Model comparison
Kimi K2.5 Instant vs Qwen3.5 Plus
Kimi K2.5 Instant and Qwen3.5 Plus score almost the same on the Noometry Index (42.9 vs 42.3), so choose on price, context window or the category you care about most.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Summary
- The widest gap is in math, where Qwen3.5 Plus leads 47.9 to 36.6.
- Kimi K2.5 Instant has downloadable open weights; the other is API-only.
Side by side
| Kimi K2.5 Instant | Qwen3.5 Plus | |
|---|---|---|
| Provider | Moonshot AI | Alibaba (Qwen) |
| Noometry Index | 42.9 | 42.3 |
| Released | — | 2026-02-16 |
| Weights | Open | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 18 | 15 |
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Category by category
Coding Not comparable
Kimi K2.5 Instant: 42.3 (#95), Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| LMArena WebDev | 1404 | — |
| LMArena Coding | 1483 | — |
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Kimi K2.5 Instant: —, Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
Kimi K2.5 Instant: 28.5 (#88), Qwen3.5 Plus: 32.0 (#67)
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1443 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |
Math Qwen3.5 Plus leads
Kimi K2.5 Instant: 36.6 (#105), Qwen3.5 Plus: 47.9 (#55)
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| LMArena Math | 1443 | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Qwen3.5 Plus leads
Kimi K2.5 Instant: 39.5 (#121), Qwen3.5 Plus: 46.0 (#78)
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
| LMArena Expert | 1438 | — |
Multimodal Not comparable
Kimi K2.5 Instant: 39.5 (#47), Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| LMArena Vision | 1254 | — |
Multilingual Not comparable
Kimi K2.5 Instant: 52.2 (#89), Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1406 | — |
| LMArena Chinese | 1450 | — |
| LMArena French | 1403 | — |
| LMArena German | 1413 | — |
| LMArena Korean | 1378 | — |
| LMArena Russian | 1404 | — |
| LMArena Spanish | 1448 | — |
Instruction Following Not comparable
Kimi K2.5 Instant: 75.5 (#61), Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1430 | — |
Long Context Too close to call
Kimi K2.5 Instant: 43.8 (#82), Qwen3.5 Plus: 42.9 (#109)
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1435 | — |
Writing & Preference Not comparable
Kimi K2.5 Instant: 60.8 (#91), Qwen3.5 Plus: —
| Benchmark | Kimi K2.5 Instant | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1420 | — |
| LMArena Creative Writing | 1379 | — |
| LMArena Multi-Turn | 1427 | — |
Frequently asked questions
Is Kimi K2.5 Instant better than Qwen3.5 Plus?
Kimi K2.5 Instant and Qwen3.5 Plus score almost the same on the Noometry Index (42.9 vs 42.3), so choose on price, context window or the category you care about most.
How many benchmarks do Kimi K2.5 Instant and Qwen3.5 Plus share?
0 benchmarks have published results for both models. Kimi K2.5 Instant has 18 scored results on Noometry and Qwen3.5 Plus has 15.