Gemini 3.8 Flash (Medium) vs GPT-6 Astra (Xhigh)
Which is better for the money: Gemini 3.8 Flash (Medium) by Google or GPT-6 Astra (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Xhigh) scores 12.6 points higher (52.4 vs 39.8) but costs 3.5× as much to run the benchmark ($3803 vs $1100; flagship vs premium cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Xhigh) when you need intelligence above 39.8, and Gemini 3.8 Flash (Medium) when 39.8 is enough.
| Metric | Gemini 3.8 Flash (Medium) | GPT-6 Astra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.8 | 52.4 | +31.7% GPT-6 Astra (Xhigh) is 31.7% more intelligent |
| Total AA cost (lower is better) | $1,100.06 | $3,802.98 | +245.7% GPT-6 Astra (Xhigh) is 3.5× more expensive |
| End-to-end time (lower is better) | Not reported | 163.27s | — not comparable |
| Price per 1M tokens (in / out) | $0.75 / $3.75 | $10.0 / $50.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6 Astra (Xhigh) vs Gemini 3.8 Flash (Medium): 31.7% more intelligence, 245.7% more cost to run the AA benchmark, and end-to-end time not fully reported.
Today's Pareto frontier
Against the frontier
- Gemini 3.8 Flash (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6 Astra (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
Gemini 3.8 Flash (Medium)GPT-6 Astra (Xhigh)Today's Pareto frontierEvery other model
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