Model comparison
Kimi K3 vs Pixtral 12B
Kimi K3 has enough public results to be ranked (#12); Pixtral 12B does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
Mistral AISummary
- The widest gap is in multimodal, where Kimi K3 leads 38.4 to 23.4.
- Pixtral 12B is cheaper at $0.15 / $0.15 per million input/output tokens, against $3 / $15 for Kimi K3.
- Kimi K3 accepts more context: 1.05M tokens versus 128K.
Side by side
| Kimi K3 | Pixtral 12B | |
|---|---|---|
| Provider | Moonshot AI | Mistral AI |
| Noometry Index | 59.5 | 30.8 |
| Released | 2026-07-16 | 2024-09-01 |
| Weights | Open | Open |
| Context window | 1.05M | 128K |
| Max output | 1.05M | 128K |
| Input $ / M tokens | $3 | $0.15 |
| Output $ / M tokens | $15 | $0.15 |
| Results tracked | 53 | 2 |
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Category by category
Coding Not comparable
Kimi K3: 60.6 (#8), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| DeepSWE | 68.5% | — |
| FrontierCode | 44.2% | — |
| LMArena WebDev | 1659 | — |
| FrontierSWE | 25.9% | — |
| SciCode | 59.5% | — |
| WeirdML | 82.6% | — |
| LMArena Coding | 1509 | — |
| ALE-Bench | 1,524 | — |
Agentic & Tool Use Not comparable
Kimi K3: 41.8 (#19), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| APEX-Agents | 50.6% | — |
| τ²-bench Banking | 37.1% | — |
| PostTrainBench | 32% | — |
| GBAEval | 48.3% | — |
| GDP.pdf | 19% | — |
| Vending-Bench 2 | 5,165 | — |
Reasoning Not comparable
Kimi K3: 63.0 (#15), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| ARC-AGI-2 | 60.4% | — |
| SimpleBench | 60.7% | — |
| NYT Connections (extended) | 93.6% | — |
| ARC-AGI-1 | 94.5% | — |
| CritPt | 23.4% | — |
| Chess Puzzles | 39% | — |
| LMArena Hard Prompts | 1495 | — |
| Mystery Game Puzzles | 26% | — |
| DTBench | 91.2% | — |
| LMCA | 52.7% | — |
| Surface Evolver Bench | 95% | — |
| Epoch Capabilities Index | 157.68 | — |
| ForecastBench | 61.1 | — |
Math Not comparable
Kimi K3: 74.0 (#13), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| FrontierMath (Tiers 1-3) | 72.2% | — |
| FrontierMath Tier 4 | 39% | — |
| MathArena Final-Answer Competitions | 87.8% | — |
| OTIS Mock AIME 2024-2025 | 97.2% | — |
| ProofBench | 87% | — |
| LMArena Math | 1493 | — |
Knowledge Not comparable
Kimi K3: 63.2 (#19), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| GPQA Diamond | 93.1% | — |
| SimpleQA Verified | 50.6% | — |
| LMArena Expert | 1520 | — |
Multimodal Kimi K3 leads
Kimi K3: 38.4 (#58), Pixtral 12B: 23.4 (#122)
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| LMArena Vision | — | 1008 |
| GeoBench | — | 37% |
| Blueprint-Bench 2 | 29.5% | — |
| Furniture Assembly | 34.2% | — |
Multilingual Not comparable
Kimi K3: 56.5 (#20), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| LMArena Non-English | 1466 | — |
| LMArena Chinese | 1528 | — |
| LMArena French | 1488 | — |
| LMArena German | 1474 | — |
| LMArena Japanese | 1492 | — |
| LMArena Korean | 1465 | — |
| LMArena Russian | 1481 | — |
| LMArena Spanish | 1478 | — |
Instruction Following Not comparable
Kimi K3: 77.8 (#13), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| LMArena Instruction Following | 1481 | — |
Long Context Not comparable
Kimi K3: 45.8 (#27), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| LMArena Longer Query | 1494 | — |
Writing & Preference Not comparable
Kimi K3: 76.7 (#4), Pixtral 12B: —
| Benchmark | Kimi K3 | Pixtral 12B |
|---|---|---|
| LMArena Text | 1476 | — |
| LMArena Creative Writing | 1452 | — |
| EQ-Bench Creative Writing | 2082 | — |
| EQ-Bench 4 | 1339 | — |
| LMArena Multi-Turn | 1488 | — |
Frequently asked questions
Is Kimi K3 better than Pixtral 12B?
Kimi K3 has enough public results to be ranked (#12); Pixtral 12B does not yet, so treat this comparison as directional.
Which is cheaper, Kimi K3 or Pixtral 12B?
Pixtral 12B is cheaper. It lists at $0.15 per million input tokens and $0.15 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 128K.
How many benchmarks do Kimi K3 and Pixtral 12B share?
0 benchmarks have published results for both models. Kimi K3 has 53 scored results on Noometry and Pixtral 12B has 2.