9 ms·

This is just cache reads. In real usage it costs 15% more than Fable 5 -- all for marginal gains. https://artificialanalysis.ai/ https://artificialanalysis.ai/

• edg5000 15d ago
  Cache reads dominate in modern workflows (coding CLIs and modern web clients such as ChatGPT Work and Claude Cowork (web)).
  • fastball 15d ago
    Output tokens are 5x more expensive than input tokens, so I'm not sure "dominate" is entirely correct. A conversation with 20 turns, 50k tok growth per turn, 1m tok context at end would price out like this: Fable 5 ($1/M cache reads) ; cache reads 9.5M tok × $1.00 = $9.50 ; cache writes 1M tok × $12.50 = $12.50 ; output 1M tok × $50 = $50.00 ; total = $72.00 Fable 5.1 ($0.25/M cache reads) ; cache reads 9.5M tok × $0.25 = $2.38 ; cache writes 1M tok × $12.50 = $12.50 ; output 1M tok × $50 = $50.00 ; total = $64.88 So yes, cheaper, but not massively.
    • edg5000 15d ago
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