Model comparison
Gemini 1.5 Pro (May 2024) vs Grok 4 Fast
Grok 4 Fast is the stronger model overall, scoring 39.4 to 32.1 on the Noometry Index.
Last verified . 23 shared benchmarks.
GoogleSummary
- They share 23 benchmarks with published results for both. Gemini 1.5 Pro (May 2024) scores higher in 1 category and Grok 4 Fast in 8 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 39.8.
- The biggest single-benchmark swing is DTBench: 59% for Gemini 1.5 Pro (May 2024) and 82.7% for Grok 4 Fast.
Side by side
| Gemini 1.5 Pro (May 2024) | Grok 4 Fast | |
|---|---|---|
| Provider | xAI | |
| Noometry Index | 32.1 | 39.4 |
| Released | 2024-02-15 | 2025-09-19 |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 45 | 30 |
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Category by category
Coding Gemini 1.5 Pro (May 2024) leads
Gemini 1.5 Pro (May 2024): 34.2 (#241), Grok 4 Fast: 32.5 (#271)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| WeirdML | 22.2% | 42.9% |
| LMArena Coding | 1294 | 1429 |
| LMArena WebDev | — | 1159 |
| BigCodeBench Instruct | 43.8% | — |
| BigCodeBench Complete | 57.5% | — |
| CadEval | 34% | — |
| HumanEval+ | 79.3% | — |
| MBPP+ | 74.6% | — |
Agentic & Tool Use Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 17.9 (#145), Grok 4 Fast: 29.5 (#86)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| Cybench | 7.5% | 30% |
| TheAgentCompany | 3.4% | — |
| τ²-bench Banking | — | 15.7% |
| BALROG | 21% | — |
| LMArena Search | — | 1171 |
Reasoning Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 12.3 (#338), Grok 4 Fast: 22.2 (#201)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| ARC-AGI-2 | 0.8% | 5.3% |
| LMArena Hard Prompts | 1296 | 1412 |
| DTBench | 59% | 82.7% |
| Epoch Capabilities Index | 131.73 | 144.2 |
| ForecastBench | 58.4 | 60.5 |
| SimpleBench | 27.1% | — |
| Kagi LLM Benchmark | — | 66.1% |
| ARC-AGI-1 | — | 48.5% |
| BIG-Bench Hard | 89.2% | — |
Math Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 25.8 (#266), Grok 4 Fast: 38.9 (#123)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Math | 1315 | 1419 |
| OTIS Mock AIME 2024-2025 | 23.1% | — |
| Omni-MATH | 36.4% | — |
| MATH Level 5 | 70.4% | — |
Knowledge Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 29.4 (#239), Grok 4 Fast: 32.0 (#214)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Expert | 1279 | 1411 |
| GPQA Diamond | 57.2% | — |
| Humanity's Last Exam | 4.6% | — |
| MMLU-Pro | 73.7% | — |
| Confabulations | 13.5% | — |
| Vectara Hallucination Rate | — | 19.7% |
| GPQA (HELM) | 53.4% | — |
| MMLU | 86.9% | — |
Multimodal Not comparable
Gemini 1.5 Pro (May 2024): 36.8 (#77), Grok 4 Fast: —
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Vision | 1161 | — |
| Video-MME | 75% | — |
Multilingual Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 45.3 (#174), Grok 4 Fast: 51.3 (#111)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Non-English | 1312 | 1396 |
| LMArena Chinese | 1331 | 1457 |
| LMArena French | 1302 | 1431 |
| LMArena German | 1286 | 1383 |
| LMArena Japanese | 1292 | 1352 |
| LMArena Korean | 1298 | 1357 |
| LMArena Russian | 1320 | 1389 |
| LMArena Spanish | 1311 | 1415 |
Instruction Following Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 68.6 (#185), Grok 4 Fast: 73.2 (#121)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Instruction Following | 1297 | 1387 |
| IFEval | 83.7% | — |
Long Context Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 39.8 (#169), Grok 4 Fast: 63.2 (#3)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Longer Query | 1308 | 1415 |
| Fiction.LiveBench | — | 94.4% |
Writing & Preference Grok 4 Fast leads
Gemini 1.5 Pro (May 2024): 52.4 (#172), Grok 4 Fast: 60.0 (#102)
| Benchmark | Gemini 1.5 Pro (May 2024) | Grok 4 Fast |
|---|---|---|
| LMArena Text | 1319 | 1407 |
| LMArena Creative Writing | 1333 | 1387 |
| LMArena Multi-Turn | 1296 | 1414 |
| WildBench | 81.3% | — |
Frequently asked questions
Is Gemini 1.5 Pro (May 2024) better than Grok 4 Fast?
Grok 4 Fast is the stronger model overall, scoring 39.4 to 32.1 on the Noometry Index.
Is Gemini 1.5 Pro (May 2024) or Grok 4 Fast better for coding?
Gemini 1.5 Pro (May 2024) scores higher on coding benchmarks: 34.2 versus 32.5 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Pro (May 2024) and Grok 4 Fast share?
23 benchmarks have published results for both models. Gemini 1.5 Pro (May 2024) has 45 scored results on Noometry and Grok 4 Fast has 30.