Grok 4.3

xAI

xAI's cost-efficient flagship. Built-in reasoning, 1M context, native video input.

Text Generation API Latest Grok Family v4.3
Documentation Back to Models
Parameters
-
params
Context Window
1.0M
tokens
Max Output
-
tokens
Input Price
$1.2500
per 1M tokens
Output Price
$2.5000
per 1M tokens

Grok Family Timeline 9 versions

Grok 4.3 Current Latest api
Apr 2026
Grok 4.20 Beta api
Mar 2026
Grok 4.1 Fast api
Nov 2025
Grok 4.1 api
Nov 2025
Grok Code Fast 1 api
Aug 2025
Grok 4 api
Jul 2025
Grok 3 Mini api
Mar 2025
Grok 3 api
Feb 2025
Grok 2 api
-

Capabilities

👁️
Vision
⚡
Function Calling
📋
JSON Mode
🌊
Streaming
💬
System Prompt
🖥️
Code Execution
🔍
Web Search
🔌
MCP Support

Extended Pricing

Input
$1.2500/1M
Output
$2.5000/1M
Cache Read
$0.2000/1M

Details

Release Date
April 30, 2026
Knowledge Cutoff
-
Source
API
API Key Required
Yes
License
Proprietary
Model ID
grok-4.3
Last updated: May 27, 2026