Claude 4.5 Sonnet (Reasoning) vs Claude Haiku 5.5 (Low)
Which is better for the money: Claude 4.5 Sonnet (Reasoning) by Anthropic or Claude Haiku 5.5 (Low) by Anthropic? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Clear winner
Verdict
Pick Claude Haiku 5.5 (Low)
Claude Haiku 5.5 (Low) vs Claude 4.5 Sonnet (Reasoning): 42.5% more intelligence, 97.7% less cost to run the AA benchmark, and 48.7% faster end-to-end.
| Metric | Claude 4.5 Sonnet (Reasoning) | Claude Haiku 5.5 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.7 | 29.5 | +42.5% Claude Haiku 5.5 (Low) is 42.5% more intelligent |
| Total AA cost (lower is better) | $1,501.22 | $34.31 | −97.7% Claude Haiku 5.5 (Low) is 97.7% cheaper |
| End-to-end time (lower is better) | 21.71s | 11.13s | −48.7% Claude Haiku 5.5 (Low) is 48.7% faster |
| Price per 1M tokens (in / out) | $3.00 / $15.0 | $0.10 / $0.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- Claude 4.5 Sonnet (Reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- 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.
Claude 4.5 Sonnet (Reasoning)Claude Haiku 5.5 (Low)Today's Pareto frontierEvery other model
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-4-5-sonnet-thinking/claude-haiku-5-5-low · Markdown: /api/v1/compare/claude-4-5-sonnet-thinking/claude-haiku-5-5-low?format=md · llms.txt · agent skill