Post by KeyValue

Name: We paid 2x for Anthropic’s new Mythos-class flagship AI model. What we got back was not what the pri
Uploaded: 2026-06-11T10:23:46.985Z
Channel: KeyValue
Description: We paid 2x for Anthropic’s new Mythos-class flagship AI model. What we got back was not what the price promised. We tested Claude Fable 5 against Claude Opus 4.8 on a real flight-booking agent task:

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We paid 2x for Anthropic’s new Mythos-class flagship AI model. What we got back was not what the price promised. We tested Claude Fable 5 against Claude Opus 4.8 on a real flight-booking agent task: understand the request, search flights, rank options, and recommend the best one. Both models picked the right flight. But Fable 5 cost more than 2x, showed slightly higher token usage, and was slower for this short, structured workflow. The lesson is simple: premium models don’t automatically mean premium results for every task. And that doesn’t mean Fable 5 isn’t powerful. It likely shines on long, complex, reasoning-heavy work. But for simpler agent tasks, bigger isn’t always better. Watch the video before you default-upgrade your stack. #AI #Anthropic #ClaudeFable5 #AIAgents #keyValueSystems

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