Anthropic
Claude Fable 5
VS
OpenAI
GPT-5 nano
Decision Recommendation
⚖️ Trade-off decision: Choose Claude Fable 5 if you need the absolute highest accuracy for complex logic and coding. Choose GPT-5 nano if you want to optimize your budget, as it is 145.5x cheaper.
Model Specs
Claude Fable 5
Benchmarks & Scores
Coding (swe-bench-pro)Winner (+)
80.3%Reasoning (gpqa-diamond)Winner (+26.5%)
94.1%Cost & Performance
Cost (per 1M tokens)
$20.00Input: $10.00 | Output: $50.00Speed
60.3 tpsContext WindowLarger
1M tokensModel Specs
GPT-5 nano
Benchmarks & Scores
Coding (swe-bench-pro)
N/AReasoning (gpqa-diamond)
67.6%Cost & Performance
Cost (per 1M tokens)145.5x cheaper
$0.14Input: $0.05 | Output: $0.40Speed2.3x faster
137 tpsContext Window
400k tokensWant to customize weights or add more models?
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