Model comparison
Grok 4.5 vs Qwen3 8B
Grok 4.5 is the stronger model overall, scoring 55.0 to 33.7 on the Noometry Index. Qwen3 8B costs 9.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Last verified . 8 shared benchmarks.
Alibaba (Qwen)Summary
- They share 8 benchmarks with published results for both. Grok 4.5 scores higher in 6 categories and Qwen3 8B in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Grok 4.5 leads 56.1 to 16.6.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 97.8% for Grok 4.5 and 56.1% for Qwen3 8B.
- Qwen3 8B is cheaper at $0.18 / $0.70 per million input/output tokens, against $2 / $6 for Grok 4.5.
- Grok 4.5 accepts more context: 500K tokens versus 131K.
- Qwen3 8B has downloadable open weights; the other is API-only.
Side by side
| Grok 4.5 | Qwen3 8B | |
|---|---|---|
| Provider | xAI | Alibaba (Qwen) |
| Noometry Index | 55.0 | 33.7 |
| Released | 2026-07-08 | 2025-04 |
| Weights | Proprietary | Open |
| Context window | 500K | 131K |
| Max output | 500K | 8K |
| Input $ / M tokens | $2 | $0.18 |
| Output $ / M tokens | $6 | $0.70 |
| Results tracked | 52 | 11 |
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Category by category
Coding Grok 4.5 leads
Grok 4.5: 52.2 (#35), Qwen3 8B: 34.0 (#248)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| SciCode | 54.1% | 22.6% |
| DeepSWE | 53.8% | — |
| FrontierCode | 42.4% | — |
| LMArena WebDev | 1553 | — |
| WeirdML | 46.4% | — |
| LMArena Coding | 1474 | — |
| ALE-Bench | 1,309 | — |
Agentic & Tool Use Grok 4.5 leads
Grok 4.5: 44.4 (#17), Qwen3 8B: 30.2 (#78)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| APEX-Agents | 56.2% | — |
| Berkeley Function Calling Leaderboard | — | 42.6% |
| τ²-bench Banking | 47.9% | — |
| PostTrainBench | 23.4% | — |
| GBAEval | 65.4% | — |
| GDP.pdf | 14% | — |
| LMArena Search | 1213 | — |
| Vending-Bench 2 | 3,887 | — |
Reasoning Grok 4.5 leads
Grok 4.5: 56.1 (#25), Qwen3 8B: 16.6 (#303)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| CritPt | 15.4% | 0% |
| Chess Puzzles | 36% | 5% |
| DTBench | 96.5% | 59.7% |
| LMCA | 45.2% | 8.8% |
| Epoch Capabilities Index | 153.92 | 136.17 |
| ARC-AGI-2 | 52.6% | — |
| SimpleBench | 70% | — |
| Kagi LLM Benchmark | 83.5% | — |
| NYT Connections (extended) | 79.9% | — |
| ARC-AGI-1 | 87.2% | — |
| LMArena Hard Prompts | 1462 | — |
| Surface Evolver Bench | 74.4% | — |
Math Grok 4.5 leads
Grok 4.5: 60.9 (#35), Qwen3 8B: 34.9 (#191)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 97.8% | 56.1% |
| FrontierMath (Tiers 1-3) | 57.2% | — |
| FrontierMath Tier 4 | 24.4% | — |
| ProofBench | 31% | — |
| LMArena Math | 1459 | — |
Knowledge Grok 4.5 leads
Grok 4.5: 62.3 (#24), Qwen3 8B: 36.1 (#173)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| GPQA Diamond | 93.4% | 56.8% |
| SimpleQA Verified | 48.3% | — |
| Vectara Hallucination Rate | — | 4.8% |
| LMArena Expert | 1466 | — |
Multimodal Not comparable
Grok 4.5: 37.6 (#72), Qwen3 8B: —
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| LMArena Vision | 1288 | — |
| Blueprint-Bench 2 | 27.3% | — |
| Furniture Assembly | 22.5% | — |
| LMArena Document | 1452 | — |
Multilingual Not comparable
Grok 4.5: 54.4 (#42), Qwen3 8B: —
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| LMArena Non-English | 1440 | — |
| LMArena Chinese | 1496 | — |
| LMArena French | 1456 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1428 | — |
| LMArena Korean | 1404 | — |
| LMArena Russian | 1448 | — |
| LMArena Spanish | 1450 | — |
Instruction Following Not comparable
Grok 4.5: 76.0 (#48), Qwen3 8B: —
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| LMArena Instruction Following | 1446 | — |
Long Context Grok 4.5 leads
Grok 4.5: 44.8 (#56), Qwen3 8B: 37.9 (#210)
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| Fiction.LiveBench | — | 62.1% |
| LMArena Longer Query | 1463 | — |
Writing & Preference Not comparable
Grok 4.5: 65.8 (#42), Qwen3 8B: —
| Benchmark | Grok 4.5 | Qwen3 8B |
|---|---|---|
| LMArena Text | 1448 | — |
| LMArena Creative Writing | 1442 | — |
| EQ-Bench Creative Writing | 1579 | — |
| LMArena Multi-Turn | 1456 | — |
Frequently asked questions
Is Grok 4.5 better than Qwen3 8B?
Grok 4.5 is the stronger model overall, scoring 55.0 to 33.7 on the Noometry Index. Qwen3 8B costs 9.7× less per token, which makes it the better buy when Grok 4.5's lead doesn't matter for your workload.
Which is cheaper, Grok 4.5 or Qwen3 8B?
Qwen3 8B is cheaper. It lists at $0.18 per million input tokens and $0.70 per million output tokens; Grok 4.5 lists at $2 and $6.
Is Grok 4.5 or Qwen3 8B better for coding?
Grok 4.5 scores higher on coding benchmarks: 52.2 versus 34.0 in the Noometry coding category.
Which has the bigger context window?
Grok 4.5 does, with 500K tokens against 131K.
How many benchmarks do Grok 4.5 and Qwen3 8B share?
8 benchmarks have published results for both models. Grok 4.5 has 52 scored results on Noometry and Qwen3 8B has 11.