GPT 5.5 is close to Opus 4.7, but at 7x the cost[0]...

Either Opus 4.7 miscounts reasoning tokens, or it's A LOT more efficient than GPT 5.5

I thought they made GPT 5.5 more token efficient than 5.4, but it uses 2x the reasoning tokens.

[0]: https://aibenchy.com/compare/openai-gpt-5-5-medium/openai-gp...