Claude Haiku 5.5 (Low) vs GPT-6 Luna (High)
Which is better for the money: Claude Haiku 5.5 (Low) by Anthropic or GPT-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
GPT-6 Luna (High) scores 3.4 points higher (32.9 vs 29.5) but costs 1.4× as much to run the benchmark ($47.9 vs $34.3; both budget class). Pick GPT-6 Luna (High) when the extra intelligence is worth the premium, otherwise Claude Haiku 5.5 (Low).
| Metric | Claude Haiku 5.5 (Low) | GPT-6 Luna (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.5 | 32.9 | +11.5% GPT-6 Luna (High) is 11.5% more intelligent |
| Total AA cost (lower is better) | $34.31 | $47.85 | +39.5% GPT-6 Luna (High) is 39.5% more expensive |
| End-to-end time (lower is better) | 11.44s | 21.41s | +87.2% GPT-6 Luna (High) is 87.2% slower |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (High) vs Claude Haiku 5.5 (Low): 11.5% more intelligence, 39.5% more cost to run the AA benchmark, and 87.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- Claude Haiku 5.5 (Low) is off the frontier: at the same or lower cost, GPT-6 Luna (Medium) scores 29.90 for $31.2.
- GPT-6 Luna (High) is on today's frontier: nothing is both smarter and cheaper.
Claude Haiku 5.5 (Low)GPT-6 Luna (High)Today's Pareto frontierEvery other model
Matchup
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