Claude Fable 5

Claude Fable 5 (June 2026) is Anthropic's most capable widely-released model — built for the most demanding reasoning and long-horizon agentic work, sitting above Claude Opus 4.8. Adaptive thinking is always on, and it uses a 1M-token context with vision and full tool use.

Best for

• The hardest reasoning and multi-hour agentic coding
• Long-horizon autonomous workflows (memory tool, code execution, programmatic tool calling)
• Whole-repo / large-document analysis (1M context)
• When you want the single most capable Claude available

How it compares — and the India angle

• Anthropic's top model — above Opus 4.8; it also adds safety classifiers that can decline requests (with fallback to another Claude).
• Premium price ($10/$50 per 1M) — for Indian teams, reserve it for the hardest tasks and route bulk work to Sonnet/Haiku.
• Note: it was briefly restricted by US export controls in June 2026 (over a jailbreak/security concern) before being restored globally.