How much does Grok 4.3 cost?

Grok 4.3 is listed at $1.25/1M input tokens, $0.2/1M cached input tokens, and $2.5/1M output tokens.

What is the context window for Grok 4.3?

Grok 4.3 supports a context window of 1M tokens in Sim. In an agent, this determines how much conversation history, tool outputs, and retrieved documents the model can hold in a single call.

What capabilities does Grok 4.3 support?

Grok 4.3 supports the following capabilities in Sim: Temperature 0-1, Tool choice, Structured outputs.

What is Grok 4.3 best used for?

Best for long-context retrieval, large documents, and high-memory workflows. When used in a Sim workflow, it can be selected in any Agent block from the model picker.

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xAI model

Grok 4.3

Grok 4.3 is a xAI model tracked in Sim. It supports a 1M token context window. Pricing starts at $1.25/1M input tokens and $2.5/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs. Best for long-context retrieval, large documents, and high-memory workflows.

Build with this model All xAI models

Input price$1.25/1M

Cached input$0.2/1M

Output price$2.5/1M

Context window1M

Max outputNot published

ProviderxAI

UpdatedMay 5, 2026

Best forBest for long-context retrieval, large documents, and high-memory workflows.

Temperature0 to 1

Reasoning effortNot supported

VerbosityNot supported

Thinking levelsNot supported

Structured outputsSupported

Tool choiceSupported

Computer useNot supported

Deep researchNot supported

Memory supportSupported

Max output tokensNot published

Frequently asked questions

Grok 4.3 is a xAI model available in Sim. Grok 4.3 is a xAI model tracked in Sim. It supports a 1M token context window. Pricing starts at $1.25/1M input tokens and $2.5/1M output tokens. Key capabilities include Temperature 0-1, Tool choice, Structured outputs.