> ## Documentation Index > Fetch the complete documentation index at: https://docs.apiyi.com/llms.txt > Use this file to discover all available pages before exploring further. # grok-4.5 Is Live at Official Price Parity > xAI's (SpaceXAI) new flagship grok-4.5, released July 8, is now on APIYI: co-trained with Cursor, tops agentic tool use, ~4.2x the output-token efficiency of Opus 4.8, priced at $2/$6 per 1M tokens matching official rates, open on default/svip groups. **2026/7/10 10:26 (UTC+8)** ยท New Model ยท xAI ๐Ÿš€ **`grok-4.5` is live ยท \$2/\$6 per 1M tokens at official parity, open on default / svip groups** xAI's (SpaceXAI) newest flagship, released 2026/7/8 โ€” Musk calls it "an Opus-class model, but faster, more token-efficient and lower cost": co-trained with Cursor, it tops agentic tool use on Artificial Analysis with roughly 4.2x the output-token efficiency of Opus 4.8. It speaks the OpenAI-compatible format โ€” just switch your `model` field to `grok-4.5`. Read the full breakdown in the [Grok 4.5 launch article](/en/news/grok-4-5-launch); recharge bonuses stack for an even lower effective price. *** โ† [Back to Live Updates](/en/live) ยท ๐Ÿ“š [Monthly Archive](/en/live/archive)