Grok Models: Choose the Right xAI Model for Your Work, Research, and More

Grok 4.7 combines advanced coding and reasoning with improved document and presentation creation. It works longer on difficult tasks, checks its results more carefully, and manages large amounts of context. Adjustable reasoning levels make it a flexible choice for debugging software, analyzing information, and completing multi-step workflows using connected tools.

Grok 4.6, launched in August 2026, is a strong tool for long-running agents, codebase work, and interactive projects, improving self-testing, verification, and visual output over Grok 4.5.

Grok 4.5, which was launched in July 2026, is used extensively for coding and agentic work. Trained alongside Cursor, it provides efficient engineering performance that xAI compares positively with Opus-class models.

Grok 4.3 balances high reasoning density and production-ready efficiency, delivering precise, multi-step responses across text and image inputs for coding, research, and complex document workflows.

Grok 4.20 Reasoning features a strong agentic tool calling and the lowest hallucination rate on the market. Thanks to an extended thinking process before answering, it delivers consistently precise and truthful responses.

Grok 4.20 Non-Reasoning is a tool-focused variant of the flagship model that is highly responsive. By skipping the reasoning steps, it delivers industry-leading speed for automated pipelines, coding agents, and real-time applications while retaining the massive context capabilities of the Grok 4.20 architecture.

Grok 4.1 offers stronger emotional intelligence (EQ), improved creative performance, and significantly more reliable reasoning. It reduces hallucinations by 65% (from 12.09% to 4.22%), making it ideal for complex, high-stakes tasks that require both precision and nuance.

For the same strong reasoning capabilities as Grok 4.1, but with quicker responses, Grok 4.1 Fast delivers as it’s optimized for speed. This makes it ideal for production workflows that need advanced answers with lower latency.

If you need to break down complex problems for research, strategy, or any type of high-stakes analysis, Grok-4 Heavy can be your tool. It’s xAI’s most powerful reasoning system, making it ideal when you need deep reasoning across multiple steps or perspectives.

Grok 4 Fast balances performance and speed, making it a great choice for developers and general users to get rapid analysis, summaries, and interactive use cases where responsiveness matters most.

Grok-4 is the flagship single-agent reasoning model, delivering strong logical reasoning, long-context understanding, and high performance across analysis, technical writing, research, and more.

The first xAI mode to introduce major upgrades in reasoning depth was Grok-3. This version supports features like Think Mode for step-by-step logic. It’s useful for analyzing current events, summarizing breaking news, and performing real-time AI search tasks.

Grok-3 Mini is a more compact model compared to Grok-3, optimized for simple reasoning, short-form content, and high-volume tasks. It’s ideal when speed and efficiency matter more than deep analysis.

Grok-2 offers a strong balance between reasoning quality and speed. It’s a great choice for writing, coding, and analysis tasks, as well as a reliable everyday option for users who want solid Grok AI features.

If you need responses without much of a wait, Grok-2 Mini is a great choice to chat with. It’s ideal for high-volume tasks such as summarization and simple analysis, where low latency matters more than deep reasoning.

If you need to interpret and analyze visual content, Grok 2 Image can be a great choice. This Grok model can describe images and support multimodal workflows combining images and text.

Grok-1.5 Vision adds strong multimodal capabilities, allowing the model to interpret images, diagrams, and screenshots. If you need to complete tasks that involve visual inputs, such as explaining charts or converting visual information into text, this mode’s features can be helpful.