Is Claude Fable 5.1 or GPT-4o-mini cheaper?
GPT-4o-mini is cheaper ($0.15 / 1M tokens input / $0.6 / 1M tokens output) vs Claude Fable 5.1 ($10 / 1M tokens input / $50 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.