Anthropic
Claude Fable 5
VS
OpenAI
GPT-5.5
Decision Recommendation
⚖️ Trade-off decision: Choose Claude Fable 5 if you need the absolute highest accuracy for complex logic and coding. Choose GPT-5.5 if you want to optimize your budget, as it is 1.8x cheaper.
Model Specs
Claude Fable 5
Benchmarks & Scores
Coding (swe-bench-pro)Winner (+21.7%)
80.3%Reasoning (gpqa-diamond)Winner (+0.5%)
94.1%Cost & Performance
Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00Speed
60.3 tpsContext Window
1M tokensModel Specs
GPT-5.5
Benchmarks & Scores
Coding (swe-bench-pro)
58.6%Reasoning (gpqa-diamond)
93.6%Cost & Performance
Cost (per 1M tokens)1.8x cheaper
$11.25Input: $5.00 | Output: $30.00Speed1.2x faster
72.7 tpsContext WindowLarger
1.05M tokensWant to customize weights or add more models?
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