Grok 4.1
grok-4.1
Grok 4.1 is a major refinement of the Grok family, delivering a more natural, expressive, and human-aligned interaction experience.
Grok 4.1 is a major refinement of the Grok family, delivering a more natural, expressive, and human-aligned interaction experience.
Intelligence
Higher
Speed
Slow
Price
$2.00 • $10.00
Input • Output
Input
Text
Output
Text
Grok 4.1 built on the large-scale reinforcement learning framework introduced with Grok 4, Grok 4.1 applies advanced reward-modeling techniques to optimize style, alignment, and conversational personality. By using frontier reasoning models as autonomous evaluators, it iterates at scale to produce responses that feel more coherent, helpful, and engaging, making it well-suited for high-quality dialog systems and agentic applications.
4096 context window
1000000 max output tokens
knowledge cutoff
Modalities
Text
Input and output
Image
Not supported
Audio
Not supported
Video
Not supported
Endpoints
Chat Completions
v1/chat/completions
Responses
v1/responses
Realtime
v1/realtime
Assistants
v1/assistants
Batch
v1/batch
Fine-tuning
v1/fine-tuning
Embeddings
v1/embeddings
Image generation
v1/images/generations
Videos
v1/videos
Image edit
v1/images/edits
Speech generation
v1/audio/speech
Transcription
v1/audio/transcriptions
Translation
v1/audio/translations
Moderation
v1/moderations
Completions (legacy)
v1/completions
Features
Streaming
Supported
Function calling
Not supported
Structured outputs
Not supported
Fine-tuning
Not supported
Distillation
Not supported
Tools
Tools supported by this model when using the Responses API.
Web search
Not supported
File search
Not supported
Image generation
Not supported
Code interpreter
Not supported
Computer use
Not supported
MCP
Not supported