Model comparison
Kimi K2.6 vs o1-mini
Kimi K2.6 is the stronger model overall, scoring 47.7 to 34.0 on the Noometry Index.
Last verified . 22 shared benchmarks.
Summary
- They share 22 benchmarks with published results for both. Kimi K2.6 scores higher in 8 categories and o1-mini in 1 category; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K2.6 leads 40.5 to 8.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 96.1% for Kimi K2.6 and 46.9% for o1-mini.
- Kimi K2.6 has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.6 | o1-mini | |
|---|---|---|
| Provider | Moonshot AI | OpenAI |
| Noometry Index | 47.7 | 34.0 |
| Released | 2026-04-20 | 2024-09-12 |
| Weights | Open | Proprietary |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.95 | — |
| Output $ / M tokens | $4 | — |
| Results tracked | 51 | 39 |
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Category by category
Coding Kimi K2.6 leads
Kimi K2.6: 50.7 (#43), o1-mini: 35.5 (#224)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| WeirdML | 55.9% | 36.3% |
| LMArena Coding | 1488 | 1362 |
| SWE-bench Verified | 76.7% | — |
| Aider Polyglot | — | 32.9% |
| LMArena WebDev | 1509 | — |
| SciCode | 53.5% | — |
| LiveBench Coding | — | 48% |
| ALE-Bench | 1,093 | — |
| HumanEval+ | — | 89% |
| MBPP+ | — | 78.8% |
Agentic & Tool Use o1-mini leads
Kimi K2.6: 21.9 (#137), o1-mini: 24.6 (#118)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| OSWorld 2.0 | 4.6% | — |
| Cybench | — | 10% |
| ExploitBench | 18.4% | — |
| GBAEval | 0.9% | — |
| GDP.pdf | 12% | — |
| Vending-Bench 2 | 6,205 | — |
Reasoning Kimi K2.6 leads
Kimi K2.6: 40.5 (#55), o1-mini: 8.8 (#346)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Hard Prompts | 1470 | 1333 |
| Epoch Capabilities Index | 151.05 | 135.82 |
| ARC-AGI-2 | — | 0.8% |
| SimpleBench | — | 18.1% |
| NYT Connections (extended) | 87.2% | — |
| ARC-AGI-1 | — | 14% |
| CritPt | 8% | — |
| Chess Puzzles | 26% | — |
| EBR-Bench | 2.4% | — |
| LiveBench Reasoning | — | 72.3% |
| Mystery Game Puzzles | 18% | — |
| DTBench | 90.9% | — |
| LiveBench Data Analysis | — | 57.9% |
| LMCA | 37.3% | — |
| LiveBench | — | 57.8% |
Math Kimi K2.6 leads
Kimi K2.6: 57.0 (#41), o1-mini: 35.4 (#186)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 96.1% | 46.9% |
| LMArena Math | 1475 | 1358 |
| FrontierMath (Feb 2025 set) | 39% | 1.7% |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 25.6% | — |
| MathArena Final-Answer Competitions | 72.9% | — |
| ProofBench | 16% | — |
| LiveBench Math | — | 62% |
| MATH Level 5 | — | 89.2% |
| FrontierMath Tier 4 (v1) | 14.6% | — |
Knowledge Kimi K2.6 leads
Kimi K2.6: 54.0 (#54), o1-mini: 34.9 (#192)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| GPQA Diamond | 90.8% | 62.4% |
| LMArena Expert | 1491 | 1316 |
| SimpleQA Verified | 34.9% | — |
| Confabulations | — | 18.6% |
| Vectara Hallucination Rate | 10.8% | — |
Multimodal Not comparable
Kimi K2.6: 31.6 (#103), o1-mini: —
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Vision | 1283 | — |
| Blueprint-Bench 2 | 3.9% | — |
| Furniture Assembly | 21.7% | — |
| LMArena Document | 1451 | — |
Multilingual Kimi K2.6 leads
Kimi K2.6: 54.9 (#37), o1-mini: 43.6 (#182)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Non-English | 1446 | 1289 |
| LMArena Chinese | 1521 | 1314 |
| LMArena French | 1471 | 1293 |
| LMArena German | 1450 | 1278 |
| LMArena Japanese | 1443 | 1245 |
| LMArena Korean | 1427 | 1223 |
| LMArena Russian | 1446 | 1283 |
| LMArena Spanish | 1464 | 1303 |
Instruction Following Kimi K2.6 leads
Kimi K2.6: 76.3 (#43), o1-mini: 66.7 (#206)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Instruction Following | 1451 | 1304 |
| LiveBench Instruction Following | — | 65.4% |
Long Context Kimi K2.6 leads
Kimi K2.6: 44.9 (#52), o1-mini: 40.1 (#161)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Longer Query | 1468 | 1320 |
Writing & Preference Kimi K2.6 leads
Kimi K2.6: 68.5 (#26), o1-mini: 48.4 (#202)
| Benchmark | Kimi K2.6 | o1-mini |
|---|---|---|
| LMArena Text | 1455 | 1317 |
| LMArena Creative Writing | 1434 | 1244 |
| LMArena Multi-Turn | 1453 | 1314 |
| Short-Story Creative Writing | — | 64.9% |
| EQ-Bench Creative Writing | 1725 | — |
| EQ-Bench 4 | 1202 | — |
| LiveBench Language | — | 40.9% |
Frequently asked questions
Is Kimi K2.6 better than o1-mini?
Kimi K2.6 is the stronger model overall, scoring 47.7 to 34.0 on the Noometry Index.
Is Kimi K2.6 or o1-mini better for coding?
Kimi K2.6 scores higher on coding benchmarks: 50.7 versus 35.5 in the Noometry coding category.
How many benchmarks do Kimi K2.6 and o1-mini share?
22 benchmarks have published results for both models. Kimi K2.6 has 51 scored results on Noometry and o1-mini has 39.