I've benchmarked many models for my "AI bug hunting" script. Here's the latest run with (incl. Gemini 4 Argon). My favorite combo so far is 6.1 Sol + Sonnet 5.5. Sonnet 5.5 seems to need at least xhigh reasoning to shine - but that puts it in Opus territory pricewise.

GPT + Opus (via Copilot CLI) helped me uncover 180 JIT bugs, each with a minimal C# repro using only safe code 😶 - most had been hiding from us for many releases github.com/dotnet/runtime/is…

It took $15 worth of tokens + Reverse Anything to extract Heroes III's battlefield and port it to the web. Crazy what's possible now. Pandora's box has been opened.