X.ai today announced publicly Grok 4.5 model on 8 July 2026.
It is billed as the top‑tier model in the market.
Developed by SpaceXAI recently.
It improves software development and finance tasks.
The model is launched together integration into Cursor as a plugin, reported by Bloomberg and Forbes.
Elon Musk referred to it the "Opus-class" system in a tweet.
Pricing is set below that of Fable 5 and GPT 5.5, making it more affordable, according to reports.
The launch mirrors several AI updates across its portfolio this quarter.