Grok 4.5 is the model SpaceXAI launched on 8 July 2026, trained on tens of thousands of NVIDIA GB300s alongside Cursor and served at about 80 tokens per second with roughly twice its peers’ token efficiency at $2 in and $6 out per million tokens (announcement). In this corpus it carries the loop in which conduct and capability compound that Aditya Gupta credited for the gains, the 4x training-cycle speedup beneath its cadence, and the asterisk that its run ingested the Cursor codebase, benchmark tasks included. Its debut at fourth on GDPval-AA and first on AutomationBench is recorded separately.
AISystem
Grok 4.5
SpaceXAI's frontier model of July 2026, built for coding, agentic tasks and knowledge work, whose gains Aditya Gupta credited to a loop in which better behavior unlocks more intelligence.
Sources
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- Welcome to July 9, 2026 (theinnermostloop.substack.com)
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