Model comparison
Kimi K2 Thinking Turbo vs Qwen3.5 Plus
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 42.3 on the Noometry Index.
Last verified . 3 shared benchmarks.
Alibaba (Qwen)Summary
- They share 3 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 2 categories and Qwen3.5 Plus in 2 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Kimi K2 Thinking Turbo leads 50.9 to 46.0.
- Kimi K2 Thinking Turbo has downloadable open weights; the other is API-only.
Side by side
| Kimi K2 Thinking Turbo | Qwen3.5 Plus | |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 45.4 | 42.3 |
| Released | 2025-11-06 | 2026-02-16 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 21 | 15 |
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Category by category
Coding Not comparable
Kimi K2 Thinking Turbo: 38.1 (#166), Qwen3.5 Plus: —
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| LMArena WebDev | 1322 | — |
| LMArena Coding | 1454 | — |
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Kimi K2 Thinking Turbo: —, Qwen3.5 Plus: —
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Too close to call
Kimi K2 Thinking Turbo: 31.4 (#72), Qwen3.5 Plus: 32.0 (#67)
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | 20% | 22% |
| LMArena Hard Prompts | 1428 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |
Math Qwen3.5 Plus leads
Kimi K2 Thinking Turbo: 45.5 (#62), Qwen3.5 Plus: 47.9 (#55)
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 83.1% | 86.7% |
| LMArena Math | 1429 | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 50.9 (#64), Qwen3.5 Plus: 46.0 (#78)
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 84.2% | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1439 | — |
Multilingual Not comparable
Kimi K2 Thinking Turbo: 51.6 (#104), Qwen3.5 Plus: —
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1398 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1425 | — |
| LMArena German | 1390 | — |
| LMArena Japanese | 1356 | — |
| LMArena Korean | 1329 | — |
| LMArena Russian | 1390 | — |
| LMArena Spanish | 1407 | — |
Instruction Following Not comparable
Kimi K2 Thinking Turbo: 74.2 (#103), Qwen3.5 Plus: —
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1403 | — |
Long Context Too close to call
Kimi K2 Thinking Turbo: 43.2 (#99), Qwen3.5 Plus: 42.9 (#109)
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1415 | — |
Writing & Preference Not comparable
Kimi K2 Thinking Turbo: 60.2 (#99), Qwen3.5 Plus: —
| Benchmark | Kimi K2 Thinking Turbo | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1415 | — |
| LMArena Creative Writing | 1373 | — |
| LMArena Multi-Turn | 1414 | — |
Frequently asked questions
Is Kimi K2 Thinking Turbo better than Qwen3.5 Plus?
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.4 to 42.3 on the Noometry Index.
How many benchmarks do Kimi K2 Thinking Turbo and Qwen3.5 Plus share?
3 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Qwen3.5 Plus has 15.