Claude 4.5 Haiku (Reasoning) vs GPT-5.6 Luna (Xhigh)
Which is better for the money: Claude 4.5 Haiku (Reasoning) by Anthropic or GPT-5.6 Luna (Xhigh) by OpenAI? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-27.
Clear winner
Verdict
Pick GPT-5.6 Luna (Xhigh)
GPT-5.6 Luna (Xhigh) vs Claude 4.5 Haiku (Reasoning): 104.7% more intelligence, 67.2% less cost to run the AA benchmark, and 65.7% slower end-to-end.
| Metric | Claude 4.5 Haiku (Reasoning) | GPT-5.6 Luna (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.9 | 34.6 | +104.7% GPT-5.6 Luna (Xhigh) is 2.0× more intelligent |
| Total AA cost (lower is better) | $546.96 | $179.33 | −67.2% GPT-5.6 Luna (Xhigh) is 67.2% cheaper |
| End-to-end time (lower is better) | 23.65s | 39.18s | +65.7% GPT-5.6 Luna (Xhigh) is 65.7% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $0.20 / $1.20 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- Claude 4.5 Haiku (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (High) scores 50.20 for $521.
- GPT-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Terra (Medium) scores 41.30 for $175.
Claude 4.5 Haiku (Reasoning)GPT-5.6 Luna (Xhigh)Today's Pareto frontierEvery other model
Matchup
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