Claude Haiku 5.5 (Medium) vs GPT-6 Luna (Medium)
Which is better for the money: Claude Haiku 5.5 (Medium) by Anthropic or GPT-6 Luna (Medium) 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
Claude Haiku 5.5 (Medium) scores 4.6 points higher (34.5 vs 29.9) but costs 1.8× as much to run the benchmark ($56.4 vs $31.2; mid-range vs budget cost classes). Pick Claude Haiku 5.5 (Medium) when the extra intelligence is worth the premium, otherwise GPT-6 Luna (Medium).
| Metric | Claude Haiku 5.5 (Medium) | GPT-6 Luna (Medium) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.5 | 29.9 | −13.3% GPT-6 Luna (Medium) is 13.3% less intelligent |
| Total AA cost (lower is better) | $56.36 | $31.17 | −44.7% GPT-6 Luna (Medium) is 44.7% cheaper |
| End-to-end time (lower is better) | 10.41s | 8.25s | −20.7% GPT-6 Luna (Medium) is 20.7% faster |
| Price per 1M tokens (in / out) | $0.10 / $0.50 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
GPT-6 Luna (Medium) vs Claude Haiku 5.5 (Medium): 13.3% less intelligence, 44.7% less cost to run the AA benchmark, and 20.7% 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 (Medium) is on today's frontier: nothing is both smarter and cheaper.
Claude Haiku 5.5 (Medium)GPT-6 Luna (Medium)Today's Pareto frontierEvery other model
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