Model comparison
Grok 4 Fast vs Qwen2.5 32B Instruct
Grok 4 Fast is the stronger model overall, scoring 39.4 to 30.1 on the Noometry Index.
Last verified . 1 shared benchmarks.
Alibaba (Qwen)Summary
- They share 1 benchmark with published results for both. Grok 4 Fast scores higher in 3 categories and Qwen2.5 32B Instruct in 1 category; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Grok 4 Fast leads 38.9 to 16.2.
- Qwen2.5 32B Instruct has downloadable open weights; the other is API-only.
Side by side
| Grok 4 Fast | Qwen2.5 32B Instruct | |
|---|---|---|
| Provider | xAI | Alibaba (Qwen) |
| Noometry Index | 39.4 | 30.1 |
| Released | 2025-09-19 | 2024-09 |
| Weights | Proprietary | Open |
| Context window | — | 131K |
| Max output | — | 8K |
| Input $ / M tokens | — | $0.70 |
| Output $ / M tokens | — | $2.80 |
| Results tracked | 30 | 7 |
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Category by category
Coding Qwen2.5 32B Instruct leads
Grok 4 Fast: 32.5 (#271), Qwen2.5 32B Instruct: 38.7 (#169)
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| LMArena WebDev | 1159 | — |
| WeirdML | 42.9% | — |
| BigCodeBench Instruct | — | 45% |
| LMArena Coding | 1429 | — |
| BigCodeBench Complete | — | 52.3% |
Agentic & Tool Use Not comparable
Grok 4 Fast: 29.5 (#86), Qwen2.5 32B Instruct: —
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |
Reasoning Grok 4 Fast leads
Grok 4 Fast: 22.2 (#201), Qwen2.5 32B Instruct: 19.2 (#266)
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| Epoch Capabilities Index | 144.2 | 128.52 |
| ARC-AGI-2 | 5.3% | — |
| Kagi LLM Benchmark | 66.1% | — |
| ARC-AGI-1 | 48.5% | — |
| Chess Puzzles | — | 0% |
| LMArena Hard Prompts | 1412 | — |
| DTBench | 82.7% | — |
| ForecastBench | 60.5 | — |
Math Grok 4 Fast leads
Grok 4 Fast: 38.9 (#123), Qwen2.5 32B Instruct: 16.2 (#296)
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 7.4% |
| LMArena Math | 1419 | — |
| MATH Level 5 | — | 56.1% |
Knowledge Grok 4 Fast leads
Grok 4 Fast: 32.0 (#214), Qwen2.5 32B Instruct: 24.9 (#266)
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| GPQA Diamond | — | 46.1% |
| Vectara Hallucination Rate | 19.7% | — |
| LMArena Expert | 1411 | — |
Multilingual Not comparable
Grok 4 Fast: 51.3 (#111), Qwen2.5 32B Instruct: —
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| 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), Qwen2.5 32B Instruct: —
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| LMArena Instruction Following | 1387 | — |
Long Context Not comparable
Grok 4 Fast: 63.2 (#3), Qwen2.5 32B Instruct: —
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| Fiction.LiveBench | 94.4% | — |
| LMArena Longer Query | 1415 | — |
Writing & Preference Not comparable
Grok 4 Fast: 60.0 (#102), Qwen2.5 32B Instruct: —
| Benchmark | Grok 4 Fast | Qwen2.5 32B Instruct |
|---|---|---|
| LMArena Text | 1407 | — |
| LMArena Creative Writing | 1387 | — |
| LMArena Multi-Turn | 1414 | — |
Frequently asked questions
Is Grok 4 Fast better than Qwen2.5 32B Instruct?
Grok 4 Fast is the stronger model overall, scoring 39.4 to 30.1 on the Noometry Index.
Is Grok 4 Fast or Qwen2.5 32B Instruct better for coding?
Qwen2.5 32B Instruct scores higher on coding benchmarks: 38.7 versus 32.5 in the Noometry coding category.
How many benchmarks do Grok 4 Fast and Qwen2.5 32B Instruct share?
1 benchmark has published results for both models. Grok 4 Fast has 30 scored results on Noometry and Qwen2.5 32B Instruct has 7.