xAI
xAIDevelops the Grok language models focused on reasoning, learning, and advancing reliable, high-performance AI systems.
Total Models: 11
grok-4-20-reasoning
grok-4-20-reasoning

Grok 4.2 is xAI’s latest large language model, built for strong reasoning, multimodal understanding, and enterprise use. It improves instruction following, honesty, and calibration over earlier Grok versions, while supporting both single‑agent and multi‑ag

chat-completion
grok-4-20-non-reasoning
grok-4-20-non-reasoning

Grok 4.2 is xAI’s latest large language model, built for strong reasoning, multimodal understanding, and enterprise use. It improves instruction following, honesty, and calibration over earlier Grok versions, while supporting both single‑agent and multi‑ag

chat-completion
grok-4-1-fast-non-reasoning
grok-4-1-fast-non-reasoning

Grok 4.1 Fast Non‑Reasoning is designed for low‑latency, near‑instant responses, emphasizing speed, high‑quality outputs, and smooth tool‑calling in agentic workflows, making it well‑suited for high‑throughput, real‑time scenarios where immediate responses

chat-completion
grok-4-1-fast-reasoning
grok-4-1-fast-reasoning

Grok 4.1 Fast Reasoning is a frontier multimodal model built for high‑performance, agentic execution—combining strong reasoning, advanced tool calling, and agentic search to handle complex tasks with speed and precision. It delivers natural, fluid dialogue

chat-completion
grok-4
grok-4

Grok 4 is the latest reasoning model from xAI with advanced reasoning and tool-use capabilities, enabling it to achieve new state-of-the-art performance across challenging academic and industry benchmarks.

chat-completion
grok-4-fast-reasoning
grok-4-fast-reasoning

Grok 4 Fast is an efficiency-focused large language model developed by xAI, pre-trained on general-purpose data and post-trained on task demonstrations and tool use, with built-in safety features including refusal behaviors, a fixed system prompt enforcing

chat-completion
grok-4-fast-non-reasoning
grok-4-fast-non-reasoning

Grok 4 Fast is an efficiency-focused large language model developed by xAI, pre-trained on general-purpose data and post-trained on task demonstrations and tool use, with built-in safety features including refusal behaviors, a fixed system prompt enforcing

chat-completion
grok-3
grok-3

Grok 3 is xAI's debut model, pretrained by Colossus at supermassive scale to excel in specialized domains like finance, healthcare, and the law.

chat-completion
grok-code-fast-1
grok-code-fast-1

Grok Code Fast 1 is a fast, economical AI model for agentic coding, built from scratch with a new architecture, trained on programming-rich data, and fine-tuned for real-world coding tasks like bug fixes and project setup.

chat-completion
grok-3-mini
grok-3-mini

Grok 3 Mini is a lightweight model that thinks before responding. Trained on mathematic and scientific problems, it is great for logic-based tasks.

chat-completion
grok-4.3
grok-4.3

Grok 4.3 is the latest model from xAI, with advanced reasoning, productivity, and multi-agent capabilities, enabling it to achieve state-of-the-art performance across challenging academic and industry benchmarks.

chat-completion