Live X Search Agent: Real-Time Trend Tracking With Grok

On July 8, 2026, xAI put Grok 4.5 on the API. It is priced at $2 per million input tokens and $6 per million output tokens, with a configurable reasoning_effort of low, medium, or high (high is the default). Most of the launch coverage focused on coding and agentic benchmarks. The feature that is actually hard to copy sits somewhere else: Grok can run a server-side X Search tool that reads live posts from X and hands you back an answer with citations, in a single API call.