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How is Opus 5.5 cheaper AND better than Fable 5.1? Genuinely trying to understand the "how"

Anthropic dropped Opus 5.5 a few days ago ( https://www.anthropic.com/claude-opus-5-5 ) and the numbers are kind of wild if you take them at face value. 40% cheaper to run than Opus 5, output generation 30%+ faster, and it's landing around Fable 5.1's level on most benchmarks while beating GPT-6 As…

Read the full story at r/ArtificialInteligence ↗

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  1. 2026-09-27 20:54 · r/ArtificialInteligence
    How is Opus 5.5 cheaper AND better than Fable 5.1? Genuinely trying to understand the "how"

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