← All benchmarks
Grok 4 Fast (Reasoning)
SpaceXAI · Released 2025-09-19 · Independent benchmark scores from Artificial Analysis
Intelligence Index
27.4
Output speed
0.0
tokens/sec
Blended price
$0.28
per 1M tokens
Time to first token
0.00s
Model metadata
| Model ID | 573bbd93-114c-4b71-9ede-a73a7d4bdf84 |
|---|---|
| Slug | grok-4-fast-reasoning |
| Release date | 2025-09-19 |
| Provider | SpaceXAI |
| Provider slug | xai |
| Output speed | 0.0 tok/s |
| Time to first token | 0.00s |
| Time to first answer | 0.00s |
| Blended price ($/1M) | $0.28 |
| Input price ($/1M) | $0.20 |
| Output price ($/1M) | $0.50 |
All evaluation scores (17)
| aime | — |
|---|---|
| aime 25 | 89.7% |
| artificial analysis coding index | — |
| artificial analysis intelligence index | 27.40 |
| artificial analysis math index | 89.70 |
| gpqa | 84.7% |
| hle | 17.0% |
| ifbench | 50.5% |
| lcr | 64.7% |
| livecodebench | 83.2% |
| math 500 | — |
| mmlu pro | 85.0% |
| scicode | 44.2% |
| tau banking | — |
| tau2 | 65.8% |
| terminalbench hard | 18.9% |
| terminalbench v2 1 | — |
Source: artificialanalysis.ai/models/grok-4-fast-reasoning
Benchmark data from Artificial Analysis.