Is Claude Opus 4.6 or GPT-6.1 Sol cheaper?
GPT-6.1 Sol is cheaper ($2 / 1M tokens input / $10 / 1M tokens output) vs Claude Opus 4.6 ($5 / 1M tokens input / $25 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.