Model comparison
Kimi K2 (Jul 2025) vs Qwen Plus
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 36.7 on the Noometry Index. Qwen Plus costs 1.7× less per token, which makes it the better buy when Kimi K2 (Jul 2025)'s lead doesn't matter for your workload.
Last verified . 15 shared benchmarks.
Alibaba (Qwen)Summary
- They share 15 benchmarks with published results for both. Kimi K2 (Jul 2025) scores higher in 7 categories and Qwen Plus in 1 category; 7 gaps are clear of the uncertainty.
- The widest gap is in math, where Kimi K2 (Jul 2025) leads 40.1 to 22.0.
- Qwen Plus is cheaper at $0.40 / $1.20 per million input/output tokens, against $0.57 / $2.30 for Kimi K2 (Jul 2025).
- Qwen Plus accepts more context: 1M tokens versus 262K.
- Kimi K2 (Jul 2025) has downloadable open weights; the other is API-only.
Side by side
| Kimi K2 (Jul 2025) | Qwen Plus | |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 40.9 | 36.7 |
| Released | 2025-07-12 | 2024-01-25 |
| Weights | Open | Proprietary |
| Context window | 262K | 1M |
| Max output | 262K | 33K |
| Input $ / M tokens | $0.57 | $0.40 |
| Output $ / M tokens | $2.30 | $1.20 |
| Results tracked | 42 | 20 |
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Category by category
Coding Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 43.1 (#83), Qwen Plus: 38.3 (#163)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Coding | 1399 | 1328 |
| SWE-bench Verified (bash only) | 63.4% | — |
| Aider Polyglot | 59.1% | — |
| GSO | 4.9% | — |
| WeirdML | 42.8% | — |
| ALE-Bench | 597.5 | — |
Agentic & Tool Use Not comparable
Kimi K2 (Jul 2025): 32.2 (#59), Qwen Plus: —
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| Terminal-Bench | 35.7% | — |
| Berkeley Function Calling Leaderboard | 59.1% | — |
| METR Time Horizons | 59.2% | — |
Reasoning Qwen Plus leads
Kimi K2 (Jul 2025): 22.7 (#173), Qwen Plus: 27.6 (#101)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| Kagi LLM Benchmark | 64.4% | 63.3% |
| LMArena Hard Prompts | 1384 | 1317 |
| SimpleBench | 26.3% | — |
| DTBench | — | 81.1% |
| LMCA | — | 24% |
| Epoch Capabilities Index | 146.02 | — |
| ForecastBench | 60.2 | — |
Math Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 40.1 (#81), Qwen Plus: 22.0 (#266)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Math | 1396 | 1326 |
| FrontierMath (Feb 2025 set) | 21.4% | 1.7% |
| OTIS Mock AIME 2024-2025 | — | 17.8% |
| Omni-MATH | 65.4% | — |
| MATH Level 5 | — | 65.3% |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 36.9 (#153), Qwen Plus: 27.4 (#245)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Expert | 1363 | 1328 |
| GPQA Diamond | — | 48.1% |
| MMLU-Pro | 81.9% | — |
| Confabulations | 20.4% | — |
| Vectara Hallucination Rate | 17.9% | — |
| GPQA (HELM) | 65.3% | — |
Multilingual Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 49.8 (#125), Qwen Plus: 45.3 (#170)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Non-English | 1372 | 1310 |
| LMArena Chinese | 1416 | 1347 |
| LMArena Japanese | 1349 | 1251 |
| LMArena Russian | 1384 | 1323 |
| LMArena French | 1379 | — |
| LMArena German | 1386 | — |
| LMArena Korean | 1324 | — |
| LMArena Spanish | 1383 | — |
Instruction Following Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 71.3 (#151), Qwen Plus: 69.0 (#176)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Instruction Following | 1347 | 1303 |
| IFEval | 85% | — |
Long Context Too close to call
Kimi K2 (Jul 2025): 41.2 (#140), Qwen Plus: 40.3 (#153)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Longer Query | 1353 | 1325 |
| Fiction.LiveBench | 66.7% | — |
| CL-bench | 17.6% | — |
Writing & Preference Kimi K2 (Jul 2025) leads
Kimi K2 (Jul 2025): 62.5 (#76), Qwen Plus: 52.4 (#171)
| Benchmark | Kimi K2 (Jul 2025) | Qwen Plus |
|---|---|---|
| LMArena Text | 1380 | 1326 |
| LMArena Creative Writing | 1349 | 1293 |
| LMArena Multi-Turn | 1371 | 1336 |
| Short-Story Creative Writing | 85.6% | — |
| EQ-Bench Creative Writing | 1666 | — |
| WildBench | 86.2% | — |
Frequently asked questions
Is Kimi K2 (Jul 2025) better than Qwen Plus?
Kimi K2 (Jul 2025) is the stronger model overall, scoring 40.9 to 36.7 on the Noometry Index. Qwen Plus costs 1.7× less per token, which makes it the better buy when Kimi K2 (Jul 2025)'s lead doesn't matter for your workload.
Which is cheaper, Kimi K2 (Jul 2025) or Qwen Plus?
Qwen Plus is cheaper. It lists at $0.40 per million input tokens and $1.20 per million output tokens; Kimi K2 (Jul 2025) lists at $0.57 and $2.30.
Is Kimi K2 (Jul 2025) or Qwen Plus better for coding?
Kimi K2 (Jul 2025) scores higher on coding benchmarks: 43.1 versus 38.3 in the Noometry coding category.
Which has the bigger context window?
Qwen Plus does, with 1M tokens against 262K.
How many benchmarks do Kimi K2 (Jul 2025) and Qwen Plus share?
15 benchmarks have published results for both models. Kimi K2 (Jul 2025) has 42 scored results on Noometry and Qwen Plus has 20.