Compare / Qwen3.5-27B vs Kimi K2 (0905)
Qwen3.5-27B vs Kimi K2 (0905)
Which is cheaper, which is more capable, and which does better at each kind of work, from 19 results on 4 sources that measured both models.
Of the 19 results both models have, the better value on each. Results whose reported ranges overlap are too close to call.
Results as of 9 October 2026 (catalogue release 2026-10-09-dd620e778ac5). See also Alibaba vs Moonshot AI, every model from both labs.
Qwen3.5-27B or Kimi K2 (0905)? The short answer
Pick Qwen3.5-27B: it scores higher (Intelligence Index 22.9 against 15.3) and costs less.
- Qwen3.5-27B is cheaper: $0.74 against $1.07 per million tokens, 31% less.
- Qwen3.5-27B scores higher on the Artificial Analysis Intelligence Index: 22.9 against 15.3.
- Qwen3.5-27B is newer: released 24 Feb 2026, against 5 Sep 2025 for Kimi K2 (0905).
- On third-party benchmarks, on the results both models have: Qwen3.5-27B does better for reasoning and knowledge and sticking to the facts; Kimi K2 (0905) for writing.
Head to head
Every fact side by side
| Qwen3.5-27B | Kimi K2 (0905) | |
|---|---|---|
| Price per million tokens | $0.27 in · $2.16 out | $0.60 in · $2.50 out |
| Blended (3 in : 1 out) | $0.74 | $1.07 |
| Cheapest host, blended | $0.54 (Alibaba) | – |
| Intelligence Index | 22.9 | 15.3 |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | – | – |
| Context window | 262,144 tokens | 262,144 tokens |
| Released | 24 Feb 2026 (newer) | 5 Sep 2025 |
| Weights | Open | Open |
| Developer based in | China | China |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among the models on sale today, for each kind of work, from our own benchmarks and licensed sources. Further right is better; the better rank is in green.
Every shared result
Each model's best result on every measure both have, grouped by benchmark, with the setting that produced it. Under each measure, every model that benchmark has measured is a grey tick, best to the right, so you can see where the two sit in the field. The headline measures of each benchmark come first; the rest are under "Show all". Green marks the better value; where a source reports ranges that overlap, neither is marked.
| Measure | Qwen3.5-27B | Kimi K2 (0905) |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 3 results | ||
| Overall · TextArena rating, higher is better 129 · 113 of 387 measured | 1,409 | 1,419 |
| Overall · Text factualityArena rating, higher is better 112 · 132 of 163 measured | 1,420 | 1,403 |
| Business, management and finance · TextArena rating, higher is better 128 · 134 of 380 measured | 1,408 | 1,404 |
| Artificial Analysis reported by Artificial Analysis · 3 results | ||
| Artificial Analysis Intelligence Indexindex score, higher is better 86 · 126 of 243 measured | 22.9 | 15.3 |
| GPQA Diamond% of questions, higher is better 74 · 130 of 231 measured | 85.8% | 76.7% |
| Humanity's Last Exam% of questions, higher is better 95 · 178 of 242 measured | 23.9% | 6.4% |
| UGI Leaderboard reported by UGI Leaderboard · 3 results | ||
| Writing score · UGIscore out of 100, higher is better 99 · 61 of 230 measured | 42.4think-prefill reasoning | 54.4 |
| Requested-length error · UGI% off the requested word count, lower is better 49 · 129 of 230 measured | 11.0%think-prefill reasoning | 22.0% |
| Style adherence · UGIscore from 0 to 1, higher is better 147 · 194 of 230 measured | 0.33no reasoning | 0.31 |
| Vectara Hallucination Leaderboard reported by Vectara Hallucination Leaderboard · 2 results | ||
| Hallucination rate · Vectara% of summaries, lower is better 80 · 94 of 104 measured | 12.1% | 17.9% |
| Answer rate · Vectara% of documents, higher is better 31 · 72 of 104 measured | 99.8% | 98.6% |
Show all 19 results (8 more)
| Measure | Qwen3.5-27B | Kimi K2 (0905) |
|---|---|---|
| Arena (formerly LMArena) reported by Arena (formerly LMArena) · 4 results | ||
| Creative writing · TextArena rating, higher is better 145 · 119 of 385 measured | 1,358 | 1,381 |
| Expert prompts · TextArena rating, higher is better 112 · 138 of 338 measured | 1,441 | 1,417 |
| Instruction following · TextArena rating, higher is better 122 · 136 of 387 measured | 1,401 | 1,390 |
| Writing, literature and language · TextArena rating, higher is better 135 · 133 of 386 measured | 1,380 | 1,382 |
| Artificial Analysis reported by Artificial Analysis · 4 results | ||
| IFBench% of instructions, higher is better 24 · 126 of 195 measured | 75.6% | 41.7% |
| Long-context reasoning (AA-LCR)% of questions, higher is better 63 · 146 of 233 measured | 77.7% | 53.0% |
| Terminal-Bench Hard% of tasks, higher is better 61 · 84 of 190 measured | 32.6% | 23.5% |
| τ²-bench telecom% of tasks, higher is better 28 · 80 of 193 measured | 93.9% | 73.4% |
Compare them with other models
Quick answers
Is Qwen3.5-27B better than Kimi K2 (0905)?
Pick Qwen3.5-27B: it scores higher (Intelligence Index 22.9 against 15.3) and costs less.
Which is cheaper, Qwen3.5-27B or Kimi K2 (0905)?
Qwen3.5-27B is cheaper: $0.74 against $1.07 per million tokens, 31% less.
Which is better for reasoning and knowledge, Qwen3.5-27B or Kimi K2 (0905)?
Qwen3.5-27B ranks 82 of 198 models on sale for hard questions across science, maths and general knowledge, against 128 for Kimi K2 (0905).
Which is better for writing, Qwen3.5-27B or Kimi K2 (0905)?
Kimi K2 (0905) ranks 73 of 188 models on sale for what people prefer in blind comparisons, and judged writing quality, against 98 for Qwen3.5-27B.
Which is better for sticking to the facts, Qwen3.5-27B or Kimi K2 (0905)?
Qwen3.5-27B ranks 121 of 152 models on sale for summarising without inventing things, and factual answers, against 135 for Kimi K2 (0905).
Run Qwen3.5-27B and Kimi K2 (0905) on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.