Gemini 3.8 Flash (Medium) vs GPT-6.1 Terra (Non-reasoning)
Which is better for the money: Gemini 3.8 Flash (Medium) by Google or GPT-6.1 Terra (Non-reasoning) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
Gemini 3.8 Flash (Medium) scores 6.3 points higher (39.8 vs 33.5) but costs 18× as much to run the benchmark ($2703 vs $154; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Gemini 3.8 Flash (Medium) when you need intelligence above 33.5, and GPT-6.1 Terra (Non-reasoning) when 33.5 is enough.
| Metric | Gemini 3.8 Flash (Medium) | GPT-6.1 Terra (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.8 | 33.5 | −15.8% GPT-6.1 Terra (Non-re… is 15.8% less intelligent |
| Total AA cost (lower is better) | $2,703.34 | $153.58 | −94.3% GPT-6.1 Terra (Non-re… is 94.3% cheaper |
| End-to-end time (lower is better) | Not reported | 6.76s | — not comparable |
| Price per 1M tokens (in / out) | $0.75 / $3.75 | $1.00 / $5.00 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6.1 Terra (Non-reasoning) vs Gemini 3.8 Flash (Medium): 15.8% less intelligence, 94.3% less 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, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- GPT-6.1 Terra (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6 Luna (Max) scores 38.10 for $122.
Gemini 3.8 Flash (Medium)GPT-6.1 Terra (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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