Model comparison
DBRX vs Grok 4 Fast
Grok 4 Fast is the stronger model overall, scoring 39.4 to 29.4 on the Noometry Index.
Last verified . 17 shared benchmarks.
DatabricksSummary
- They share 17 benchmarks with published results for both. DBRX scores higher in 1 category and Grok 4 Fast in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 33.7.
- DBRX has downloadable open weights; the other is API-only.
Side by side
| DBRX | Grok 4 Fast | |
|---|---|---|
| Provider | Databricks | xAI |
| Noometry Index | 29.4 | 39.4 |
| Released | 2024-03-27 | 2025-09-19 |
| Weights | Open | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 30 |
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Category by category
Coding Too close to call
DBRX: 32.9 (#266), Grok 4 Fast: 32.5 (#271)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Coding | 1132 | 1429 |
| LMArena WebDev | — | 1159 |
| WeirdML | — | 42.9% |
| HumanEval+ | 70.1% | — |
| MBPP+ | 55.8% | — |
Agentic & Tool Use Not comparable
DBRX: —, Grok 4 Fast: 29.5 (#86)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |
Reasoning Too close to call
DBRX: 21.4 (#222), Grok 4 Fast: 22.2 (#201)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Hard Prompts | 1113 | 1412 |
| ARC-AGI-2 | — | 5.3% |
| Kagi LLM Benchmark | — | 66.1% |
| ARC-AGI-1 | — | 48.5% |
| DTBench | — | 82.7% |
| Epoch Capabilities Index | — | 144.2 |
| ForecastBench | — | 60.5 |
Math Grok 4 Fast leads
DBRX: 24.3 (#269), Grok 4 Fast: 38.9 (#123)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1145 | 1419 |
| MATH Level 5 | 11.7% | — |
Knowledge Grok 4 Fast leads
DBRX: 14.9 (#294), Grok 4 Fast: 32.0 (#214)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Expert | 1076 | 1411 |
| GPQA Diamond | 32.9% | — |
| Vectara Hallucination Rate | — | 19.7% |
Multilingual Grok 4 Fast leads
DBRX: 29.3 (#268), Grok 4 Fast: 51.3 (#111)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1071 | 1396 |
| LMArena Chinese | 1068 | 1457 |
| LMArena French | 1096 | 1431 |
| LMArena German | 1057 | 1383 |
| LMArena Japanese | 990 | 1352 |
| LMArena Korean | 993 | 1357 |
| LMArena Russian | 1078 | 1389 |
| LMArena Spanish | 1064 | 1415 |
Instruction Following Grok 4 Fast leads
DBRX: 57.5 (#270), Grok 4 Fast: 73.2 (#121)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1112 | 1387 |
Long Context Grok 4 Fast leads
DBRX: 33.7 (#258), Grok 4 Fast: 63.2 (#3)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Longer Query | 1112 | 1415 |
| Fiction.LiveBench | — | 94.4% |
Writing & Preference Grok 4 Fast leads
DBRX: 33.6 (#275), Grok 4 Fast: 60.0 (#102)
| Benchmark | DBRX | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1119 | 1407 |
| LMArena Creative Writing | 1104 | 1387 |
| LMArena Multi-Turn | 1111 | 1414 |
Frequently asked questions
Is DBRX better than Grok 4 Fast?
Grok 4 Fast is the stronger model overall, scoring 39.4 to 29.4 on the Noometry Index.
Is DBRX or Grok 4 Fast better for coding?
They score almost the same on coding (32.9 vs 32.5); test both on your own repository before choosing.
How many benchmarks do DBRX and Grok 4 Fast share?
17 benchmarks have published results for both models. DBRX has 21 scored results on Noometry and Grok 4 Fast has 30.