Claude Opus 5 (Medium) vs GPT-6.1 Terra (High)
Which is better for the money: Claude Opus 5 (Medium) by Anthropic 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.
Trade-off
Verdict
Depends on your budget
Claude Opus 5 (Medium) scores 0.9 points higher (44.8 vs 43.9) but costs 11× as much to run the benchmark ($2732 vs $239; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5 (Medium) when you need intelligence above 43.9, and GPT-6.1 Terra (High) when 43.9 is enough.
| Metric | Claude Opus 5 (Medium) | GPT-6.1 Terra (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 44.8 | 43.9 | −2.0% GPT-6.1 Terra (High) is 2.0% less intelligent |
| Total AA cost (lower is better) | $2,731.91 | $238.53 | −91.3% GPT-6.1 Terra (High) is 91.3% cheaper |
| End-to-end time (lower is better) | 13.23s | 11.16s | −15.6% GPT-6.1 Terra (High) is 15.6% faster |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $1.00 / $5.00 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Terra (High) vs Claude Opus 5 (Medium): 2.0% less intelligence, 91.3% less cost to run the AA benchmark, and 15.6% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (Medium) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- GPT-6.1 Terra (High) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Opus 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/claude-opus-5-medium/gpt-6-1-terra-high · Markdown: /api/v1/compare/claude-opus-5-medium/gpt-6-1-terra-high?format=md · llms.txt · agent skill