Claude Opus 5.5 (Low, Default Fallback) vs Mistral Medium 3.5
Which is better for the money: Claude Opus 5.5 (Low, Default Fallback) by Anthropic or Mistral Medium 3.5 by Mistral? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-25.
Clear winner
Verdict
Pick Claude Opus 5.5 (Low, Default Fallback)
Mistral Medium 3.5 vs Claude Opus 5.5 (Low, Default Fallback): 66.4% less intelligence, 46.9% more cost to run the AA benchmark, and 43.0% slower end-to-end.
| Metric | Claude Opus 5.5 (Low, Default Fallback) | Mistral Medium 3.5 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 42.3 | 14.2 | −66.4% Mistral Medium 3.5 is 66.4% less intelligent |
| Total AA cost (lower is better) | $860.33 | $1,263.80 | +46.9% Mistral Medium 3.5 is 46.9% more expensive |
| End-to-end time (lower is better) | 12.48s | 17.85s | +43.0% Mistral Medium 3.5 is 43.0% slower |
| Price per 1M tokens (in / out) | $4.00 / $20.0 | $1.50 / $7.50 | |
| Input modalities | Text, Image | Text, Image |
Today's Pareto frontier
Against the frontier
- Claude Opus 5.5 (Low, Default Fallback) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- Mistral Medium 3.5 is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Claude Opus 5.5 (Low, Default Fallback)Mistral Medium 3.5Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
Compare something else
Agents:
Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-opus-5-5-low/mistral-medium-3-5 · Markdown: /api/v1/compare/claude-opus-5-5-low/mistral-medium-3-5?format=md · llms.txt · agent skill