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Grok 4
14
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports p...
commercialpaid
About
Grok 4 is xAI's latest reasoning model with a 256k context window. It supports parallel tool calling, structured outputs, and both image and text inputs. Note that reasoning is not exposed, reasoning cannot be disabled, and the reasoning effort cannot be specified. Pricing increases once the total tokens in a given request is greater than 128k tokens. See more details on the [xAI docs](https://docs.x.ai/docs/models/grok-4-0709)
Details
| Modality | image, text |
| Context Window | 256.0K tokens |
| Release Date | Jul 9, 2025 |
| API Available | Yes |
| Hosting | api |
| Output Speed | 110 tokens/sec |
| Time to First Token | 1200ms |
| Quality Index | 89/100 |
| Coding Index | 82/100 |
| Reasoning Index | 92/100 |
Benchmarks
Chatbot Arena ELO
1475/1500
MMLU-Pro
86.6/100
SWE-bench Verified
73/100
MATH-500
95/100
GPQA Diamond
88/100
HumanEval
95/100
Artificial Analysis Index
43/100
Resources
Tags
multimodalapichatfrontierreasoning
Quick Info
- Organization
- xAI
- Pricing
- $3.00/1M input tokens
- Popularity
- 56/100
- Updated
- Feb 20, 2026
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