xAI
Grok 4.5
Release date: 7/8/2026
A fast reasoning system with high mathematical and scientific benchmark performance.
Pramaana IndexAccuracy: StandardLatency: LeadingCost: Strong
- Accuracy / Pramaana Index
- 64.61%± 1.50
- Latency / Pramaana Index
- 264.15s
- Cost / Test / Pramaana Index
- $1.08
- Context window
- 256k
- Max output tokens
- 64k
- Input modality
- Text · Image
Hyperparameter settings
temperature: 0.0
reasoning: extended
fallbacks: disabled
Benchmark performance for Grok 4.5
| Benchmarks | Accuracy | Ranking |
|---|---|---|
| Pramaana Index | 64.61% ± 1.50 | 8 / 35 |
| Pramaana Multimodal Index | 62.60% ± 1.67 | 7 / 24 |
| Legal Research Fidelity | 59.01% ± 0.48 | 8 / 18 |
| Financial Modeling Agent | 54.72% ± 0.65 | 9 / 22 |
| Clinical Documentation Safety | 58.31% ± 0.82 | 9 / 19 |
| MATH-500 | 77.91% ± 0.99 | 4 / 112 |
| GPQA Diamond | 79.62% ± 1.16 | 7 / 121 |
| MMLU-Pro | 77.11% ± 1.33 | 6 / 119 |
| Adaptive Tutoring Dialogue | 60.21% ± 1.50 | 9 / 16 |
| SWE-bench Verified | 51.12% ± 1.67 | 12 / 69 |
| LiveCodeBench | 70.10% ± 0.48 | 11 / 127 |
| Agentic Reliability | 50.80% ± 0.65 | 7 / 12 |
| Strategic Games Arena | 56.82% ± 0.82 | 9 / 20 |
| Benefits Navigator | 60.12% ± 0.99 | 9 / 16 |