xAI releases Grok 4.5
Grok 4.5 released — trained jointly with Cursor, on tens of thousands of NVIDIA GB300 GPUs. SWE Bench Pro 64.7%, Terminal Bench 2.1 83.3%
Why it matters
A new form: joint training with a coding-product company. States that competitors' figures were quoted from each company's system card
Source — Primary sources first; secondary reports are labelled “Press”
Officialx.aihttps://x.ai/news/grok-4-5Added in Week 35, 2026 · See that week