# 🚨 Sonnet 5.5 Max beats GPT-6 Astra Max on the Intelligence Index vs. cost curve

*Published on: Mon, 28 Sep 2026 19:57:49 GMT*

🚨 Sonnet 5.5 Max beats GPT-6 Astra Max on the Intelligence Index vs. cost curve

A few other things stand out:

1. At medium, GPT-6 Sol is much cheaper than Sonnet 5.5 at a fairly similar intelligence level.
2. Around the Pareto line, GPT-6 Sol Max and Sonnet 5.5 High are basically neck and neck.
3. GPT-6 Astra Max lands roughly around Sonnet 5.5 XHigh.

+ Sonnet 5.5 Max is in a league of its own at the top.

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