AI Matters
Why it matters
Anthropic's newest AI model undercuts its priciest rival on cost
The Decoder Anthropic's Claude Opus 5 costs well below Fable 5 while matching or beating it across most benchmarks
Anthropic's Claude Opus 5 tops an independent benchmark index while costing up to half as much as the company's priciest model, Fable 5.
Why it matters
Cheaper, competitive AI models mean lower costs for businesses and developers building products on top of them.
Latest brief · Jul 25, 2026