Is Claude Opus 5.5 or Gemini 4 Argon cheaper?
Gemini 4 Argon is cheaper ($2 / 1M tokens input / $10 / 1M tokens output) vs Claude Opus 5.5 ($4 / 1M tokens input / $20 / 1M tokens output). Actual cost depends on your input/output token mix — estimate it with the pricing calculator.