Grok 4.5 is xAI's smartest model, delivering frontier performance on coding, knowledge work, and STEM. It ships with a 500k-token context window and multimodal text and image inputs, with reasoning enabled via the API.

Grok 4.3 is xAI's reasoning model with a 1M token context window. It accepts text and image inputs with text output, suited for agentic workflows, instruction-following tasks, and applications requiring high factual accuracy. Supports parallel tool calling, structured outputs, and exposed reasoning.

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the reasoning enabled parameter in the API.

Grok 4.20 Multi-Agent Beta is a variant of xAI's Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information across complex tasks. Reasoning effort controls agent count: low/medium uses 4 agents, high/xhigh uses 16 agents.

xAI's state-of-the-art image generation model, combining Grok's strong prompt understanding with high-quality visual output. Produces detailed, creative images with excellent prompt adherence.

Grok 4.1 Fast model integrated via automation on 2025-11-21

Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Reasoning can be enabled via the API.

Grok Code Fast 1 model integrated via automation on 2025-08-26

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.

Grok 3 Mini is a lightweight, smaller thinking model ideal for reasoning-heavy tasks that don't demand extensive domain knowledge. It shines in math-specific and quantitative use cases. Transparent 'thinking' traces accessible.

Grok 3 Beta is xAI's flagship model excelling at enterprise use cases like data extraction, coding, and text summarization. Possesses deep domain knowledge in finance, healthcare, law, and science. Outperforms Grok 3 Mini on high thinking tasks.

Grok 3 Thinking exposes the full chain-of-thought process during problem-solving, including error backtracking and alternative solution exploration. Scores 84.6% on GPQA Diamond benchmark for expert-level Q&A.

Grok 3 is a cutting-edge AI model from xAI with Big Brain Mode for complex problems, Colossus Supercomputer integration, and Reinforcement Learning optimization. Achieves 1402 Elo on LMArena benchmarks and 93.3% on AIME 2025 mathematics competition.

Grok 4.5 is xAI's smartest model, delivering frontier performance on coding, knowledge work, and STEM. It ships with a 500k-token context window and multimodal text and image inputs, with reasoning enabled via the API.

Grok 4.3 is xAI's reasoning model with a 1M token context window. It accepts text and image inputs with text output, suited for agentic workflows, instruction-following tasks, and applications requiring high factual accuracy. Supports parallel tool calling, structured outputs, and exposed reasoning.

Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherence, delivering consistently precise and truthful responses. Reasoning can be enabled/disabled using the reasoning enabled parameter in the API.

Grok 4.20 Multi-Agent Beta is a variant of xAI's Grok 4.20 designed for collaborative, agent-based workflows. Multiple agents operate in parallel to conduct deep research, coordinate tool use, and synthesize information across complex tasks. Reasoning effort controls agent count: low/medium uses 4 agents, high/xhigh uses 16 agents.

xAI's state-of-the-art image generation model, combining Grok's strong prompt understanding with high-quality visual output. Produces detailed, creative images with excellent prompt adherence.

Grok 4.1 Fast model integrated via automation on 2025-11-21

Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Reasoning can be enabled via the API.

Grok Code Fast 1 model integrated via automation on 2025-08-26

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.

Grok 3 Mini is a lightweight, smaller thinking model ideal for reasoning-heavy tasks that don't demand extensive domain knowledge. It shines in math-specific and quantitative use cases. Transparent 'thinking' traces accessible.

Grok 3 Beta is xAI's flagship model excelling at enterprise use cases like data extraction, coding, and text summarization. Possesses deep domain knowledge in finance, healthcare, law, and science. Outperforms Grok 3 Mini on high thinking tasks.

Grok 3 Thinking exposes the full chain-of-thought process during problem-solving, including error backtracking and alternative solution exploration. Scores 84.6% on GPQA Diamond benchmark for expert-level Q&A.

Grok 3 is a cutting-edge AI model from xAI with Big Brain Mode for complex problems, Colossus Supercomputer integration, and Reinforcement Learning optimization. Achieves 1402 Elo on LMArena benchmarks and 93.3% on AIME 2025 mathematics competition.