1. xAI offers $25 in free API credits per month until the end of the year. 2. Grok API pricing is set at $5 per million input tokens and $15 per million output tokens. 3. The API supports function calls and is compatible with OpenAI and Anthropic SDKs. 4. Colossus supercluster with 100,000 Nvidia H100 GPUs powers xAI's development. 5. A new Grok model is in the final stages of development.