Gemini 4 Carbon (Low) vs GPT-6 Astra (Medium)
Which is better for the money: Gemini 4 Carbon (Low) by Google or GPT-6 Astra (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-11-04.
Trade-off
Verdict
Depends on your budget
Gemini 4 Carbon (Low) scores 2.6 points higher (54.2 vs 51.6) but costs 2.2× as much to run the benchmark ($5725 vs $2638; both flagship class). Pick Gemini 4 Carbon (Low) when the extra intelligence is worth the premium, otherwise GPT-6 Astra (Medium).
| Metric | Gemini 4 Carbon (Low) | GPT-6 Astra (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 54.2 | 51.6 | −4.8% GPT-6 Astra (Medium) is 4.8% less intelligent |
| Total AA cost (lower is better) | $5,725.02 | $2,638.29 | −53.9% GPT-6 Astra (Medium) is 53.9% cheaper |
| End-to-end time (lower is better) | 16.28s | 17.91s | +10.0% GPT-6 Astra (Medium) is 10.0% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $10.0 / $50.0 | |
| Input modalities | Text, Image, Speech, Video | Text, Image |
GPT-6 Astra (Medium) vs Gemini 4 Carbon (Low): 4.8% less intelligence, 53.9% less cost to run the AA benchmark, and 10.0% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Gemini 4 Carbon (Low) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 57.40 for $4766.
- GPT-6 Astra (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 54.60 for $1124.
Gemini 4 Carbon (Low)GPT-6 Astra (Medium)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-4-carbon-low/gpt-6-astra-medium · Markdown: /api/v1/compare/gemini-4-carbon-low/gpt-6-astra-medium?format=md · llms.txt · agent skill