Claude Opus 5.5 (Low, Default Fallback) vs GPT-6 Sol (Medium)
Which is better for the money: Claude Opus 5.5 (Low, Default Fallback) by Anthropic or GPT-6 Sol (Medium) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Trade-off
Verdict
Depends on your budget
Claude Opus 5.5 (Low, Default Fallback) scores 2.5 points higher (42.3 vs 39.8) but costs 2.1× as much to run the benchmark ($860 vs $416; premium vs mid-range cost classes). Pick Claude Opus 5.5 (Low, Default Fallback) when the extra intelligence is worth the premium, otherwise GPT-6 Sol (Medium).
| Metric | Claude Opus 5.5 (Low, Default Fallback) | GPT-6 Sol (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.3 | 39.8 | −5.9% GPT-6 Sol (Medium) is 5.9% less intelligent |
| Total AA cost (lower is better) | $860.33 | $416.32 | −51.6% GPT-6 Sol (Medium) is 51.6% cheaper |
| End-to-end time (lower is better) | 11.16s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (Medium) vs Claude Opus 5.5 (Low, Default Fallback): 5.9% less intelligence, 51.6% less cost to run the AA benchmark, and end-to-end time not fully reported.
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 Sol (Medium) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
Claude Opus 5.5 (Low, Default Fallback)GPT-6 Sol (Medium)Today's Pareto frontierEvery other model
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