Model comparison
Kimi K2.5 vs Qwen1.5 4b Chat
Kimi K2.5 is the stronger model overall, scoring 48.1 to 28.8 on the Noometry Index.
Last verified . 13 shared benchmarks.
Alibaba (Qwen)Summary
- They share 13 benchmarks with published results for both. Kimi K2.5 scores higher in 8 categories and Qwen1.5 4b Chat in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Kimi K2.5 leads 65.1 to 23.8.
Side by side
| Kimi K2.5 | Qwen1.5 4b Chat | |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 48.1 | 28.8 |
| Released | 2026-01-27 | — |
| Weights | Open | Open |
| Context window | 262K | — |
| Max output | 262K | — |
| Input $ / M tokens | $0.45 | — |
| Output $ / M tokens | $2.25 | — |
| Results tracked | 51 | 13 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Kimi K2.5 leads
Kimi K2.5: 48.8 (#53), Qwen1.5 4b Chat: 29.1 (#308)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Coding | 1474 | 999 |
| SWE-bench Verified | 73.8% | — |
| SWE-bench Verified (bash only) | 70.8% | — |
| LMArena WebDev | 1437 | — |
| SWE-bench Multilingual | 67.3% | — |
| SciCode | 49% | — |
| WeirdML | 45.6% | — |
| ALE-Bench | 821.65 | — |
Agentic & Tool Use Not comparable
Kimi K2.5: 34.2 (#48), Qwen1.5 4b Chat: —
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| Terminal-Bench | 43.2% | — |
| OSWorld | 63.3% | — |
| Vending-Bench 2 | 1,198 | — |
Reasoning Kimi K2.5 leads
Kimi K2.5: 31.2 (#80), Qwen1.5 4b Chat: 18.5 (#279)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Hard Prompts | 1453 | 976 |
| ARC-AGI-2 | 11.8% | — |
| SimpleBench | 46.8% | — |
| Kagi LLM Benchmark | 78.5% | — |
| NYT Connections (extended) | 69.9% | — |
| ARC-AGI-1 | 65.3% | — |
| CritPt | 3.1% | — |
| Chess Puzzles | 12% | — |
| EnigmaEval | 3.4% | — |
| Thematic Generalization | 69.4% | — |
| Epoch Capabilities Index | 148.03 | — |
Math Kimi K2.5 leads
Kimi K2.5: 51.8 (#53), Qwen1.5 4b Chat: 30.4 (#234)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Math | 1470 | 1026 |
| MathArena Final-Answer Competitions | 62.3% | — |
| OTIS Mock AIME 2024-2025 | 92.2% | — |
| FrontierMath (Feb 2025 set) | 27.9% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Kimi K2.5 leads
Kimi K2.5: 53.6 (#56), Qwen1.5 4b Chat: 26.7 (#255)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Expert | 1466 | 980 |
| GPQA Diamond | 87.6% | — |
| Humanity's Last Exam | 24.4% | — |
| SimpleQA Verified | 34.3% | — |
| Vectara Hallucination Rate | 14.2% | — |
Multimodal Not comparable
Kimi K2.5: 41.1 (#39), Qwen1.5 4b Chat: —
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Vision | 1269 | — |
| LMArena Document | 1430 | — |
Multilingual Kimi K2.5 leads
Kimi K2.5: 53.9 (#53), Qwen1.5 4b Chat: 24.1 (#290)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Non-English | 1433 | 979 |
| LMArena Chinese | 1495 | 1024 |
| LMArena German | 1441 | 902 |
| LMArena Russian | 1435 | 952 |
| LMArena French | 1454 | — |
| LMArena Japanese | 1421 | — |
| LMArena Korean | 1410 | — |
| LMArena Spanish | 1450 | — |
Instruction Following Kimi K2.5 leads
Kimi K2.5: 75.3 (#64), Qwen1.5 4b Chat: 49.0 (#300)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Instruction Following | 1431 | 978 |
Long Context Kimi K2.5 leads
Kimi K2.5: 52.1 (#7), Qwen1.5 4b Chat: 30.1 (#290)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Longer Query | 1445 | 988 |
| Fiction.LiveBench | 86.1% | — |
| CL-bench | 19.3% | — |
| CL-bench Life | 13.2% | — |
Writing & Preference Kimi K2.5 leads
Kimi K2.5: 65.1 (#53), Qwen1.5 4b Chat: 23.8 (#309)
| Benchmark | Kimi K2.5 | Qwen1.5 4b Chat |
|---|---|---|
| LMArena Text | 1445 | 997 |
| LMArena Creative Writing | 1423 | 969 |
| LMArena Multi-Turn | 1444 | 977 |
| EQ-Bench Creative Writing | 1579 | — |
Frequently asked questions
Is Kimi K2.5 better than Qwen1.5 4b Chat?
Kimi K2.5 is the stronger model overall, scoring 48.1 to 28.8 on the Noometry Index.
Is Kimi K2.5 or Qwen1.5 4b Chat better for coding?
Kimi K2.5 scores higher on coding benchmarks: 48.8 versus 29.1 in the Noometry coding category.
How many benchmarks do Kimi K2.5 and Qwen1.5 4b Chat share?
13 benchmarks have published results for both models. Kimi K2.5 has 51 scored results on Noometry and Qwen1.5 4b Chat has 13.