X-Ai/Grok-4-Fast-Non-Reasoning
| Released | 2025-12-18 |
|---|---|
| Price per 1M | $0.20 in · $0.50 out |
| Overall score | 40.2 · rank 191 |
| Context window | 2,000,000 tokens |
| Provider | xAI |
| Weights | Proprietary |
Scores
| Dimension | Score | Rank | Benchmarks |
|---|---|---|---|
| Overall: Balanced | 40.2 | 191 | 5 |
| Overall: Coding | 38.6 | 194 | 2 |
| Overall: Reasoning | 38.9 | 200 | 2 |
| Overall: Agentic work | 39.5 | 191 | 2 |
| Overall: Frontend | 38.5 | 179 | 2 |
| Coding | 38.0 | 181 | 1 |
| Reasoning | 42.1 | 173 | 1 |
| Knowledge | 31.8 | 157 | 1 |
| General | 51.1 | 92 | 1 |
| Multimodal | 40.0 | 106 | 1 |
| Value vs price | −3.8 | 151 |
Evidence
Coding 38.0 ±5.3
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LiveCodeBench (Vals run) | 46.1% | Vals AI | 2026-09-01 |
Reasoning 42.1 ±4.8
| Benchmark | Result | Source | Date |
|---|---|---|---|
| GPQA Diamond (Vals run) | 62.1% | Vals AI | 2026-09-01 |
Knowledge 31.8 ±4.7
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MMLU-Pro (Vals run) | 70.3% | Vals AI | 2026-09-01 |
General 51.1 ±4.1
| Benchmark | Result | Source | Date |
|---|---|---|---|
| LMArena Text | 1,418 | LMArena | 2026-11-09 |
Multimodal 40.0 ±2.7
| Benchmark | Result | Source | Date |
|---|---|---|---|
| MMMU-Pro (Vals run) | 63.4% | Vals AI | 2026-09-01 |
Names matched to this model
grok-4-fast-non-reasoning