Claude Opus 5.5 (Low, Default Fallback) vs GPT-6.1 Sol (Low)
Which is better for the money: Claude Opus 5.5 (Low, Default Fallback) by Anthropic or GPT-6.1 Sol (Low) 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
Claude Opus 5.5 (Low, Default Fallback) scores 0.2 points higher (42.3 vs 42.1) but costs 3.4× as much to run the benchmark ($860 vs $250; premium vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5.5 (Low, Default Fallback) when you need intelligence above 42.1, and GPT-6.1 Sol (Low) when 42.1 is enough.
| Metric | Claude Opus 5.5 (Low, Default Fallback) | GPT-6.1 Sol (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.3 | 42.1 | −0.5% GPT-6.1 Sol (Low) is 0.5% less intelligent |
| Total AA cost (lower is better) | $860.33 | $250.48 | −70.9% GPT-6.1 Sol (Low) is 70.9% cheaper |
| End-to-end time (lower is better) | 15.14s | 12.72s | −16.0% GPT-6.1 Sol (Low) is 16.0% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6.1 Sol (Low) vs Claude Opus 5.5 (Low, Default Fallback): 0.5% less intelligence, 70.9% less cost to run the AA benchmark, and 16.0% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Low, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- GPT-6.1 Sol (Low) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Opus 5.5 (Low, Default Fallback)GPT-6.1 Sol (Low)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-5-5-low/gpt-6-1-sol-low · Markdown: /api/v1/compare/claude-opus-5-5-low/gpt-6-1-sol-low?format=md · llms.txt · agent skill