Comment by baq

The jagged frontier of frontier models means treating tokens as fungible between providers is naive at the limit of capability, but also will work for solved problems far from the boundary. The problem is you need to keep evaluating all models to know where your use case lies on the frontier map.

As a concrete example, you’ll get very different results for the same prompt for sonnet, opus, fable, gemini, gpt 5.5, …