Reddit post questions per-token pricing for Opus 5.5 vs Sonnet 5.5
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A r/OpenAI post argues Opus 5.5 costs double the $/M tokens of Sonnet 5.5 while scoring almost identically on a test and costing about the same to run. It claims GPT 6.1 Sol has barely worse results at the same $/M but far lower task cost.
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