xAI launches Grok 4.5 with aggressive pricing and EU expansion

xAI launched Grok 4.5, a cost-efficient LLM trained on tens of thousands of Nvidia GB300 GPUs. It lags behind Fable 5 and GPT-5.5 in coding benchmarks but uses 4.2 times fewer tokens than Opus 4.8.

One continuously updated timeline instead of dozens of separate articles. New developments are appended as the story evolves.

1. AnnouncementJul 8, 2026, 07:01 PM

   xAI releases Grok 4.5, a cost-efficient LLM with lower token costs and planned EU availability by mid-July.

   xAI launched Grok 4.5, a cost-efficient LLM trained on tens of thousands of Nvidia GB300 GPUs. It lags behind Fable 5 and GPT-5.5 in coding benchmarks but uses 4.2 times fewer tokens than Opus 4.8.

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2. 17 hours later
   AnnouncementJul 9, 2026, 11:48 AM

   xAI releases Grok 4.5, its first model built with Cursor

   xAI released Grok 4.5, its first model developed with the help of the Cursor AI coding assistant.

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