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Anthropic's[1][2] own announcement, dated the day the model became available.- Start
- Feb 5, 202695% CONFIDENCEanthropic.com
Claude Opus 4.6 Released
Anthropic upgrades its smartest model with Claude Opus 4.6, industry-leading across agentic coding, computer use, tool use, search and finance.
- Anthropic announced Claude Opus 4.6 on February 5, 2026, available on claude.ai, the API (claude-opus-4-6) and major cloud platforms at unchanged pricing of $5/$25 per million tokens[1][2]
- Claude Code gained agent teams as a research preview, and Claude in PowerPoint arrived in research preview[1]
- The Opus product page dates it February 5, 2026 and describes it as Anthropic's most capable model at the time[2]
Notable features
- Opus 4.6 improves on its predecessor's coding: it plans more carefully, sustains agentic tasks for longer, operates more reliably in larger codebases and has better code review and debugging skills to catch its own mistakes; it also applies these to financial analyses, research, documents, spreadsheets and presentations[1]
- First Opus-class model with a 1M token context window (beta, Claude Developer Platform only), with premium pricing of $10/$37.50 above 200k prompt tokens and outputs up to 128k tokens[1]
- Results: highest score on Terminal-Bench 2.0, leads on Humanity's Last Exam, outperforms GPT-5.2 by about 144 Elo on GDPval-AA, and scores 76% on MRCR v2 8-needle 1M versus Sonnet 4.5's 18.5%[1]
- API features: adaptive thinking, four effort levels (low, medium, high default, max) and context compaction in beta[1]
- Safety: as well-aligned as Opus 4.5 with the lowest over-refusal rate of recent Claude models[1]
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