Model comparison
DeepSeek-V3 vs Grok 4 Fast
DeepSeek-V3 and Grok 4 Fast score almost the same on the Noometry Index (39.5 vs 39.4), so choose on price, context window or the category you care about most.
Last verified . 24 shared benchmarks.
DeepSeekSummary
- They share 24 benchmarks with published results for both. DeepSeek-V3 scores higher in 2 categories and Grok 4 Fast in 6 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 34.0.
- The biggest single-benchmark swing is Fiction.LiveBench: 50% for DeepSeek-V3 and 94.4% for Grok 4 Fast.
- DeepSeek-V3 has downloadable open weights; the other is API-only.
Side by side
| DeepSeek-V3 | Grok 4 Fast | |
|---|---|---|
| Provider | DeepSeek | xAI |
| Noometry Index | 39.5 | 39.4 |
| Released | 2024-12-26 | 2025-09-19 |
| Weights | Open | Proprietary |
| Context window | 164K | — |
| Max output | 164K | — |
| Input $ / M tokens | $0.24 | — |
| Output $ / M tokens | $0.90 | — |
| Results tracked | 60 | 30 |
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Category by category
Coding DeepSeek-V3 leads
DeepSeek-V3: 42.3 (#106), Grok 4 Fast: 32.5 (#271)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| WeirdML | 36.1% | 42.9% |
| LMArena Coding | 1368 | 1429 |
| Aider Polyglot | 55.1% | — |
| LMArena WebDev | — | 1159 |
| SciCode | 35.8% | — |
| BigCodeBench Instruct | 50% | — |
| LiveBench Coding | 70.9% | — |
| BigCodeBench Complete | 62.2% | — |
| HumanEval+ | 86.6% | — |
| MBPP+ | 73% | — |
Agentic & Tool Use Not comparable
DeepSeek-V3: —, Grok 4 Fast: 29.5 (#86)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| τ²-bench Banking | — | 15.7% |
| Cybench | — | 30% |
| LMArena Search | — | 1171 |
| METR Time Horizons | 49.6% | — |
Reasoning Grok 4 Fast leads
DeepSeek-V3: 20.5 (#236), Grok 4 Fast: 22.2 (#201)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| Kagi LLM Benchmark | 52.3% | 66.1% |
| LMArena Hard Prompts | 1365 | 1412 |
| DTBench | 64.8% | 82.7% |
| Epoch Capabilities Index | 135.94 | 144.2 |
| ForecastBench | 59.1 | 60.5 |
| ARC-AGI-2 | — | 5.3% |
| SimpleBench | 27.2% | — |
| ARC-AGI-1 | — | 48.5% |
| CritPt | 0% | — |
| LiveBench Reasoning | 65.8% | — |
| LiveBench Data Analysis | 60.9% | — |
| LMCA | 15.5% | — |
| BIG-Bench Hard | 87.5% | — |
| HellaSwag | 88.9% | — |
| LiveBench | 66.9% | — |
| PIQA | 84.7% | — |
| WinoGrande | 85.2% | — |
Math Grok 4 Fast leads
DeepSeek-V3: 32.1 (#219), Grok 4 Fast: 38.9 (#123)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1373 | 1419 |
| OTIS Mock AIME 2024-2025 | 37.8% | — |
| Omni-MATH | 40.3% | — |
| LiveBench Math | 73.5% | — |
| MATH Level 5 | 75.5% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge DeepSeek-V3 leads
DeepSeek-V3: 37.5 (#155), Grok 4 Fast: 32.0 (#214)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| Vectara Hallucination Rate | 6.1% | 19.7% |
| LMArena Expert | 1351 | 1411 |
| GPQA Diamond | 67.6% | — |
| MMLU-Pro | 72.3% | — |
| Confabulations | 26.1% | — |
| GPQA (HELM) | 53.8% | — |
| ARC (AI2) Challenge | 95.3% | — |
| MMLU | 87.2% | — |
| TriviaQA | 82.9% | — |
Multilingual Grok 4 Fast leads
DeepSeek-V3: 48.5 (#143), Grok 4 Fast: 51.3 (#111)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1358 | 1396 |
| LMArena Chinese | 1391 | 1457 |
| LMArena French | 1385 | 1431 |
| LMArena German | 1374 | 1383 |
| LMArena Japanese | 1333 | 1352 |
| LMArena Korean | 1319 | 1357 |
| LMArena Russian | 1373 | 1389 |
| LMArena Spanish | 1358 | 1415 |
Instruction Following Too close to call
DeepSeek-V3: 72.8 (#130), Grok 4 Fast: 73.2 (#121)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1345 | 1387 |
| LiveBench Instruction Following | 81.5% | — |
| IFEval | 83.2% | — |
Long Context Grok 4 Fast leads
DeepSeek-V3: 34.0 (#253), Grok 4 Fast: 63.2 (#3)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| Fiction.LiveBench | 50% | 94.4% |
| LMArena Longer Query | 1352 | 1415 |
Writing & Preference Grok 4 Fast leads
DeepSeek-V3: 57.4 (#130), Grok 4 Fast: 60.0 (#102)
| Benchmark | DeepSeek-V3 | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1375 | 1407 |
| LMArena Creative Writing | 1364 | 1387 |
| LMArena Multi-Turn | 1389 | 1414 |
| Short-Story Creative Writing | 77% | — |
| EQ-Bench Creative Writing | 1472 | — |
| WildBench | 83% | — |
| LiveBench Language | 49.1% | — |
Frequently asked questions
Is DeepSeek-V3 better than Grok 4 Fast?
DeepSeek-V3 and Grok 4 Fast score almost the same on the Noometry Index (39.5 vs 39.4), so choose on price, context window or the category you care about most.
Is DeepSeek-V3 or Grok 4 Fast better for coding?
DeepSeek-V3 scores higher on coding benchmarks: 42.3 versus 32.5 in the Noometry coding category.
How many benchmarks do DeepSeek-V3 and Grok 4 Fast share?
24 benchmarks have published results for both models. DeepSeek-V3 has 60 scored results on Noometry and Grok 4 Fast has 30.