Grok 4.5 Launches with Enhanced Coding and Agentic Capabilities

XFreeze · x · 2026-07-08

Grok 4.5 is reportedly launching today, utilizing SpaceXAI's new V9 foundation model with a parameter scale reaching 1.5 trillion, a massive upgrade from the previous 0.5 trillion parameter V8-small version serving Grok traffic.

The post emphasizes that this training round focused heavily on coding and agentic work, incorporating Cursor data, with continuous improvements in reinforcement learning. The related Grok Build harness is also getting stronger. It also claims that Grok 4.5 is already being privately tested internally at Tesla and SpaceX.

Related event: Musk Announces Grok 4.5 with 1.5T Parameters and Enhanced Coding(25 posts)→

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