Grok 4.1 Fast
| Released | 2025-11-19 |
|---|---|
| Price per 1M | $0.20 in · $0.50 out |
| Overall score | 43.3 · rank 171 |
| Context window | 2,000,000 tokens |
| Provider | xAI |
| Weights | Proprietary |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 43.3 | 171 | 11 |
| Overall: Coding | 40.5 | 187 | 6 |
| Overall: Reasoning | 46.2 | 147 | 5 |
| Overall: Agentic work | 45.0 | 157 | 6 |
| Overall: Frontend | 37.5 | 186 | 2 |
| Coding | 36.6 | 186 | 1 |
| Agents | 48.0 | 119 | 2 |
| Reasoning | 47.0 | 137 | 3 |
| Math | 50.4 | 104 | 1 |
| Knowledge | 37.2 | 150 | 1 |
| General | 45.5 | 138 | 2 |
| Multimodal | 40.3 | 106 | 1 |
| Value vs price | −0.6 | 125 |
Configurations
| Configuration | Balanced | Benchmarks |
|---|---|---|
| Unspecified setting | 42.2 ±2.3 | 9 |
| High | 49.3 ±6.1 | 1 |
| Thinking | 50.4 ±7.1 | 1 |
Evidence
Coding 36.6 ±5.3
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LiveCodeBench (Vals run) | 42.6% | Vals AI | 2026-09-01 |
Agents 48.0 ±2.5
| Benchmark | Result | Source | Date |
|---|---|---|---|
| tau2-bench Banking Knowledge | 13.1% | tau2-bench | 2026-05-05 |
| BFCL v4 | 58.3% | BFCL | 2026-04-12 |
Reasoning 47.0 ±5.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| Extended NYT Connections | 12.3% | Lech Mazur | 2026-11-10 |
| GPQA Diamond (Vals run) | 65.2% | Vals AI | 2026-09-01 |
| SimpleBench | 56.0% | SimpleBench | 2025-11-20 |
| SimpleBench | 56.0% | Epoch AI | 2026-11-11 |
Math 50.4 ±4.2
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MathArena Final-Answer Competitions | 60.9% | MathArena | 2026-11-11 |
Knowledge 37.2 ±4.7
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MMLU-Pro (Vals run) | 75.2% | Vals AI | 2026-09-01 |
General 45.5 ±3.0
| Benchmark | Result | Source | Date |
|---|---|---|---|
| EQ-Bench Creative Writing v3 | 1,328 | EQ-Bench | 2026-11-11 |
| EQ-Bench Longform Creative Writing | 40.1% | EQ-Bench | 2026-11-11 |
Multimodal 40.3 ±2.7
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MMMU-Pro (Vals run) | 63.7% | Vals AI | 2026-09-01 |
Names matched to this model
grok-4-1-fast, grok-4-1-fast-non-reasoning