Compare / head-to-head
Claude Opus 4.1vsMistral Medium 3.5
Mistral Medium 3.5 leads 1 of 1 shared benchmark. Mistral Medium 3.5 is 10x cheaper per token. Mistral Medium 3.5 has the larger context window (256K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 1
Mistral Medium 3.5 leads
Cheaper per token
Mistral Medium 3.5
10x cheaper, input + output
Larger context
Mistral Medium 3.5
256K tokens
Provider uptime (30d)
100% · 100%
Anthropic · Mistral AI
Claude Opus 4.1
Anthropic · released 2025-08-05
textvision
Mistral Medium 3.5
Mistral AI · released 2026-04-28
textvision
Quality
Benchmark matrix
1 shared · 5 only Claude Opus 4.1 · 2 only Mistral Medium 3.5| Benchmark | Claude Opus 4.1 | Mistral Medium 3.5 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| SWE-bench Verified | 74.5% ↗ | 77.6% ↗ | -3.1 pt | Mistral Medium 3.5 |
| Only Claude Opus 4.1 reports · 5 | ||||
| GPQA Diamond | 77.3% ↗epoch | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 2.4% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 12.6% ↗epoch | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 68.9% ↗epoch | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 73.3% ↗epoch | not reported | — | — |
| Only Mistral Medium 3.5 reports · 2 | ||||
| LMArena Elo | not reported | 1420.6 ↗ | — | — |
| Tau3 Telecom | not reported | 91.4 ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Opus 4.1 minus Mistral Medium 3.5 in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Opus 4.1 | Mistral Medium 3.5 | Edge |
|---|---|---|---|
| Context window | 200K tokens | 256K tokens | Mistral Medium 3.5 |
| Max output | 32K tokens | — | — |
| Input price / 1M | $15 ↗ | $1.5 ↗ | Mistral Medium 3.5 |
| Output price / 1M | $75 ↗ | $7.5 ↗ | Mistral Medium 3.5 |
| Cached input / 1M | $1.5 ↗ | $0.15 ↗ | Mistral Medium 3.5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $90 | $9 | Mistral Medium 3.5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-08-05 | 2026-04-28 | — |
| Cited benchmark scores | 6 | 3 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Claude Opus 4.1 vs …
Models sharing the most benchmarksMore matchups
Mistral Medium 3.5 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Claude Opus 4.1 and Mistral Medium 3.5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.