Claude Opus 5.5 (Medium, Default Fallback) vs DeepSeek V4 Pro 0813 (Non-reasoning)
Which is better for the money: Claude Opus 5.5 (Medium, Default Fallback) by Anthropic or DeepSeek V4 Pro 0813 (Non-reasoning) by DeepSeek? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Depends on your budget
Claude Opus 5.5 (Medium, Default Fallba… scores 30.8 points higher (51.2 vs 20.4) but costs 3.6× as much to run the benchmark ($1627 vs $451; premium vs mid-range cost classes). They are not alternatives at one budget: pick Claude Opus 5.5 (Medium, Default Fallba… when you need intelligence above 20.4, and DeepSeek V4 Pro 0813 (Non-reasoning) when 20.4 is enough.
| Metric | Claude Opus 5.5 (Medium, Default Fallback) | DeepSeek V4 Pro 0813 (Non-reasoning) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 51.2 | 20.4 | −60.2% DeepSeek V4 Pro 0813 … is 60.2% less intelligent |
| Total AA cost (lower is better) | $1,626.81 | $450.76 | −72.3% DeepSeek V4 Pro 0813 … is 72.3% cheaper |
| End-to-end time (lower is better) | 21.78s | 6.74s | −69.1% DeepSeek V4 Pro 0813 … is 69.1% faster |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.32 / $3.96 | |
| Input modalities | Text, Image | Text |
DeepSeek V4 Pro 0813 (Non-reasoning) vs Claude Opus 5.5 (Medium, Default Fallback): 60.2% less intelligence, 72.3% less cost to run the AA benchmark, and 69.1% faster end-to-end.
Against the frontier
- Claude Opus 5.5 (Medium, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
- DeepSeek V4 Pro 0813 (Non-reasoning) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Medium) scores 47.80 for $361.
Compare something else
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-medium/deepseek-v4-pro-non-reasoning · Markdown: /api/v1/compare/claude-opus-5-5-medium/deepseek-v4-pro-non-reasoning?format=md · llms.txt · agent skill