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xAI · API model

Grok 4.3

Grok 4.3 is a reasoning model from SpaceXAI. It accepts text and image inputs with text output, and is suited for agentic workflows, instruction-following tasks, and applications requiring high factual...

Context
1M
Input / 1M
$1.25
Output / 1M
$2.5
Released
Apr 30, 2026
View on OpenRouterFind it in the catalog
Specifications

Grok 4.3 specs

Provider
xAI
Type
API model
Model ID
x-ai/grok-4.3
Context window
1,000,000 tokens1M
Input price
$1.25per 1M input tokens
Output price
$2.5per 1M output tokens
Accepts
file, image, text
Produces
text
Released
Apr 30, 2026
Source
OpenRouter
Overview

About Grok 4.3

Grok 4.3 is an API model from xAI, released on Apr 30, 2026, with a context window of 1,000,000 tokens, pricing of $1.25 per million input tokens and $2.5 per million output tokens. It accepts file, image, text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.015.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

Tool callingStructured outputsJSON modeReasoning
FAQ

Grok 4.3 questions

What is the context window of Grok 4.3?

Grok 4.3 supports a context window of 1,000,000 tokens.

How much does Grok 4.3 cost?

Grok 4.3 is listed at $1.25 per million input tokens and $2.5 per million output tokens on OpenRouter.

When was Grok 4.3 released?

Grok 4.3 was published on Apr 30, 2026.

What inputs does Grok 4.3 accept?

Grok 4.3 accepts file, image, text input and produces text output.