GPT-5.6 Terra (Medium) vs GPT-6.1 Sol (Medium)
Which is better for the money: GPT-5.6 Terra (Medium) 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.
Clear winner
Verdict
Pick GPT-6.1 Sol (Medium)
GPT-6.1 Sol (Medium) vs GPT-5.6 Terra (Medium): 58.8% more intelligence, 19.1% less cost to run the AA benchmark, and 138.7% slower end-to-end.
| Metric | GPT-5.6 Terra (Medium) | GPT-6.1 Sol (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 30.1 | 47.8 | +58.8% GPT-6.1 Sol (Medium) is 58.8% more intelligent |
| Total AA cost (lower is better) | $446.53 | $361.37 | −19.1% GPT-6.1 Sol (Medium) is 19.1% cheaper |
| End-to-end time (lower is better) | 5.84s | 13.94s | +138.7% GPT-6.1 Sol (Medium) is 138.7% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- 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-6.1 Sol (Medium) is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Terra (Medium)GPT-6.1 Sol (Medium)Today's Pareto frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-terra-medium/gpt-6-1-sol-medium · Markdown: /api/v1/compare/gpt-5-6-terra-medium/gpt-6-1-sol-medium?format=md · llms.txt · agent skill