Grok Voice 3.0 is a realtime speech-to-speech model for voice assistants and customer support agents, using the xAI Voice Agent WebSocket API.
SpaceXAI's frontier model for coding, agentic tasks, and knowledge work. Accepts text and image input, produces text, and has a 500,000-token context window.
Grok Voice Transcribe 2.0 is xAI's next-generation speech-to-text model for batch transcription through the native /v1/stt API.
Grok 4.6 is SpaceXAI's model for coding, agentic tasks, and knowledge work. It supports text and image input, a 500k-token context window, configurable reasoning, function calling, structured outputs, and xAI's server-side web search, X search, and code execution tools.
Grok Imagine Image 2.0 is SpaceXAI's image generation and editing model. It accepts text and image inputs, produces 1K or 2K images at low, medium, or auto quality, supports batch generation and up to five source images for editing, and is available through the xAI Imagine API.
Grok Voice Think Fast 2.0 is xAI's next-generation realtime speech-to-speech model, with improved reasoning, transcription accuracy, conversational ability and tool-use reliability.
Grok 4.5 is an xAI chat and reasoning model with text and image input, text output, function calling, structured outputs, and a 500k token context window.
Grok Imagine Video 1.5 is SpaceXAI's image-to-video model. It animates one still image from a text prompt at 480p, 720p, or 1080p.
Grok Build 0.1 is SpaceXAI's fast coding model for agentic software engineering workflows. It supports text and image inputs with text outputs, tool use, structured outputs, and reasoning.
Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual.
Grok TTS is SpaceXAI's standalone text-to-speech API for converting text into spoken audio. It supports multiple voices, speech tags, streaming or batch output, and telephony-friendly codecs.
Grok 4.20 Beta is an xAI model released in March 2026 with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truthful responses.
Grok 4.20 is a reasoning model from SpaceXAI with industry-leading speed and agentic tool calling capabilities. It supports up to 2M of input context for long documents, codebases, and agent workflows.
Grok 4.20 Multi Agent Beta is a variant of SpaceXAI's Grok 4.20 designed for collaborative, agent-based workflows. This entry tracks a preview release and capabilities may change before general availability.
Grok Imagine Image is an image generation model from SpaceXAI for visual creation workflows. It supports text and image inputs for generation, restyling, or edit-style workflows.
Grok Imagine Video is a video generation model from SpaceXAI for prompt-driven clip and scene creation. It supports turning still images into animated clips as well as prompt-driven video workflows.
A frontier multimodal model optimized specifically for high-performance agentic tool calling.
A frontier multimodal model optimized specifically for high-performance agentic tool calling.
Grok 4 Fast Non Reasoning is a SpaceXAI agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window.
Grok 4 Fast Reasoning is a SpaceXAI agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window.
xAI's September 2025 advancement in cost-efficient reasoning models
Grok 4 Heavy is a text-to-speech model from SpaceXAI. It targets higher-capability workloads where depth, quality, or scale matter more than raw speed.
A lightweight model that thinks before responding. Fast, smart, and great for logic-based tasks that do not require deep domain knowledge. The raw thinking traces are accessible.
Grok 1.5V is a text-to-speech model from SpaceXAI.
SpaceXAI video generation model supporting text and image inputs with 480p, 720p, and 1080p output.
Grok Transcribe is xAI's speech-to-text model for the native /v1/stt API.
Grok 2 Image 1212 is a text-to-speech model from SpaceXAI.
Grok 2 Vision 1212 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual.
Grok 4.1 Fast is SpaceXAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window.
Grok 3 Beta is a model from SpaceXAI that excels at enterprise use cases like data extraction, coding, and text summarization.
Grok 3 Mini Beta is a lightweight, smaller thinking model. Unlike traditional models that generate answers immediately, Grok 3 Mini thinks before responding.
Grok 2 is a text-to-speech model from SpaceXAI. It accepts text inputs and produces text outputs.
A lightweight model that thinks before responding. Fast, smart, and great for logic-based tasks that do not require deep domain knowledge. The raw thinking traces are accessible.
Grok Imagine Video 1.5 Preview is a preview video generation model from SpaceXAI's Grok Imagine family. It accepts text, image, and video inputs and generates video outputs through the Grok Imagine API.
Grok Imagine Image Quality is an image generation model from SpaceXAI for visual creation workflows. It supports text and image inputs for generation, restyling, or edit-style workflows.
Grok Imagine Image Pro is an image generation model from SpaceXAI for visual creation workflows. It supports text and image inputs for generation, restyling, or edit-style workflows.
Grok 4.1 Non Thinking is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual.
Grok 4.1 Thinking is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual.
Grok Code Fast 1 is a speedy and economical reasoning model that excels at agentic coding. It supports up to 256K of input context for long documents, codebases, and agent workflows.
Grok 4 was a SpaceXAI reasoning model with a 256k context window. It supported parallel tool calling, structured outputs, and both image and text inputs.
Grok 3 was a model from SpaceXAI. It was their flagship model that excelled at enterprise use cases like data extraction, coding, and text summarization.
Grok 1 is a text-to-speech model from SpaceXAI. It accepts text inputs and produces text outputs.
Grok 0 is a text-to-speech model from SpaceXAI. It accepts text inputs and produces text outputs.