Fable is Opus, Opus is Sonnet, etc?
Summary
Suggests that Anthropic's Fable model is equivalent to Opus, and Opus to Sonnet, possibly indicating a rebranding or restructuring of model tiers.
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Making Fable Cheaper Than Opus (12 minute read)
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@kevinwhinnery: More to come on this topic - Fable Sonnet.
Kevin Whinnery teases an upcoming integration between Fable and Sonnet, with Brad Abrams noting Fable is back and suggesting Sonnet 5 handles loops while Fable takes hard calls.
@diegocabezas01: Use Fable 5 as orchestrator and Opus + Codex to execute (to save fable usage): Fable 5 (max reasoning) = orchestrator O…
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@PrajwalTomar_: WAIT. Anthropic just proved you don't need Fable 5 for everything. With their own benchmarks. They tested "Fable 5 orch…
Anthropic benchmark shows that using a larger model (Fable) as orchestrator with cheaper models (Sonnet) as workers achieves 96% of full Fable performance at 46% cost, available now in Claude Code.