Claude Haiku 5.5 (Medium) vs GPT-6 Luna (Xhigh)
Which is better for the money: Claude Haiku 5.5 (Medium) by Anthropic or GPT-6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
GPT-6 Luna (Xhigh) scores 0.1 points higher (34.6 vs 34.5) but costs 1.2× as much to run the benchmark ($66.8 vs $56.4; both mid-range class). Pick GPT-6 Luna (Xhigh) when the extra intelligence is worth the premium, otherwise Claude Haiku 5.5 (Medium).
| Metric | Claude Haiku 5.5 (Medium) | GPT-6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.5 | 34.6 | +0.3% GPT-6 Luna (Xhigh) is 0.3% more intelligent |
| Total AA cost (lower is better) | $56.36 | $66.81 | +18.5% GPT-6 Luna (Xhigh) is 18.5% more expensive |
| End-to-end time (lower is better) | 10.41s | 21.27s | +104.3% GPT-6 Luna (Xhigh) is 104.3% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Xhigh) vs Claude Haiku 5.5 (Medium): 0.3% more intelligence, 18.5% more cost to run the AA benchmark, and 104.3% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Haiku 5.5 (Medium) is on today's frontier: nothing is both smarter and cheaper.
- GPT-6 Luna (Xhigh) is on today's frontier: nothing is both smarter and cheaper.
Claude Haiku 5.5 (Medium)GPT-6 Luna (Xhigh)Today's Pareto frontierEvery other model
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