Claude Haiku 5.5 (Xhigh) vs GPT-5.6 Luna (High)
Which is better for the money: Claude Haiku 5.5 (Xhigh) by Anthropic or GPT-5.6 Luna (High) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Trade-off
Verdict
Depends on your budget
Claude Haiku 5.5 (Xhigh) scores 9.1 points higher (41.2 vs 32.1) but costs 1.5× as much to run the benchmark ($158 vs $108; both mid-range class). Pick Claude Haiku 5.5 (Xhigh) when the extra intelligence is worth the premium, otherwise GPT-5.6 Luna (High).
| Metric | Claude Haiku 5.5 (Xhigh) | GPT-5.6 Luna (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 41.2 | 32.1 | −22.1% GPT-5.6 Luna (High) is 22.1% less intelligent |
| Total AA cost (lower is better) | $157.58 | $108.15 | −31.4% GPT-5.6 Luna (High) is 31.4% cheaper |
| End-to-end time (lower is better) | 75.35s | 16.30s | −78.4% GPT-5.6 Luna (High) is 78.4% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
GPT-5.6 Luna (High) vs Claude Haiku 5.5 (Xhigh): 22.1% less intelligence, 31.4% less cost to run the AA benchmark, and 78.4% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Haiku 5.5 (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
- GPT-5.6 Luna (High) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (High) scores 37.80 for $94.1.
Claude Haiku 5.5 (Xhigh)GPT-5.6 Luna (High)Today's Pareto frontierEvery other model
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