Medium Foundation Models · 1 min read
Grok 3: xAI shows what 200,000 H100s and 18 months get you
In one sentence xAI launches Grok 3, trained on the Colossus 200K H100 cluster in Memphis. Includes a 'Think' reasoning mode and 'DeepSearch' agentic web research. Available to X Premium subscribers.
Reading level
xAI, Elon Musk's AI company, launches Grok 3. It's the first model that concretely shows what a giant cluster can do: 200,000 NVIDIA H100 GPUs built in 122 days in Memphis, Tennessee. For reference: GPT-4 was trained on roughly 25,000 GPUs.
What's new vs Grok 2:
- a "Think" mode that has the model reason step by step before answering (like OpenAI o1);
- a "DeepSearch" mode that lets it search the web and read sources before replying;
- direct integration with X (Twitter), where it can read posts in real time.
Available to X Premium+ users and through a dedicated Grok app. Discussion on X focuses heavily on the "less censored" tone Musk claims.
Companies
xAI
Tools
Grok 3, Grok 3 mini
Tags
xAIGrokElon MuskColossusReasoning
Sources