Claude 4.5 Haiku (Reasoning) vs Claude Opus 5.5 (High, Default Fallback)
Which is better for the money: Claude 4.5 Haiku (Reasoning) by Anthropic or Claude Opus 5.5 (High, Default Fallback) by Anthropic? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Depends on your budget
Claude Opus 5.5 (High, Default Fallback) scores 36.7 points higher (53.6 vs 16.9) but costs 3.7× as much to run the benchmark ($2172 vs $594; flagship vs premium cost classes). They are not alternatives at one budget: pick Claude Opus 5.5 (High, Default Fallback) when you need intelligence above 16.9, and Claude 4.5 Haiku (Reasoning) when 16.9 is enough.
| Metric | Claude 4.5 Haiku (Reasoning) | Claude Opus 5.5 (High, Default Fallback) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 16.9 | 53.6 | +217.2% Claude Opus 5.5 (High… is 3.2× more intelligent |
| Total AA cost (lower is better) | $594.08 | $2,172.43 | +265.7% Claude Opus 5.5 (High… is 3.7× more expensive |
| End-to-end time (lower is better) | 23.18s | 33.81s | +45.9% Claude Opus 5.5 (High… is 45.9% slower |
| Price per 1M tokens (in / out) | $1.00 / $5.00 | $4.00 / $20.0 | |
| Input modalities | Text, Image | Text, Image |
Claude Opus 5.5 (High, Default Fallback) vs Claude 4.5 Haiku (Reasoning): 217.2% more intelligence, 265.7% more cost to run the AA benchmark, and 45.9% slower end-to-end.
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.
- Claude Opus 5.5 (High, Default Fallback) is on today's frontier: nothing is both smarter and cheaper.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-4-5-haiku-reasoning/claude-opus-5-5-high · Markdown: /api/v1/compare/claude-4-5-haiku-reasoning/claude-opus-5-5-high?format=md · llms.txt · agent skill