GPT-5.6 Terra (Low) vs GPT-6.1 Sol (Medium)
Which is better for the money: GPT-5.6 Terra (Low) by OpenAI or GPT-6.1 Sol (Medium) 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-6.1 Sol (Medium) scores 20.3 points higher (47.8 vs 27.5) but costs 1.0× as much to run the benchmark ($361 vs $350; both mid-range class). Pick GPT-6.1 Sol (Medium) when the extra intelligence is worth the premium, otherwise GPT-5.6 Terra (Low).
| Metric | GPT-5.6 Terra (Low) | GPT-6.1 Sol (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 27.5 | 47.8 | +73.8% GPT-6.1 Sol (Medium) is 73.8% more intelligent |
| Total AA cost (lower is better) | $350.36 | $361.37 | +3.1% GPT-6.1 Sol (Medium) is 3.1% more expensive |
| End-to-end time (lower is better) | 5.92s | 13.94s | +135.5% GPT-6.1 Sol (Medium) is 135.5% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Sol (Medium) vs GPT-5.6 Terra (Low): 73.8% more intelligence, 3.1% more cost to run the AA benchmark, and 135.5% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Low) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- GPT-6.1 Sol (Medium) is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Terra (Low)GPT-6.1 Sol (Medium)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/gpt-5-6-terra-low/gpt-6-1-sol-medium · Markdown: /api/v1/compare/gpt-5-6-terra-low/gpt-6-1-sol-medium?format=md · llms.txt · agent skill