Opus vs Fable Cost Dynamics: Verbose Output Closes the Gap
adonis_singh · x · 2026-07-25
A developer compared the cost dynamics of Opus and Fable models on a benchmark. Data shows that while Opus costs about 14% less to run than Fable, the gap is narrow because Opus generates roughly 2.5x the output tokens. Fable, by contrast, is significantly more terse in its responses.
Related event: Claude Opus 5 Lags in Vision Benchmarks and Cost Efficiency(4 posts)→
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