News
Claude Fable 5.1 and Mythos 5.1: faster, half the token usage
Anthropic released Claude Fable 5.1 and Mythos 5.1. Base price holds, but cache reads are 75% cheaper and token usage drops by half.
Fable
Claude Fable — Modell-Linie von Anthropic.
News
Claude Opus 5.5: Fable-Level Performance at an Opus Price, and boostN Already Runs It
Anthropic released Claude Opus 5.5: $4 / $20 per million tokens, about 40% cheaper to run than Opus 5 and ahead of Fable 5.1 on coding benchmarks.
News
Claude Opus 5: Anthropic's New Flagship Bets on Efficiency, Not a Price Cut
Anthropic shipped Opus 5 — same token price as 4.8, and per the vendor near-Fable performance at roughly half the cost per task.
News
Anthropic Starts Watermarking: New Claude Models Mark Their Text
Anthropic watermarks every model released from 2 August 2026. Fable 5.1 goes first. What it can do, where it fails, and who gets to verify.
News
Claude Sonnet 5: Anthropic's workhorse at a promo price of 2/10 dollars
Anthropic releases Claude Sonnet 5 on July 1, 2026 — near-Opus performance per the vendor, at an intro price of 2/10 dollars per million tokens.