anthropic 数据，在 50 万至 100 万 token 的请求中首 token 时间（time to first token）降低约 35%，编码智能体、计算机操作智能体和处理大量文档或图像的工作流受益最明显。
Anthropic released Message Threads as a public beta on its Claude platform. Until now, every API request had to resend the entire conversation history. Message Threads only transmits what's changed since the last message, cutting time to first token by about 35 percent for requests between 500,000 and one million tokens, according to Anthropic.
Coding agents, computer-use agents, and workflows processing lots of documents or images benefit the most, the company says. The thread stays encrypted in memory between requests and expires after five minutes of inactivity. Token usage doesn't change since Claude still reads the full conversation history. The feature works on the Claude platform and through AWS, Microsoft Foundry, and Google Cloud. Details are in the documentation.
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来源：The Decoder · the-decoder.com