GPT-5.6 Sol (Medium) vs GPT-5.6 Terra (Medium)
Which is better for the money: GPT-5.6 Sol (Medium) by OpenAI or GPT-5.6 Terra (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-5.6 Sol (Medium) scores 9.1 points higher (39.2 vs 30.1) but costs 2.2× as much to run the benchmark ($997 vs $447; premium vs mid-range cost classes). Pick GPT-5.6 Sol (Medium) when the extra intelligence is worth the premium, otherwise GPT-5.6 Terra (Medium).
| Metric | GPT-5.6 Sol (Medium) | GPT-5.6 Terra (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.2 | 30.1 | −23.2% GPT-5.6 Terra (Medium) is 23.2% less intelligent |
| Total AA cost (lower is better) | $997.39 | $446.53 | −55.2% GPT-5.6 Terra (Medium) is 55.2% cheaper |
| End-to-end time (lower is better) | 10.81s | 5.84s | −46.0% GPT-5.6 Terra (Medium) is 46.0% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Terra (Medium) vs GPT-5.6 Sol (Medium): 23.2% less intelligence, 55.2% less cost to run the AA benchmark, and 46.0% faster end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Sol (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- GPT-5.6 Terra (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
GPT-5.6 Sol (Medium)GPT-5.6 Terra (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/gpt-5-6-sol-medium/gpt-5-6-terra-medium · Markdown: /api/v1/compare/gpt-5-6-sol-medium/gpt-5-6-terra-medium?format=md · llms.txt · agent skill