Model comparison
Kimi K3 vs Mistral Small 3.2
Kimi K3 is the stronger model overall, scoring 59.5 to 31.2 on the Noometry Index. Mistral Small 3.2 costs 45× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.
Last verified . 5 shared benchmarks.
Mistral AISummary
- They share 5 benchmarks with published results for both. Kimi K3 scores higher in 4 categories and Mistral Small 3.2 in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K3 leads 74.2 to 26.3.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 97.2% for Kimi K3 and 30.3% for Mistral Small 3.2.
- Mistral Small 3.2 is cheaper at $0.0938 / $0.25 per million input/output tokens, against $3 / $15 for Kimi K3.
- Kimi K3 accepts more context: 1.05M tokens versus 256K.
Side by side
| Kimi K3 | Mistral Small 3.2 | |
|---|---|---|
| Provider | Moonshot AI | Mistral AI |
| Noometry Index | 59.5 | 31.2 |
| Released | 2026-07-16 | 2025-06-20 |
| Weights | Open | Open |
| Context window | 1.05M | 256K |
| Max output | 1.05M | 16K |
| Input $ / M tokens | $3 | $0.0938 |
| Output $ / M tokens | $15 | $0.25 |
| Results tracked | 53 | 6 |
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Category by category
Coding Not comparable
Kimi K3: 61.0 (#10), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| DeepSWE | 68.5% | — |
| FrontierCode | 44.2% | — |
| LMArena WebDev | 1654 | — |
| FrontierSWE | 25.9% | — |
| SciCode | 59.5% | — |
| WeirdML | 82.6% | — |
| LMArena Coding | 1508 | — |
| ALE-Bench | 1,524 | — |
Agentic & Tool Use Not comparable
Kimi K3: 41.8 (#20), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| APEX-Agents | 50.6% | — |
| τ²-bench Banking | 37.1% | — |
| PostTrainBench | 32% | — |
| GBAEval | 48.3% | — |
| GDP.pdf | 19% | — |
| Vending-Bench 2 | 5,165 | — |
Reasoning Kimi K3 leads
Kimi K3: 63.0 (#17), Mistral Small 3.2: 18.1 (#287)
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| Chess Puzzles | 39% | 1% |
| Epoch Capabilities Index | 157.45 | 131.74 |
| ARC-AGI-2 | 60.4% | — |
| SimpleBench | 60.7% | — |
| Kagi LLM Benchmark | — | 40.4% |
| NYT Connections (extended) | 93.6% | — |
| ARC-AGI-1 | 94.5% | — |
| CritPt | 23.4% | — |
| LMArena Hard Prompts | 1496 | — |
| Mystery Game Puzzles | 26% | — |
| DTBench | 91.2% | — |
| LMCA | 52.7% | — |
| Surface Evolver Bench | 95% | — |
| ForecastBench | 61.1 | — |
Math Kimi K3 leads
Kimi K3: 74.2 (#16), Mistral Small 3.2: 26.3 (#260)
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 97.2% | 30.3% |
| FrontierMath (Tiers 1-3) | 72.2% | — |
| FrontierMath Tier 4 | 39% | — |
| MathArena Final-Answer Competitions | 87.8% | — |
| ProofBench | 87% | — |
| LMArena Math | 1491 | — |
Knowledge Kimi K3 leads
Kimi K3: 63.2 (#21), Mistral Small 3.2: 26.7 (#256)
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| GPQA Diamond | 93.1% | 49.1% |
| SimpleQA Verified | 50.6% | — |
| LMArena Expert | 1521 | — |
Multimodal Not comparable
Kimi K3: 37.8 (#70), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| Blueprint-Bench 2 | 29.5% | — |
| Furniture Assembly | 34.2% | — |
Multilingual Not comparable
Kimi K3: 56.3 (#21), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| LMArena Non-English | 1466 | — |
| LMArena Chinese | 1529 | — |
| LMArena French | 1491 | — |
| LMArena German | 1488 | — |
| LMArena Japanese | 1487 | — |
| LMArena Korean | 1458 | — |
| LMArena Russian | 1482 | — |
| LMArena Spanish | 1472 | — |
Instruction Following Not comparable
Kimi K3: 77.7 (#14), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| LMArena Instruction Following | 1483 | — |
Long Context Not comparable
Kimi K3: 45.8 (#29), Mistral Small 3.2: —
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| LMArena Longer Query | 1494 | — |
Writing & Preference Kimi K3 leads
Kimi K3: 76.6 (#4), Mistral Small 3.2: 45.0 (#224)
| Benchmark | Kimi K3 | Mistral Small 3.2 |
|---|---|---|
| EQ-Bench Creative Writing | 2082 | 1255 |
| LMArena Text | 1476 | — |
| LMArena Creative Writing | 1454 | — |
| EQ-Bench 4 | 1339 | — |
| LMArena Multi-Turn | 1488 | — |
Frequently asked questions
Is Kimi K3 better than Mistral Small 3.2?
Kimi K3 is the stronger model overall, scoring 59.5 to 31.2 on the Noometry Index. Mistral Small 3.2 costs 45× less per token, which makes it the better buy when Kimi K3's lead doesn't matter for your workload.
Which is cheaper, Kimi K3 or Mistral Small 3.2?
Mistral Small 3.2 is cheaper. It lists at $0.0938 per million input tokens and $0.25 per million output tokens; Kimi K3 lists at $3 and $15.
Which has the bigger context window?
Kimi K3 does, with 1.05M tokens against 256K.
How many benchmarks do Kimi K3 and Mistral Small 3.2 share?
5 benchmarks have published results for both models. Kimi K3 has 53 scored results on Noometry and Mistral Small 3.2 has 6.