Compare / head-to-head
Mistral Small 4vso3
o3 leads 1 of 1 shared benchmark. Mistral Small 4 is 13.3x cheaper per token. Mistral Small 4 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
o3 leads
Cheaper per token
Mistral Small 4
13.3x cheaper, input + output
Larger context
Mistral Small 4
256K tokens
Provider uptime (30d)
100% · 95.3079%
Mistral AI · OpenAI
Mistral Small 4
Mistral AI · released 2026-03-16
textvision
Quality
Benchmark matrix
1 shared · 2 only Mistral Small 4 · 6 only o3| Benchmark | Mistral Small 4 | o3 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 1 | ||||
| GPQA Diamond | 71.2% ↗ | 81.8% ↗epoch | -10.6 pt | o3 |
| Only Mistral Small 4 reports · 2 | ||||
| MMLU-Pro | 78% ↗ | not reported | — | — |
| Artificial Analysis Long Context Reasoning | 0.72 ↗ | not reported | — | — |
| Only o3 reports · 6 | ||||
| SWE-bench Verified | not reported | 69.1% ↗ | — | — |
| AIME 2025 | not reported | 89.2% ↗matharena ⚠ | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | not reported | 33.3% ↗epoch | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | not reported | 84.4% ↗epoch | — | — |
| SimpleQA Verified | not reported | 49.4% ↗epoch | — | — |
| SWE-bench Verified (Epoch AI run) | not reported | 62.3% ↗epoch | — | — |
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 Mistral Small 4 minus o3 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 | Mistral Small 4 | o3 | Edge |
|---|---|---|---|
| Context window | 256K tokens | 200K tokens | Mistral Small 4 |
| Max output | — | 100K tokens | — |
| Input price / 1M | $0.15 ↗ | $2 ↗ | Mistral Small 4 |
| Output price / 1M | $0.6 ↗ | $8 ↗ | Mistral Small 4 |
| Cached input / 1M | $0.015 ↗ | $0.5 ↗ | Mistral Small 4 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $0.75 | $10 | Mistral Small 4 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2026-03-16 | 2025-04-16 | — |
| Cited benchmark scores | 3 | 7 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
Mistral Small 4 vs …
Models sharing the most benchmarksMore matchups
o3 vs …
Models sharing the most benchmarksBuilt by Respan
Which one wins on your data?
Public benchmarks are a starting point. Run Mistral Small 4 and o3 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.