Model comparison
GPT-6 Sol vs Kimi K2 Thinking Turbo
GPT-6 Sol is the stronger model overall, scoring 49.2 to 45.4 on the Noometry Index.
Last verified . 14 shared benchmarks.
Summary
- They share 14 benchmarks with published results for both. GPT-6 Sol scores higher in 4 categories and Kimi K2 Thinking Turbo in 4 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in coding, where GPT-6 Sol leads 59.6 to 38.1.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| GPT-6 Sol | Kimi K2 Thinking Turbo | |
|---|---|---|
| Provider | OpenAI | Moonshot AI |
| Noometry Index | 49.2 | 45.4 |
| Released | 2026-09-22 | 2025-11-06 |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 128K | — |
| Input $ / M tokens | $2 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 22 | 21 |
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Category by category
Coding GPT-6 Sol leads
GPT-6 Sol: 59.6 (#11), Kimi K2 Thinking Turbo: 38.1 (#166)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena WebDev | 1692 | 1322 |
| LMArena Coding | 1453 | 1454 |
| DeepSWE | 68.8% | — |
| FrontierCode | 49.3% | — |
Agentic & Tool Use Not comparable
GPT-6 Sol: 33.5 (#49), Kimi K2 Thinking Turbo: —
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| GDP.pdf | 28% | — |
Reasoning GPT-6 Sol leads
GPT-6 Sol: 49.3 (#34), Kimi K2 Thinking Turbo: 31.4 (#72)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Hard Prompts | 1420 | 1428 |
| NYT Connections (extended) | 90.1% | — |
| Chess Puzzles | — | 20% |
| EBR-Bench | 53.3% | — |
Math Kimi K2 Thinking Turbo leads
GPT-6 Sol: 35.8 (#135), Kimi K2 Thinking Turbo: 45.5 (#62)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Math | 1404 | 1429 |
| OTIS Mock AIME 2024-2025 | — | 83.1% |
Knowledge Kimi K2 Thinking Turbo leads
GPT-6 Sol: 43.0 (#87), Kimi K2 Thinking Turbo: 50.9 (#64)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Expert | 1449 | 1439 |
| GPQA Diamond | — | 84.2% |
| Vectara Hallucination Rate | 6.5% | — |
Multimodal Not comparable
GPT-6 Sol: 47.6 (#9), Kimi K2 Thinking Turbo: —
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| Furniture Assembly | 58.3% | — |
Multilingual Too close to call
GPT-6 Sol: 51.0 (#113), Kimi K2 Thinking Turbo: 51.6 (#104)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Non-English | 1389 | 1398 |
| LMArena Chinese | 1416 | 1457 |
| LMArena Russian | 1407 | 1390 |
| LMArena Spanish | 1377 | 1407 |
| LMArena French | — | 1425 |
| LMArena German | — | 1390 |
| LMArena Japanese | — | 1356 |
| LMArena Korean | — | 1329 |
Instruction Following Too close to call
GPT-6 Sol: 74.4 (#97), Kimi K2 Thinking Turbo: 74.2 (#103)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Instruction Following | 1406 | 1403 |
Long Context Too close to call
GPT-6 Sol: 43.2 (#100), Kimi K2 Thinking Turbo: 43.2 (#99)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Longer Query | 1415 | 1415 |
Writing & Preference GPT-6 Sol leads
GPT-6 Sol: 72.3 (#15), Kimi K2 Thinking Turbo: 60.2 (#99)
| Benchmark | GPT-6 Sol | Kimi K2 Thinking Turbo |
|---|---|---|
| LMArena Text | 1396 | 1415 |
| LMArena Creative Writing | 1392 | 1373 |
| LMArena Multi-Turn | 1405 | 1414 |
| EQ-Bench Creative Writing | 2125 | — |
Frequently asked questions
Is GPT-6 Sol better than Kimi K2 Thinking Turbo?
GPT-6 Sol is the stronger model overall, scoring 49.2 to 45.4 on the Noometry Index.
Is GPT-6 Sol or Kimi K2 Thinking Turbo better for coding?
GPT-6 Sol scores higher on coding benchmarks: 59.6 versus 38.1 in the Noometry coding category.
How many benchmarks do GPT-6 Sol and Kimi K2 Thinking Turbo share?
14 benchmarks have published results for both models. GPT-6 Sol has 22 scored results on Noometry and Kimi K2 Thinking Turbo has 21.