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Models

xai.grok-4.3

bedrock_mantle

Context Length

131K

Max Output

16K

Input Cost

$1.25/M

Output Cost

$2.50/M

Mode

Chat

Max Input Tokens

131K

Max Tokens

16K

Supported Endpoints

/v1/chat/completions, /v1/responses

Provider

Bedrock Mantle

Tool Choice

Yes

Response Schema

Yes

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Comparison Insights

Comprehensive analysis based on the latest model metadata from the comparison table above.

What should I know about xai.grok-4.3?

Overview

xai.grok-4.3 is a chat model provided by Bedrock Mantle.
With a context window of 131K tokens, this model can handle substantial inputs such as detailed documents or extended conversation histories.

Pricing

Input processing costs $1.25 per million tokens.
Output generation costs $2.50 per million tokens.

Output Capabilities

The model can generate up to 16K tokens in a single response.

Availability

Available through the following endpoints: /v1/chat/completions, /v1/responses.

What capabilities does xai.grok-4.3 support?

Supports function calling, enabling integration with external tools and APIs for extended functionality.
Includes vision capabilities to process and analyze images alongside text inputs.
Features advanced reasoning capabilities for complex problem-solving and multi-step logical tasks.
Allows explicit tool selection, giving developers fine-grained control over function execution.
Supports structured response schemas for consistent, predictable output formatting.

xai.grok-4.3 Pricing Overview

At $1.25 per 1M input tokens and $2.50 per 1M output tokens, xai.grok-4.3 ranks 1912 out of 2637 chat models by input cost. It is more expensive compared to the median of $0.50 for chat models, and is cheaper than 27% of models in this category.