Verdict
Built from the measurements below
- Accuracy is too close to call: Gemini 3.8 Flash scored 82.5% and Muse Wonder 78.8% on the same 80 questions, a gap within what chance alone could produce.
- Gemini 3.8 Flash is 5.8× cheaper per question as billed ($0.0037 vs $0.021), reasoning tokens included.
- Muse Wonder generates text 1.2× faster: 175 tokens per second against 142.
- Gemini 3.8 Flash starts answering sooner: 3.2 s to the first token, against 16.1 s for Muse Wonder.
Which should you choose?
Choose Gemini 3.8 Flash for the lower cost per correct answer ($0.0045 against $0.027) and a quicker first token. Choose Muse Wonder for faster streaming. The widest subject gap is in law: Gemini 3.8 Flash answered 6 of 6 correctly, Muse Wonder 4 of 6. With so few questions per subject, treat this as a lead to test on your own prompts, not a result.
Accuracy gap +3.7 points (z = 0.60). We call a winner only when z is at least 1.96, the usual 95% threshold. Speed, latency and price need a 10% margin.