Grok is a multimodal AI platform developed by xAI that provides reasoning, code generation, voice, image, and video processing through a single unified API, accessible via web, iOS, and Android apps.
What is Grok?
Grok is a suite of AI models and tools built by xAI, accessible via web, iOS, and Android apps as well as a developer API. It accepts inputs in text, code, voice, images, and video, and produces corresponding outputs—from answering questions to generating images and executing code. The platform runs on the Colossus supercluster, the world's largest, and powers everything from casual conversation to autonomous agent workflows.
Key Features
- Multimodal API — One API for text, code, voice, images, and video, with SDKs for Python, TypeScript, and cURL. Model "grok-4.3" is the latest reasoning agent.
- Voice Agent Builder — Recently introduced tool for building voice agents (announced July 1, 2026) that can handle voice interactions programmatically. Try Voice →
- /goal — Autonomous mode where Grok works toward a user-defined goal with a live progress checklist, executing subtasks like reading files and editing code.
- CLI Tool — Command-line interface for development, enabling rapid exploration and debugging (e.g., grep, read_file, rate limiting).
- Integrations — Connect with Interactive Brokers for financial market operations, and Databricks for data analytics (both announced in June 2026).
- Performance — Under 200ms median latency, 1M+ API calls per day, and 5+ model families covering different modalities and use cases.
- Imagine API — Generate images via the dedicated endpoint at https://x.ai/api/imagine.
Who is it for?
- Developers building applications that need reasoning, code generation, or multimodal processing—integrate Grok's API in seconds. Get an API key at https://console.x.ai/.
- Financial analysts using the Interactive Brokers integration to query market data and execute trades via natural language.
- Researchers and students asking complex scientific questions—the page showcases Grok explaining quantum entanglement, black holes, and the aurora borealis.
- Content creators generating images via the Imagine endpoint or building voice agents for customer service.
What can you do with Grok?
- Developers: Add chat completion, code generation, or image analysis to apps with a single API call. Example:
curl https://api.x.ai/v1/chat/completionswith model "grok-4.3". - Financial analysts: Ask Grok to analyze portfolio performance or execute trades through the Interactive Brokers integration.
- Scientists: Use Grok as a research assistant—ask it to explain quantum computing, black holes, or the sky's color.
- Product managers: Set a /goal for Grok to autonomously build a feature (e.g., "Add rate limiting to all API routes") while it shows real-time progress.
Pricing
Grok follows a freemium model. Free access is available on the web and mobile apps. Developers can use the API with usage-based pricing—get started at https://console.x.ai/. SuperGrok subscription unlocks premium features. Enterprise customers can contact sales for custom rate limits, dedicated support, and monthly invoicing.
FAQ
Is Grok free?
Yes, Grok has a free tier accessible via web and mobile apps. For API usage, there is a usage-based pricing model with automatically increasing rate limits.
What models does Grok use?
The latest model is grok-4.3, a reasoning agent. Grok also offers multiple model families for text, code, voice, images, and video.
How do I get an API key?
Sign up at https://console.x.ai/ to generate an API key. Then use it in your preferred SDK (Python, JavaScript, or cURL).
What is the Voice Agent Builder?
Announced July 1, 2026, it allows developers to create voice-based agents using Grok's voice capabilities. More details at https://x.ai/voice.
What is /goal?
A feature that lets you set a high-level objective for Grok to work autonomously—it breaks down tasks, edits files, and shows a live checklist. Announced June 22, 2026.
