AI Research Atlas

Tool use (function calling) GA

Anthropic · 30 May 2024

Tool use becomes generally available across the Claude 3 family on the Anthropic API, Amazon Bedrock and Google Vertex AI.

Claude can call developer-defined tools to extract structured data, turn requests into API calls, query databases and automate software tasks. Adds streaming with tool use, forced tool selection, and tools combined with image input. Opus now emits thinking tags to show its reasoning before a tool call.

Date
Thursday, 30 May 2024
Lab
Anthropic
Kind
feature
Access
closed API

Tool use first appeared as a beta with Claude 2.1 (2023-11-21).

Sources

  1. claude.com/blog/tool-use-ga

This record was checked against its sources on 6 October 2026. How we check

Related