Grok
About
The Grok family of large language models (LLMs) originates from xAI, Elon Musk's AI company. The initial model, Grok-1, marked a significant leap in AI capabilities, especially in reasoning and coding, as it surpassed numerous contemporaries in its computational class 2. Its architecture is notable for utilizing a Mixture-of-Experts (MoE) design with 314 billion parameters and 8 experts, 2 of which are active at any given time 5. Building on this foundation, xAI introduced Grok-2, which further advanced reasoning capabilities and is accessible along with its smaller version, Grok-2 mini, to users on the X platform and through an enterprise API 1. These models are designed for versatility, adept at answering queries and assisting with coding tasks, and they distinguish themselves by incorporating real-time information from the X platform 21. Despite their impressive performance, concerns have emerged over the potential to generate harmful or biased content, due to the training data sourced from X 7.
Specifications(13 models)
| Model | Released | Context | Parameters | Vision | Multimodal | Reasoning | Fn Calling | Tool Use | JSON Mode |
|---|---|---|---|---|---|---|---|---|---|
| Grok 4 | 2026-03 | — | — | No | No | Yes | No | No | No |
| Grok 4 Fast Reasoning | 2026-03 | — | — | No | No | Yes | No | No | No |
| Grok 4 Fast Non-Reasoning | 2026-03 | — | — | No | No | Yes | No | No | No |
| Grok-3 | 2026-01 | 1M | 1000000000 | Yes | Yes | Yes | Yes | Yes | Yes |
| Grok Imagine Video | 2025-01 | — | — | No | No | No | No | No | No |
| Grok Imagine Image | 2024-12 | — | — | No | No | No | No | No | No |
| Grok Imagine Image Pro | 2024-12 | — | — | No | No | No | No | No | No |
| Grok-2 | 2024-08 | 128K | — | No | No | Yes | No | No | No |
| Grok-2 Mini | 2024-08 | 128K | — | No | No | Yes | No | No | No |
| Grok-1.5V | 2024-04 | — | — | No | No | Yes | No | No | No |
| Grok-1.5 | 2024-03 | — | — | No | No | Yes | No | No | No |
| Grok-1 | 2023-11 | — | 314B | No | No | Yes | No | No | No |
| Grok-0 | 2023-08 | — | — | No | No | Yes | No | No | No |
Available From(4 providers)
Pricing
| Model | Provider | Input / 1M | Output / 1M | Type |
|---|---|---|---|---|
| Grok 4 | OpenRouter | $3 | $15 | Serverless |
| Grok-3 | OpenRouter | $3 | $15 | Serverless |
| Grok 4 | Replicate API | $7.2 | $36 | Serverless |
Comparisons
- GPT-4o (08-06) vs Grok 4
- o3 vs Grok 4
- Grok 4 Fast Reasoning vs o3
- Claude Sonnet 4.6 vs Grok 4
- Claude Opus 4.6 vs Grok 4
- Claude 3.5 Sonnet vs Grok-2
- Grok 4 Fast Reasoning vs Claude Opus 4.6
- Gemini 3.1 Pro vs Grok 4
Frequently Asked Questions
- What is Grok?
- The Grok family of large language models (LLMs) originates from xAI, Elon Musk's AI company. The initial model, Grok-1, marked a significant leap in AI capabilities, especially in reasoning and coding, as it surpassed numerous contemporaries in its computational class 2. Its architecture is notable for utilizing a Mixture-of-Experts (MoE) design with 314 billion parameters and 8 experts, 2 of which are active at any given time 5. Building on this foundation, xAI introduced Grok-2, which further advanced reasoning capabilities and is accessible along with its smaller version, Grok-2 mini, to users on the X platform and through an enterprise API 1. These models are designed for versatility, adept at answering queries and assisting with coding tasks, and they distinguish themselves by incorporating real-time information from the X platform 21. Despite their impressive performance, concerns have emerged over the potential to generate harmful or biased content, due to the training data sourced from X 7.
- How many models are in the Grok family?
- The Grok family contains 13 models.
- What is the latest Grok model?
- The latest model is Grok 4, released in 2026-03.
- How much does Grok cost?
- Grok models range from $3/1M to $7.2/1M input tokens depending on the model and provider.
Models(13)
Grok 4
Grok 4 Fast Reasoning
Grok 4 Fast Non-Reasoning
Grok-3
Grok Imagine Video
Grok Imagine Image
Grok Imagine Image Pro
Grok-2
Grok-2 Mini
Grok-1.5V
Grok-1.5
Grok-1
Grok-0