Claude
Anthropic's AI assistant: top-tier reasoning, code, and adaptive Thinking mode.
Claude is the AI assistant built by Anthropic, founded by former OpenAI researchers. In 2026 it has become the go-to model for demanding tasks: long-form writing, reasoning, document analysis, and most notably software engineering.
The Claude Opus 4.7 release (April 2026) introduced an adaptive thinking mode: the model automatically scales its reasoning depth based on the complexity of the request, with no manual toggle. Claude has held the top spot on the WebDevArena leaderboard since launch.
Beyond the claude.ai web interface, Anthropic ships Claude Code, a CLI agent that runs autonomous tasks in your terminal (tests, refactors, deployments). The Anthropic API also powers thousands of third-party products.
Features
Key features
- Adaptive thinking: long reasoning auto-activated on complex prompts.
- 1M-token context window on Claude Opus 4.7 (1M context).
- Claude Code: terminal agent that writes, tests, and deploys.
- Multimodal vision: images, PDFs, screenshots.
- Artifacts: interactive mini web apps generated inline.
- Projects: persistent workspaces with memory and shared files.