Claude Opus 5 (High) vs Grok 4.3 (Non-reasoning)
Which is better for the money: Claude Opus 5 (High) by Anthropic or Grok 4.3 (Non-reasoning) by SpaceXAI? 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 (High) scores 34.1 points higher (48.1 vs 14.0) but costs 17× as much to run the benchmark ($4332 vs $250; flagship vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5 (High) when you need intelligence above 14.0, and Grok 4.3 (Non-reasoning) when 14.0 is enough.
| Metric | Claude Opus 5 (High) | Grok 4.3 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 48.1 | 14.0 | −70.9% Grok 4.3 (Non-reasoni… is 70.9% less intelligent |
| Total AA cost (lower is better) | $4,331.68 | $250.37 | −94.2% Grok 4.3 (Non-reasoni… is 94.2% cheaper |
| End-to-end time (lower is better) | 26.50s | 5.86s | −77.9% Grok 4.3 (Non-reasoni… is 77.9% faster |
| Price per 1M tokens (in / out) | $5.00 / $25.0 | $1.25 / $2.50 | |
| Input modalities | Text, Image | Text, Image |
Grok 4.3 (Non-reasoning) vs Claude Opus 5 (High): 70.9% less intelligence, 94.2% less cost to run the AA benchmark, and 77.9% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Opus 5 (High) is off the frontier: at the same or lower cost, Claude Opus 5.5 (Xhigh, Default Fallback) scores 56.00 for $4057.
- Grok 4.3 (Non-reasoning) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
Claude Opus 5 (High)Grok 4.3 (Non-reasoning)Today's Pareto frontierEvery other model
Matchup
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