Is Claude 3.5 Haiku or Claude Opus 4.6 Fast cheaper?
Claude 3.5 Haiku is cheaper ($0.152 / 1M tokens input / $0.752 / 1M tokens output) vs Claude Opus 4.6 Fast ($5.64 / 1M tokens input / $28.21 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.