Claude Opus 5 (Low) vs GPT-5.6 Terra (Max)
Which is better for the money: Claude Opus 5 (Low) by Anthropic or GPT-5.6 Terra (Max) 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 Terra (Max) scores 2.7 points higher (42.1 vs 39.4) but costs 1.6× as much to run the benchmark ($2501 vs $1561; flagship vs premium cost classes). Pick GPT-5.6 Terra (Max) when the extra intelligence is worth the premium, otherwise Claude Opus 5 (Low).
| Metric | Claude Opus 5 (Low) | GPT-5.6 Terra (Max) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 39.4 | 42.1 | +6.9% GPT-5.6 Terra (Max) is 6.9% more intelligent |
| Total AA cost (lower is better) | $1,560.91 | $2,500.72 | +60.2% GPT-5.6 Terra (Max) is 60.2% more expensive |
| End-to-end time (lower is better) | 11.37s | 110.99s | +876.2% GPT-5.6 Terra (Max) is 876.2% slower |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $2.00 / $12.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Terra (Max) vs Claude Opus 5 (Low): 6.9% more intelligence, 60.2% more cost to run the AA benchmark, and 876.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (Low) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- GPT-5.6 Terra (Max) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
Claude Opus 5 (Low)GPT-5.6 Terra (Max)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-low/gpt-5-6-terra · Markdown: /api/v1/compare/claude-opus-5-low/gpt-5-6-terra?format=md · llms.txt · agent skill