Anthropic Adds Message Threads to Claude Messages API
Server-side thread caching shifts state management from the client to Anthropic's infrastructure, cutting request payloads and per-turn latency for chat applications. Builders maintaining long conversations in production will find this directly useful. It parallels similar stateful-session approaches from competitors like OpenAI's Responses API, so teams comparing multi-turn efficiency across providers have a new data point.
Anthropic has launched message threads in public beta on the Claude Messages API. The feature caches the conversation on Anthropic's server between turns. Developers send only new messages plus the previous message ID instead of resending the full conversation history. Claude begins responding sooner because less input needs to be transmitted each turn.
Message threads are now in public beta on the Messages API.
The API caches your conversation on the server between turns, so instead of resending the full conversation, you send only new messages and the previous message ID, and Claude starts responding sooner. https://t.co/VeiehyqfIg
