Gemini 3.5 Flash-Lite vs GPT-6 Astra (Xhigh)
Which is better for the money: Gemini 3.5 Flash-Lite by Google or GPT-6 Astra (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
GPT-6 Astra (Xhigh) scores 30.2 points higher (52.4 vs 22.2) but costs 10× as much to run the benchmark ($3803 vs $366; flagship vs mid-range cost classes). They are not alternatives at one budget: pick GPT-6 Astra (Xhigh) when you need intelligence above 22.2, and Gemini 3.5 Flash-Lite when 22.2 is enough.
| Metric | Gemini 3.5 Flash-Lite | GPT-6 Astra (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 22.2 | 52.4 | +136.0% GPT-6 Astra (Xhigh) is 2.4× more intelligent |
| Total AA cost (lower is better) | $365.63 | $3,802.98 | +940.1% GPT-6 Astra (Xhigh) is 10× more expensive |
| End-to-end time (lower is better) | 9.09s | 176.59s | +1842.7% GPT-6 Astra (Xhigh) is 1842.7% slower |
| Price per 1M tokens (in / out) | $0.30 / $2.50 | $10.0 / $50.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6 Astra (Xhigh) vs Gemini 3.5 Flash-Lite: 136.0% more intelligence, 940.1% more cost to run the AA benchmark, and 1842.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 3.5 Flash-Lite is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
- 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-LiteGPT-6 Astra (Xhigh)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-3-5-flash-lite/gpt-6-astra-xhigh · Markdown: /api/v1/compare/gemini-3-5-flash-lite/gpt-6-astra-xhigh?format=md · llms.txt · agent skill