Grok 4.3

xAI has released Grok 4.3, a new model featuring a 1 million token context window, function calling, structured outputs, and built-in reasoning. Pricing is set at $1.25 per million input tokens, $0.20 for cached input tokens, and $2.50 per million output tokens. The model is available across us-east-1 and eu-west-1 regions with rate limits of 1,800 requests per minute and 10 million tokens per minute. Different rates apply for requests exceeding the 200K context window.