Grok 4.3

xAI

grok-4.3

Released Apr 17, 2026

Chat

Providers

2

Context

1.0M

Input

$1.25/M

Output

$2.50/M

BAA-eligible on 1 of 2 providersPHI requires a signed BAA from Concentrate and HIPAA-enabled organization.

Aliases:grok-4-3

xAI's Grok 4.3 with 1M token context window. Supports configurable reasoning, function calling, structured outputs, and vision.

Azure

azure/grok-4.3QuantUnspecified

Input: $1.25/M
Output: $2.50/M
Context: 200K
Max out: 8K

Cache read: $0.20/M
Cache write: $1.25/M
Thinking out: $2.50/M

FlexPriority / Fast

xAI

xai/grok-4.3QuantUnspecified

Input: $1.25/M
Output: $2.50/M
Context: 1.0M
Max out: 131K

Cache read: $0.20/M
Cache write: $1.25/M
Thinking out: $2.50/M

Flex

Back to Model Fortress