GPT-5.5 (Medium) vs GPT-6.1 Terra (High)
Which is better for the money: GPT-5.5 (Medium) by OpenAI or GPT-6.1 Terra (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-6.1 Terra (High)
GPT-6.1 Terra (High) vs GPT-5.5 (Medium): 29.9% more intelligence, 87.0% less cost to run the AA benchmark, and 8.7% faster end-to-end.
| Metric | GPT-5.5 (Medium) | GPT-6.1 Terra (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 33.8 | 43.9 | +29.9% GPT-6.1 Terra (High) is 29.9% more intelligent |
| Total AA cost (lower is better) | $1,833.39 | $238.53 | −87.0% GPT-6.1 Terra (High) is 87.0% cheaper |
| End-to-end time (lower is better) | 12.23s | 11.16s | −8.7% GPT-6.1 Terra (High) is 8.7% faster |
| Price per 1M tokens (in / out) | $5.00 / $30.0 | $1.00 / $5.00 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- GPT-5.5 (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-6.1 Terra (High) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
GPT-5.5 (Medium)GPT-6.1 Terra (High)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-5-5-medium/gpt-6-1-terra-high · Markdown: /api/v1/compare/gpt-5-5-medium/gpt-6-1-terra-high?format=md · llms.txt · agent skill