Claude Sonnet 5.5 (Xhigh, Default Fallback) vs GPT-6 Sol (Xhigh)
Which is better for the money: Claude Sonnet 5.5 (Xhigh, Default Fallback) by Anthropic or GPT-6 Sol (Xhigh) 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 Sonnet 5.5 (Xhigh, Default Fallb… scores 7.7 points higher (51.9 vs 44.2) but costs 2.5× as much to run the benchmark ($2177 vs $855; flagship vs premium cost classes). Pick Claude Sonnet 5.5 (Xhigh, Default Fallb… when the extra intelligence is worth the premium, otherwise GPT-6 Sol (Xhigh).
| Metric | Claude Sonnet 5.5 (Xhigh, Default Fallback) | GPT-6 Sol (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.9 | 44.2 | −14.8% GPT-6 Sol (Xhigh) is 14.8% less intelligent |
| Total AA cost (lower is better) | $2,176.82 | $854.60 | −60.7% GPT-6 Sol (Xhigh) is 60.7% cheaper |
| End-to-end time (lower is better) | 33.91s | 41.96s | +23.7% GPT-6 Sol (Xhigh) is 23.7% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $2.00 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Sol (Xhigh) vs Claude Sonnet 5.5 (Xhigh, Default Fallback): 14.8% less intelligence, 60.7% less cost to run the AA benchmark, and 23.7% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Sonnet 5.5 (Xhigh, Default Fallback) is off the frontier: at the same or lower cost, Claude Opus 5.5 (High, Default Fallback) scores 53.60 for $2172.
- GPT-6 Sol (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
Claude Sonnet 5.5 (Xhigh, Default Fallback)GPT-6 Sol (Xhigh)Today's Pareto frontierEvery other model
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