xAI

Elon Musk publicly praised Anthropic's Opus 5.5 as "a masterpiece" while predicting that xAI's Grok 5 should surpass it within two to three months, with continued acceleration thereafter. The remark is an executive comparison of rival models and discloses no parameters, architecture or benchmark data for Grok 5.

Elon Musk said he completed a roundtable review with the Grok engineering team, with fixes being deployed overnight and users expected to see a "dramatic improvement by tomorrow," inviting replies if issues persist. No specific defects, metrics or technical details were disclosed, making it a purely forward-looking promise.

Anthropic paid $3.4B for 1.7GW of Caterpillar gas generators, the largest known power-equipment purchase by an AI lab. It took over orders that supplier OnePWR Solutions placed two years ago but could not finance, so the engines arrive within two years instead of joining multi-year manufacturing queues. The deal, alongside xAI's $2B mobile gas turbines and Alphabet's Intersect acquisition, shows the compute race shifting toward direct control of power and infrastructure.