Compare / head-to-head
GPT-5.2vsMistral Medium 3.5
GPT-5.2 and Mistral Medium 3.5 split their 2 shared benchmarks evenly. Mistral Medium 3.5 is 1.8x cheaper per token. GPT-5.2 has the larger context window (400K tokens).
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
1 – 1
even split
Cheaper per token
Mistral Medium 3.5
1.8x cheaper, input + output
Larger context
GPT-5.2
400K tokens
Provider uptime (30d)
94.5763% · 100%
OpenAI · Mistral AI
GPT-5.2
OpenAI · released 2025-12-11
textvision
Mistral Medium 3.5
Mistral AI · released 2026-04-28
textvision
Quality
Benchmark matrix
2 shared · 12 only GPT-5.2 · 1 only Mistral Medium 3.5| Benchmark | GPT-5.2 | Mistral Medium 3.5 | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 2 | ||||
| SWE-bench Verified | 80% ↗ | 77.6% ↗ | +2.4 pt | GPT-5.2 |
| LMArena Elo | 1412.4 ↗ | 1420.6 ↗ | -8.2 | Mistral Medium 3.5 |
| Only GPT-5.2 reports · 12 | ||||
| GPQA Diamond | 92.4% ↗ | not reported | — | — |
| AIME 2025 | 100% ↗ | not reported | — | — |
| AIME 2026 | 98.3% ↗matharena | not reported | — | — |
| ARC-AGI-1 (Verified) | 86.2% ↗ | not reported | — | — |
| ARC-AGI-2 (Verified) | 52.9% ↗ | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 31.7% ↗epoch | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 67.4% ↗epoch | not reported | — | — |
| GDPval (wins or ties) | 70.9% ↗ | not reported | — | — |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 96.1% ↗epoch | not reported | — | — |
| SimpleQA Verified | 37.1% ↗epoch | not reported | — | — |
| SWE-Bench Pro | 55.6% ↗ | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 73.8% ↗epoch | not reported | — | — |
| Only Mistral Medium 3.5 reports · 1 | ||||
| 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 GPT-5.2 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 | GPT-5.2 | Mistral Medium 3.5 | Edge |
|---|---|---|---|
| Context window | 400K tokens | 256K tokens | GPT-5.2 |
| Max output | 128K tokens | — | — |
| Input price / 1M | $1.75 ↗ | $1.5 ↗ | Mistral Medium 3.5 |
| Output price / 1M | $14 ↗ | $7.5 ↗ | Mistral Medium 3.5 |
| Cached input / 1M | $0.175 ↗ | $0.15 ↗ | Mistral Medium 3.5 |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $15.75 | $9 | Mistral Medium 3.5 |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-12-11 | 2026-04-28 | — |
| Cited benchmark scores | 16 | 3 | — |
Reliability
Provider status
Last 60 days · refreshed daily on this page · live on /statusMore matchups
GPT-5.2 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 GPT-5.2 and Mistral Medium 3.5 on your own prompts with Respan evals, or route to either through one gateway key with automatic failover.