X.ai recently announced in a live stream Grok 4.5 release on 8 July 2026.
It is billed as the strongest model ever released.
Developed in collaboration with SpaceXAI recently.
It improves software development and investment tasks.
The model is introduced together integration into Cursor for developers, reported by Bloomberg and Forbes.
Elon Musk described it the "Opus-class" system during a live chat.
Pricing is set below that of Fable 5 and GPT 5.5, cheaper, according to reports.
The launch follows a series AI updates in recent months this quarter.