SpaceXAI: Grok 4.3

Name: SpaceXAI: Grok 4.3
Author: OpenRouter

proprietary

Grok 4.3 is a reasoning model from SpaceXAI.

Context

Max output

900K

Input price

$1.25/1M tokens

Output price

$2.5/1M tokens

Capabilities

Show unsupported (2)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Batch Processing

Details

Model IDx-ai/grok-4.3

ProviderOpenRouter

CreatorxAI

Familygrok-4.3

Licenseproprietary

Status—

Typechat

Input modalitiestext, image

Output modalitiestext

Open weightNo

Parameters—

Architecture—

Context window1M tokens

Max input—

Max output900K tokens

Reasoning tokens—

Knowledge cutoff2024-11

Release date2026-04-30

Sourceofficial

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$1.25

Output

$2.5

Cache write

—

Cache read

$0.2

Batch in

—

Batch out

—

Family Comparison: grok-4.3

Model	Caps	Perf	Speed	Context	Max out	Pricing
SpaceXAI: Grok 4.3 (batch)	RTJJM	—	—	1M	900K	$1$2
SpaceXAI: Grok 4.3	RTJJMSB	—	—	1M	900K	$1.25$2.5

API

GET/v1/models/openrouter/x-ai/grok-4.3