Grok 4.3 API Pricing
Short answer
Grok 4.3 costs $1.25 per 1M input tokens and $2.50 per 1M output tokens (cached input $0.20/1M). Context window: 1M. Last verified 2026-06-17 from docs.x.ai. Confidence: Verified.
Grok 4.3 is xAI's flagship for reasoning and tool-calling agents, with an unusually low output-to-input price ratio.
Input
$1.25 /1M
Output
$2.50 /1M
Cached input
$0.20 /1M
Input pricing$1.25
Cached input$0.20
Output pricing$2.50
Limits & capabilities
Context window1M
Max output—
Modalitytext + image input, text output
ChannelOfficial API
ProviderxAI
Best for
ReasoningTool callingAgents
Official pricing lists cached input at $0.20/1M. Prompts over 200K total tokens bill at a higher (unpublished) rate. Batch 50% off. Also available on AWS Bedrock (price unverified).
Last checked Verified