Gemini 3.1 Flash-Lite vs GPT-5.5 Instant (June 2026)
Which is better for the money: Gemini 3.1 Flash-Lite by Google or GPT-5.5 Instant (June 2026) 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-5.5 Instant (June 2026) scores 10.4 points higher (26.0 vs 15.6) but costs 7.6× as much to run the benchmark ($1184 vs $156; premium vs mid-range cost classes). They are not alternatives at one budget: pick GPT-5.5 Instant (June 2026) when you need intelligence above 15.6, and Gemini 3.1 Flash-Lite when 15.6 is enough.
| Metric | Gemini 3.1 Flash-Lite | GPT-5.5 Instant (June 2026) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 15.6 | 26.0 | +66.7% GPT-5.5 Instant (June… is 66.7% more intelligent |
| Total AA cost (lower is better) | $155.87 | $1,184.34 | +659.8% GPT-5.5 Instant (June… is 7.6× more expensive |
| End-to-end time (lower is better) | 6.10s | 16.68s | +173.4% GPT-5.5 Instant (June… is 173.4% slower |
| Price per 1M tokens (in / out) | $0.25 / $1.50 | $5.00 / $30.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-5.5 Instant (June 2026) vs Gemini 3.1 Flash-Lite: 66.7% more intelligence, 659.8% more cost to run the AA benchmark, and 173.4% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 3.1 Flash-Lite is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
- GPT-5.5 Instant (June 2026) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Gemini 3.1 Flash-LiteGPT-5.5 Instant (June 2026)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-3-1-flash-lite-preview/gpt-5-5-instant-06-26 · Markdown: /api/v1/compare/gemini-3-1-flash-lite-preview/gpt-5-5-instant-06-26?format=md · llms.txt · agent skill