Claude Haiku 5.5 (Low) vs GPT-5.6 Luna (High)
Which is better for the money: Claude Haiku 5.5 (Low) 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
GPT-5.6 Luna (High) scores 2.6 points higher (32.1 vs 29.5) but costs 3.2× as much to run the benchmark ($108 vs $34.3; mid-range vs budget cost classes). They are not alternatives at one budget: pick GPT-5.6 Luna (High) when you need intelligence above 29.5, and Claude Haiku 5.5 (Low) when 29.5 is enough.
| Metric | Claude Haiku 5.5 (Low) | GPT-5.6 Luna (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 29.5 | 32.1 | +8.8% GPT-5.6 Luna (High) is 8.8% more intelligent |
| Total AA cost (lower is better) | $34.31 | $108.15 | +215.2% GPT-5.6 Luna (High) is 3.2× more expensive |
| End-to-end time (lower is better) | 10.81s | 16.31s | +50.9% GPT-5.6 Luna (High) is 50.9% slower |
| 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 (Low): 8.8% more intelligence, 215.2% more cost to run the AA benchmark, and 50.9% 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-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 (Low)GPT-5.6 Luna (High)Today's Pareto frontierEvery other model
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-haiku-5-5-low/gpt-5-6-luna-high · Markdown: /api/v1/compare/claude-haiku-5-5-low/gpt-5-6-luna-high?format=md · llms.txt · agent skill