Grok 4.5 is available through xAI’s API and Cursor. The practical change: xAI and Cursor position it for long-running coding and knowledge-work tasks, with base API pricing of $2 per million input tokens and $6 per million output tokens.
What Changed
Grok 4.5 matters if you use AI to complete multi-step work, not just answer questions.
xAI’s newest model is available in its API and in Cursor. The pitch is simple: give it a bigger task—debug a feature, investigate a data problem, prepare research—and let it use tools over a longer stretch of work. The base API price is $2 per million input tokens and $6 per million output tokens.
Why It Matters
But do not pick it because of launch benchmarks. Pick one real workflow and test it against the model you already use. Give each model the same issue, the same repo or documents, and the same definition of done. Then compare the output, corrections required, runtime, and cost.
One important caveat: Cursor says a previous snapshot of its codebase accidentally appeared in Grok 4.5’s training data, so its CursorBench result has an unclear advantage. That is exactly why a workflow test beats a leaderboard screenshot.
What To Watch Next
Watch whether this becomes a dependable workflow improvement, not just another AI feature that sounds good in a demo.
Bottom Line
Grok 4.5 matters if it can reliably finish long-running coding and knowledge-work tasks, not merely win a chat comparison.
