Gemini 3.5 Flash (High) vs GPT-6 Astra (Xhigh)
Which is better for the money: Gemini 3.5 Flash (High) 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.
Clear winner
Verdict
Pick GPT-6 Astra (Xhigh)
GPT-6 Astra (Xhigh) vs Gemini 3.5 Flash (High): 60.7% more intelligence, 9.9% less cost to run the AA benchmark, and 880.6% slower end-to-end.
| Metric | Gemini 3.5 Flash (High) | GPT-6 Astra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.6 | 52.4 | +60.7% GPT-6 Astra (Xhigh) is 60.7% more intelligent |
| Total AA cost (lower is better) | $4,222.12 | $3,802.98 | −9.9% GPT-6 Astra (Xhigh) is 9.9% cheaper |
| End-to-end time (lower is better) | 16.65s | 163.27s | +880.6% GPT-6 Astra (Xhigh) is 880.6% slower |
| Price per 1M tokens (in / out) | $1.50 / $9.00 | $10.0 / $50.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
Today's Pareto frontier
Against the frontier
- Gemini 3.5 Flash (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- GPT-6 Astra (Xhigh) is off the frontier: at the same or lower cost, Kimi K3.1 Pro scores 55.10 for $3117.
Gemini 3.5 Flash (High)GPT-6 Astra (Xhigh)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-3-5-flash/gpt-6-astra-xhigh · Markdown: /api/v1/compare/gemini-3-5-flash/gpt-6-astra-xhigh?format=md · llms.txt · agent skill