Anthropic shipped Claude Sonnet 5 on June 30 at $2/$10 per million tokens, closing most of the capability gap to Opus 4.8 at a third of the price — while Fable 5 spent 19 days pulled from the market under US export controls before returning July 1 with a stricter cybersecurity classifier. What actually changed, what the benchmark table hides, and which tier real workloads should run on now.
Model-Comparison
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Claude Sonnet 5 and Fable 5: The New Generation, Priced and Positioned -
Claude Fable 5 vs Opus: A Realistic Look at Whether You Need the Mythos-Class Model Anthropic just released Claude Fable 5, the first public Mythos-class model, at double the price of Opus 4.8. A realistic breakdown of where the capability gap actually shows up, where it does not, the safety-routing wrinkle, and a decision framework for when to pay for Fable versus staying on Opus or Sonnet.