x.ai grok Update Version Grok 4.3

Grok 4.3 is now generally available on Amazon Bedrock. It adds a 1-million-token context window, configurable reasoning effort, and is available in supported AWS Regions.

• Runs through Bedrock’s secure and reliable inference engine.

• Grok 4.3 is generally available on Amazon Bedrock.
• Supports configurable reasoning effort: none, low, medium, and high.
• Provides a 1-million-token context window for long documents and codebases.

• Available to all developers in supported AWS Regions.
• Example API usage targets grok-4.3 via the Bedrock OpenAI-compatible responses endpoint.
• Pricing listed as $1.25 per 1 million input tokens and $2.50 per 1 million output tokens.

• Example Bedrock responses API endpoint
  https://bedrock-mantle.us-west-2.api.aws/openai/v1/responses

Product Information

Vendor: x.ai

Product: grok

Product type: Other

Application category: Business

Platform: Web

Version: Grok 4.3

Vendor release date: Jun 17, 2026

Published on updatealert.io: Jun 18, 2026

Description: AI assistant for conversation, analysis, and content generation.