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20262020s
Claude Opus 4.6
Anthropic's flagship model, released February 5, 2026, introduced a 1-million-token context window, adaptive thinking, and multi-agent 'Agent Teams'.
Why It Mattered
Opus 4.6 expanded the context window from 200K to 1 million tokens (in beta) and introduced adaptive reasoning that engages deeper thinking only when needed, posting record results on programming and long-horizon agentic benchmarks. Its Agent Teams capability, which lets multiple Claude Code instances collaborate on a shared task, pushed the industry further toward orchestrated multi-agent software development.
Who Built It
Anthropic
Applications
- Agentic Coding
- Enterprise AI
- Long-context Analysis