AI HOT (Curated Pool)Jun 10, 2026, 01:04 UTC+8

Claude Fable 5 and Claude Mythos 5

Claude Fable 5 和 Claude Mythos 5

Anthropic launched Claude Fable 5 and Claude Mythos 5 at $10 per million input tokens and $50 per million output tokens. Fable 5 leads FrontierCode among frontier models, while Mythos 5 reports about 10x acceleration in drug design and about 80% scientist preference in blinded molecular biology hypothesis tests.

Why it matters: HKR-H/K/R all pass: this is an official Anthropic dual-model release with pricing, coding benchmark, and drug-design speed claims. As a major Claude model update plus Anthropic substantive-update bump, it sits in the 85–94 band.

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Anthropic tied the capability launch to access control this time. Fable 5 goes to general users, while Mythos 5 starts inside Project Glasswing and trusted access. The hard detail is not the benchmark table. It is one base model with two gates: Fable 5 routes some cybersecurity queries down to Claude Opus 4.8, with triggers averaging under 5% of sessions.

The $10/M input and $50/M output pricing is less than half of Claude Mythos Preview, so Anthropic is preparing for real usage, not a museum-grade frontier demo. Stripe’s 50-million-line Ruby migration claim is wild: one day versus more than two months for a team by hand. I still treat that as customer PR until independent runs show the same pattern. Mythos 5’s security power arrives through a US government channel first; access policy, not API price, sets the adoption curve.

Source: AI HOT (Curated Pool) · anthropic.com
Published: Jun 10, 2026, 01:04 UTC+8 · Jun 10, 2026