Anthropic Claude API

Anthropic Claude Messages API with tool use + MCP.

Definition

Claude API features: extended context 200k tokens (Claude 3.5 / 4), 1M context (Claude 4.5 1M / 4.7 1M), tool use definition + execution loop, computer use (screenshot + action loop), prompt caching (1h ephemeral, 5min, 1h), batch API 50% discount, file uploads (PDF, images), citations, MCP servers integration, Messages Batches API.

Origin

Anthropic PBC, founded 2021 by Dario + Daniela Amodei (ex-OpenAI), Claude 1 March 2023, Claude 3 March 2024, Claude 4 May 2025.

Usage

Adopted by Notion, Zoom, Quora, Bridgewater, DuckDuckGo. Available via Anthropic direct, AWS Bedrock, Google Vertex AI.

Related terms

• Anthropic — éditeur.
• MCP — standard tool integration Anthropic.
• OpenAI Assistants API — concurrent.