Claude Haiku 5.5 (Medium) vs GPT-6 Luna (Low)
Which is better for the money: Claude Haiku 5.5 (Medium) by Anthropic or GPT-6 Luna (Low) 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 (Medium) scores 13.0 points higher (34.5 vs 21.5) but costs 5.3× as much to run the benchmark ($56.4 vs $10.6; mid-range vs budget cost classes). They are not alternatives at one budget: pick Claude Haiku 5.5 (Medium) when you need intelligence above 21.5, and GPT-6 Luna (Low) when 21.5 is enough.
| Metric | Claude Haiku 5.5 (Medium) | GPT-6 Luna (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.5 | 21.5 | −37.7% GPT-6 Luna (Low) is 37.7% less intelligent |
| Total AA cost (lower is better) | $56.36 | $10.63 | −81.1% GPT-6 Luna (Low) is 81.1% cheaper |
| End-to-end time (lower is better) | 15.74s | 6.99s | −55.6% GPT-6 Luna (Low) is 55.6% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Low) vs Claude Haiku 5.5 (Medium): 37.7% less intelligence, 81.1% less cost to run the AA benchmark, and 55.6% faster 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 (Low) is on today's frontier: nothing is both smarter and cheaper.
Claude Haiku 5.5 (Medium)GPT-6 Luna (Low)Today's Pareto frontierEvery other model
Matchup
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