Model comparison
Gemini 3 Deep Think vs Grok 4.1 Fast
Grok 4.1 Fast has enough public results to be ranked (#131); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
Last verified . 0 shared benchmarks.
GoogleSummary
- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.8 to 42.3.
Side by side
| Gemini 3 Deep Think | Grok 4.1 Fast | |
|---|---|---|
| Provider | xAI | |
| Noometry Index | 58.5 | 40.9 |
| Released | 2026-02-12 | 2025-06-27 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 30K |
| Input $ / M tokens | — | $0.20 |
| Output $ / M tokens | — | $0.50 |
| Results tracked | 3 | 32 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 33.8 (#236)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena WebDev | — | 1241 |
| LMArena Coding | — | 1411 |
| ALE-Bench | — | 394.93 |
Agentic & Tool Use Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 36.1 (#35)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| Berkeley Function Calling Leaderboard | — | 69.6% |
| τ²-bench Banking | — | 13.1% |
| LMArena Search | — | 1171 |
| Vending-Bench 2 | — | 1,107 |
Reasoning Gemini 3 Deep Think leads
Gemini 3 Deep Think: 70.8 (#11), Grok 4.1 Fast: 42.3 (#45)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | — | 56% |
| NYT Connections (extended) | — | 87.4% |
| ARC-AGI-1 | 96% | — |
| CritPt | 25.7% | — |
| LMArena Hard Prompts | — | 1407 |
| DTBench | — | 87.7% |
| ForecastBench | — | 61 |
Math Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 30.9 (#201)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| MathArena Final-Answer Competitions | — | 60.9% |
| ProofBench | — | 4% |
| LMArena Math | — | 1408 |
Knowledge Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 32.6 (#203)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| Vectara Hallucination Rate | — | 17.8% |
| LMArena Expert | — | 1398 |
Multimodal Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 36.3 (#71)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena Vision | — | 1201 |
Multilingual Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 51.1 (#110)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena Non-English | — | 1391 |
| LMArena Chinese | — | 1441 |
| LMArena French | — | 1416 |
| LMArena German | — | 1404 |
| LMArena Japanese | — | 1347 |
| LMArena Korean | — | 1361 |
| LMArena Russian | — | 1387 |
| LMArena Spanish | — | 1411 |
Instruction Following Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 72.8 (#127)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena Instruction Following | — | 1376 |
Long Context Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 42.4 (#121)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena Longer Query | — | 1390 |
Writing & Preference Not comparable
Gemini 3 Deep Think: —, Grok 4.1 Fast: 57.4 (#126)
| Benchmark | Gemini 3 Deep Think | Grok 4.1 Fast |
|---|---|---|
| LMArena Text | — | 1408 |
| LMArena Creative Writing | — | 1394 |
| EQ-Bench Creative Writing | — | 1327 |
| LMArena Multi-Turn | — | 1389 |
Frequently asked questions
Is Gemini 3 Deep Think better than Grok 4.1 Fast?
Grok 4.1 Fast has enough public results to be ranked (#131); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
How many benchmarks do Gemini 3 Deep Think and Grok 4.1 Fast share?
0 benchmarks have published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and Grok 4.1 Fast has 32.