Model comparison
GPT-5.2 vs Mistral Medium
GPT-5.2 is the stronger model overall, scoring 54.1 to 36.3 on the Noometry Index. Mistral Medium costs 1.6× less per token, which makes it the better buy when GPT-5.2's lead doesn't matter for your workload.
Last verified . 30 shared benchmarks.
Mistral AISummary
- They share 30 benchmarks with published results for both. GPT-5.2 scores higher in 10 categories and Mistral Medium in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.2 leads 59.3 to 25.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 96.1% for GPT-5.2 and 32.2% for Mistral Medium.
- Mistral Medium is cheaper at $1.50 / $7.50 per million input/output tokens, against $1.75 / $14 for GPT-5.2.
- GPT-5.2 accepts more context: 400K tokens versus 262K.
- Mistral Medium has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 | Mistral Medium | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Noometry Index | 54.1 | 36.3 |
| Released | 2025-12-11 | 2023-12-11 |
| Weights | Proprietary | Open |
| Context window | 400K | 262K |
| Max output | 128K | 262K |
| Input $ / M tokens | $1.75 | $1.50 |
| Output $ / M tokens | $14 | $7.50 |
| Results tracked | 67 | 36 |
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Category by category
Coding GPT-5.2 leads
GPT-5.2: 51.6 (#37), Mistral Medium: 34.2 (#243)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| WeirdML | 72.2% | 43.7% |
| LMArena Coding | 1447 | 1434 |
| ALE-Bench | 1,294 | 763.98 |
| SWE-bench Verified | 73.8% | — |
| FrontierCode | — | 8% |
| SWE-bench Verified (bash only) | 72.8% | — |
| LMArena WebDev | 1416 | — |
| SWE-bench Multilingual | 66.7% | — |
| SciCode | — | 40.2% |
| GSO | 27.4% | — |
| AlgoTune | 2.05 | — |
Agentic & Tool Use GPT-5.2 leads
GPT-5.2: 40.2 (#24), Mistral Medium: 28.3 (#90)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| Berkeley Function Calling Leaderboard | 55.9% | 37.7% |
| Terminal-Bench | 64.9% | — |
| GDPval | 49.7% | — |
| Remote Labor Index | 2.5% | — |
| τ²-bench Airline | 83% | — |
| τ²-bench Banking | 32.2% | — |
| τ²-bench Retail | 81.6% | — |
| τ²-bench Telecom | 89.7% | — |
| DeepResearch Bench | 41.1% | — |
| LMArena Search | 1207 | — |
| METR Time Horizons | 75.3% | — |
| Vending-Bench 2 | 3,591 | — |
Reasoning GPT-5.2 leads
GPT-5.2: 50.2 (#35), Mistral Medium: 24.0 (#167)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| Kagi LLM Benchmark | 73.3% | 50% |
| LMArena Hard Prompts | 1445 | 1426 |
| DTBench | 90.9% | 75.5% |
| LMCA | 43.9% | 26.1% |
| ARC-AGI-2 | 52.9% | — |
| SimpleBench | 45.8% | — |
| NYT Connections (extended) | 83.6% | — |
| ARC-AGI-1 | 86.2% | — |
| CritPt | — | 0% |
| Chess Puzzles | 49% | — |
| EnigmaEval | 10.4% | — |
| EBR-Bench | 23% | — |
| Mystery Game Puzzles | 23% | — |
| Surface Evolver Bench | — | 26.9% |
| Epoch Capabilities Index | 153.45 | — |
| ForecastBench | 60.1 | — |
Math GPT-5.2 leads
GPT-5.2: 60.0 (#38), Mistral Medium: 28.1 (#245)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 96.1% | 32.2% |
| ProofBench | 15% | 9% |
| LMArena Math | 1440 | 1408 |
| FrontierMath (Feb 2025 set) | 40.7% | 0.3% |
| FrontierMath (Tiers 1-3) | 67.4% | — |
| FrontierMath Tier 4 | 31.7% | — |
| MathArena Final-Answer Competitions | 72% | — |
| MATH Level 5 | — | 81.6% |
| FrontierMath Tier 4 (v1) | 18.8% | — |
Knowledge GPT-5.2 leads
GPT-5.2: 59.3 (#32), Mistral Medium: 25.0 (#265)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| GPQA Diamond | 91.4% | 59.5% |
| Humanity's Last Exam | 27.8% | 4.5% |
| Vectara Hallucination Rate | 8.4% | 22.7% |
| LMArena Expert | 1445 | 1408 |
| SimpleQA Verified | 37.1% | — |
Multimodal GPT-5.2 leads
GPT-5.2: 51.3 (#7), Mistral Medium: 35.3 (#88)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| LMArena Vision | 1268 | 1172 |
| VPCT | 84% | — |
| Furniture Assembly | 38.3% | — |
| LMArena Document | 1405 | — |
Multilingual GPT-5.2 leads
GPT-5.2: 53.4 (#67), Mistral Medium: 52.1 (#91)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| LMArena Non-English | 1425 | 1408 |
| LMArena Chinese | 1460 | 1447 |
| LMArena French | 1455 | 1459 |
| LMArena German | 1448 | 1432 |
| LMArena Japanese | 1420 | 1378 |
| LMArena Korean | 1392 | 1380 |
| LMArena Russian | 1440 | 1411 |
| LMArena Spanish | 1433 | 1433 |
Instruction Following Too close to call
GPT-5.2: 74.7 (#89), Mistral Medium: 73.7 (#116)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| LMArena Instruction Following | 1417 | 1398 |
Long Context GPT-5.2 leads
GPT-5.2: 44.0 (#78), Mistral Medium: 42.9 (#114)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| LMArena Longer Query | 1428 | 1406 |
| CL-bench | 18.2% | — |
Writing & Preference GPT-5.2 leads
GPT-5.2: 66.8 (#32), Mistral Medium: 60.0 (#103)
| Benchmark | GPT-5.2 | Mistral Medium |
|---|---|---|
| LMArena Text | 1439 | 1424 |
| LMArena Creative Writing | 1401 | 1391 |
| LMArena Multi-Turn | 1458 | 1418 |
| Short-Story Creative Writing | — | 77.3% |
| EQ-Bench Creative Writing | 1703 | — |
Frequently asked questions
Is GPT-5.2 better than Mistral Medium?
GPT-5.2 is the stronger model overall, scoring 54.1 to 36.3 on the Noometry Index. Mistral Medium costs 1.6× less per token, which makes it the better buy when GPT-5.2's lead doesn't matter for your workload.
Which is cheaper, GPT-5.2 or Mistral Medium?
Mistral Medium is cheaper. It lists at $1.50 per million input tokens and $7.50 per million output tokens; GPT-5.2 lists at $1.75 and $14.
Is GPT-5.2 or Mistral Medium better for coding?
GPT-5.2 scores higher on coding benchmarks: 51.6 versus 34.2 in the Noometry coding category.
Which has the bigger context window?
GPT-5.2 does, with 400K tokens against 262K.
How many benchmarks do GPT-5.2 and Mistral Medium share?
30 benchmarks have published results for both models. GPT-5.2 has 67 scored results on Noometry and Mistral Medium has 36.