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Grok 4.3

grok-4.3

ProprietaryMultimodal

About

xAI's Grok 4.3 is the GA API model that supersedes the Grok 4.3 Beta identifier. It supports native video input processing, document generation workflows, tool use, structured outputs, and Grok Computer integration. xAI's current model metadata lists API ID grok-4.3 with a 1,000,000 token prompt window.

Grok 4.3 has a 1M-token context window.

Grok 4.3 input tokens at $1.25/1M, output at $2.5/1M.

Capabilities

VisionMultimodalReasoningFunction CallingTool UseStructured OutputsCode ExecutionPrompt CachingBatch APIAudioFine-tuning

Providers(2)

Compare all →
ProviderInput (per 1M)Output (per 1M)Type
xAI Console$1.25$2.50Serverless
OpenRouter$1.25$2.5Serverless

Rankings

Specifications

FamilyGrok 4
Released2026-04-30
Parameters~0.5T
Context1M
Specializationgeneral
LicenseProprietary
Trainingpretrained

Created by

Ethical AI for universal truth-seeking

San Francisco, California, United States
Founded 2023
Website