Model comparison
Grok 4 Fast vs Qwen3.6 Flash
Grok 4 Fast and Qwen3.6 Flash score almost the same on the Noometry Index (39.4 vs 38.8), so choose on price, context window or the category you care about most.
Last verified . 2 shared benchmarks.
Alibaba (Qwen)Summary
- They share 2 benchmarks with published results for both. Grok 4 Fast scores higher in 0 categories and Qwen3.6 Flash in 3 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Qwen3.6 Flash leads 42.1 to 32.0.
- The biggest single-benchmark swing is DTBench: 82.7% for Grok 4 Fast and 77.1% for Qwen3.6 Flash.
Side by side
| Grok 4 Fast | Qwen3.6 Flash | |
|---|---|---|
| Provider | xAI | Alibaba (Qwen) |
| Noometry Index | 39.4 | 38.8 |
| Released | 2025-09-19 | 2026-04-27 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.19 |
| Output $ / M tokens | — | $1.13 |
| Results tracked | 30 | 13 |
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Category by category
Coding Not comparable
Grok 4 Fast: 32.5 (#271), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| LMArena WebDev | 1159 | — |
| WeirdML | 42.9% | — |
| LMArena Coding | 1429 | — |
| ALE-Bench | — | 326.4 |
Agentic & Tool Use Not comparable
Grok 4 Fast: 29.5 (#86), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |
Reasoning Qwen3.6 Flash leads
Grok 4 Fast: 22.2 (#201), Qwen3.6 Flash: 29.0 (#96)
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| DTBench | 82.7% | 77.1% |
| Epoch Capabilities Index | 144.2 | 143.26 |
| ARC-AGI-2 | 5.3% | — |
| SimpleBench | — | 35.2% |
| Kagi LLM Benchmark | 66.1% | — |
| ARC-AGI-1 | 48.5% | — |
| Chess Puzzles | — | 20% |
| LMArena Hard Prompts | 1412 | — |
| Mystery Game Puzzles | — | 18% |
| LMCA | — | 31% |
| ForecastBench | 60.5 | — |
Math Too close to call
Grok 4 Fast: 38.9 (#123), Qwen3.6 Flash: 39.0 (#117)
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 22.5% |
| OTIS Mock AIME 2024-2025 | — | 84.4% |
| LMArena Math | 1419 | — |
| FrontierMath (Feb 2025 set) | — | 10.3% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Qwen3.6 Flash leads
Grok 4 Fast: 32.0 (#214), Qwen3.6 Flash: 42.1 (#100)
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| GPQA Diamond | — | 83.3% |
| SimpleQA Verified | — | 15.9% |
| Vectara Hallucination Rate | 19.7% | — |
| LMArena Expert | 1411 | — |
Multilingual Not comparable
Grok 4 Fast: 51.3 (#111), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| LMArena Non-English | 1396 | — |
| LMArena Chinese | 1457 | — |
| LMArena French | 1431 | — |
| LMArena German | 1383 | — |
| LMArena Japanese | 1352 | — |
| LMArena Korean | 1357 | — |
| LMArena Russian | 1389 | — |
| LMArena Spanish | 1415 | — |
Instruction Following Not comparable
Grok 4 Fast: 73.2 (#121), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| LMArena Instruction Following | 1387 | — |
Long Context Not comparable
Grok 4 Fast: 63.2 (#3), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| Fiction.LiveBench | 94.4% | — |
| LMArena Longer Query | 1415 | — |
Writing & Preference Not comparable
Grok 4 Fast: 60.0 (#102), Qwen3.6 Flash: —
| Benchmark | Grok 4 Fast | Qwen3.6 Flash |
|---|---|---|
| LMArena Text | 1407 | — |
| LMArena Creative Writing | 1387 | — |
| LMArena Multi-Turn | 1414 | — |
Frequently asked questions
Is Grok 4 Fast better than Qwen3.6 Flash?
Grok 4 Fast and Qwen3.6 Flash score almost the same on the Noometry Index (39.4 vs 38.8), so choose on price, context window or the category you care about most.
How many benchmarks do Grok 4 Fast and Qwen3.6 Flash share?
2 benchmarks have published results for both models. Grok 4 Fast has 30 scored results on Noometry and Qwen3.6 Flash has 13.