Model comparison
Gemini 3.8 Flash vs Qwen3.5 27B
Gemini 3.8 Flash is the stronger model overall, scoring 59.5 to 41.4 on the Noometry Index. Qwen3.5 27B costs 1.8× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.
Last verified . 24 shared benchmarks.
Google
Alibaba (Qwen)Summary
- They share 24 benchmarks with published results for both. Gemini 3.8 Flash scores higher in 9 categories and Qwen3.5 27B in 0 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.8 Flash leads 64.7 to 26.6.
- The biggest single-benchmark swing is NYT Connections (extended): 97.4% for Gemini 3.8 Flash and 47.9% for Qwen3.5 27B.
- Qwen3.5 27B is cheaper at $0.30 / $2.40 per million input/output tokens, against $0.75 / $3.75 for Gemini 3.8 Flash.
- Gemini 3.8 Flash accepts more context: 1.05M tokens versus 262K.
- Qwen3.5 27B has downloadable open weights; the other is API-only.
Side by side
| Gemini 3.8 Flash | Qwen3.5 27B | |
|---|---|---|
| Provider | Alibaba (Qwen) | |
| Noometry Index | 59.5 | 41.4 |
| Released | 2026-09-02 | 2026-02-23 |
| Weights | Proprietary | Open |
| Context window | 1.05M | 262K |
| Max output | 66K | 66K |
| Input $ / M tokens | $0.75 | $0.30 |
| Output $ / M tokens | $3.75 | $2.40 |
| Results tracked | 46 | 28 |
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Category by category
Coding Gemini 3.8 Flash leads
Gemini 3.8 Flash: 56.4 (#17), Qwen3.5 27B: 38.6 (#159)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena WebDev | 1581 | 1357 |
| LMArena Coding | 1512 | 1427 |
| ALE-Bench | 1,270 | 349.45 |
| DeepSWE | 73.8% | — |
| FrontierCode | 41.2% | — |
| CursorBench | 39.6% | — |
| FrontierSWE | 19.6% | — |
| SciCode | 56.6% | — |
| WeirdML | — | 39.5% |
Agentic & Tool Use Not comparable
Gemini 3.8 Flash: 40.3 (#22), Qwen3.5 27B: —
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| Vending-Bench 2 | 5,094 | 201.98 |
| APEX-Agents | 64.3% | — |
| GDP.pdf | 23.4% | — |
Reasoning Gemini 3.8 Flash leads
Gemini 3.8 Flash: 64.7 (#13), Qwen3.5 27B: 26.6 (#116)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| NYT Connections (extended) | 97.4% | 47.9% |
| LMArena Hard Prompts | 1506 | 1414 |
| DTBench | 95.7% | 82.4% |
| LMCA | 52.9% | 34% |
| CritPt | 18.3% | — |
| Chess Puzzles | 61% | — |
| Thematic Generalization | — | 45.5% |
| Mystery Game Puzzles | 47% | — |
| Surface Evolver Bench | 76.9% | — |
| Epoch Capabilities Index | 157.13 | — |
Math Gemini 3.8 Flash leads
Gemini 3.8 Flash: 65.2 (#22), Qwen3.5 27B: 36.8 (#103)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Math | 1528 | 1428 |
| FrontierMath (Tiers 1-3) | 68.4% | — |
| FrontierMath Tier 4 | 22% | — |
| MathArena Final-Answer Competitions | — | 56.7% |
| OTIS Mock AIME 2024-2025 | 98.9% | — |
| ProofBench | 48% | — |
Knowledge Gemini 3.8 Flash leads
Gemini 3.8 Flash: 74.9 (#2), Qwen3.5 27B: 37.4 (#149)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Expert | 1529 | 1428 |
| GPQA Diamond | 95.4% | — |
| Humanity's Last Exam | 44.5% | — |
| SimpleQA Verified | 69.7% | — |
| Vectara Hallucination Rate | — | 12.1% |
Multimodal Gemini 3.8 Flash leads
Gemini 3.8 Flash: 40.9 (#33), Qwen3.5 27B: 38.7 (#56)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Vision | 1312 | 1240 |
| Blueprint-Bench 2 | 38.6% | — |
| Furniture Assembly | 31.7% | — |
Multilingual Gemini 3.8 Flash leads
Gemini 3.8 Flash: 57.9 (#5), Qwen3.5 27B: 51.0 (#112)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Non-English | 1486 | 1390 |
| LMArena Chinese | 1547 | 1478 |
| LMArena French | 1502 | 1409 |
| LMArena German | 1470 | 1393 |
| LMArena Japanese | 1505 | 1345 |
| LMArena Korean | 1479 | 1359 |
| LMArena Russian | 1507 | 1389 |
| LMArena Spanish | 1492 | 1408 |
Instruction Following Gemini 3.8 Flash leads
Gemini 3.8 Flash: 78.2 (#11), Qwen3.5 27B: 73.7 (#114)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Instruction Following | 1489 | 1393 |
Long Context Gemini 3.8 Flash leads
Gemini 3.8 Flash: 46.2 (#23), Qwen3.5 27B: 43.1 (#103)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Longer Query | 1506 | 1413 |
Writing & Preference Gemini 3.8 Flash leads
Gemini 3.8 Flash: 72.1 (#16), Qwen3.5 27B: 59.5 (#106)
| Benchmark | Gemini 3.8 Flash | Qwen3.5 27B |
|---|---|---|
| LMArena Text | 1494 | 1409 |
| LMArena Creative Writing | 1485 | 1362 |
| LMArena Multi-Turn | 1503 | 1410 |
| EQ-Bench Creative Writing | 1748 | — |
Frequently asked questions
Is Gemini 3.8 Flash better than Qwen3.5 27B?
Gemini 3.8 Flash is the stronger model overall, scoring 59.5 to 41.4 on the Noometry Index. Qwen3.5 27B costs 1.8× less per token, which makes it the better buy when Gemini 3.8 Flash's lead doesn't matter for your workload.
Which is cheaper, Gemini 3.8 Flash or Qwen3.5 27B?
Qwen3.5 27B is cheaper. It lists at $0.30 per million input tokens and $2.40 per million output tokens; Gemini 3.8 Flash lists at $0.75 and $3.75.
Is Gemini 3.8 Flash or Qwen3.5 27B better for coding?
Gemini 3.8 Flash scores higher on coding benchmarks: 56.4 versus 38.6 in the Noometry coding category.
Which has the bigger context window?
Gemini 3.8 Flash does, with 1.05M tokens against 262K.
How many benchmarks do Gemini 3.8 Flash and Qwen3.5 27B share?
24 benchmarks have published results for both models. Gemini 3.8 Flash has 46 scored results on Noometry and Qwen3.5 27B has 28.