SpaceXAI and the AI unit, by the numbers
Colossus, funding, and valuation.
200K
Feb 2025 Colossus 1 milestone (not current; C1 now ~220k+ / C1+C2 ~1.0 GW SEC)
$230.0B
xAI valuation marks, Grokipedia figures
Compute and capital
Everything on this page is free. Figures trace to primary filings and official statements, with long histories cross-checked against aggregated SEC data. Values not reported by the company are labeled as estimates in the source data.
Data sources (31)
- Index of official xAI announcements with dates for every model and product release used in the events list
- Series B funding round of 6 billion dollars, May 26, 2024
- Series C funding round of 6 billion dollars, Dec 23, 2024, plus Colossus details: 100,000 H100 GPUs, 122 day build, plan to double to 200,000
- Series E funding round of 20 billion dollars, Jan 6, 2026, over one million H100 GPU equivalents at the end of 2025, approximately 600 million monthly active users across X and Grok apps, Grok 5 in training
- Colossus build timeline: 122 days to first power, doubled in 92 days, full scale at 200,000 GPUs in February 2025, roadmap to 1 million GPUs
- SpaceX acquired xAI, announced Feb 2, 2026
- Grok-1 announcement, Nov 3, 2023
- Open release of Grok-1 weights, Mar 17, 2024
- Grok-1.5 announcement, Mar 28, 2024
- Grok-1.5 Vision preview, Apr 12, 2024
- Grok-2 beta release, Aug 13, 2024
- Grok opened to everyone on X, Dec 12, 2024
- Grok 3 beta, Feb 19, 2025
- Grok 4 release, Jul 9, 2025
- Grok Code Fast 1 release, Aug 28, 2025
- Grok 4 Fast release, Sep 19, 2025
- Grok 4.1 release, Nov 17, 2025
- Grok 4.1 Fast release, Nov 19, 2025
- Grok Imagine 1.5 preview, Jun 3, 2026
- Elon Musk post, Sep 2, 2024: Colossus 100,000 H100 cluster online, built in 122 days, verified this session via the X syndication endpoint
- Elon Musk post, Mar 28, 2025: xAI acquires X, combination values xAI at 80 billion dollars and X at 33 billion dollars, verified via the X syndication endpoint
- Elon Musk post, Aug 22, 2025: MACROHARD announced as a purely AI software company, verified via the X syndication endpoint
- Elon Musk post, Oct 12, 2025: MACROHARD scope statement, verified via the X syndication endpoint
- Elon Musk post, Sep 17, 2025: Colossus II introduced as the first gigawatt AI training cluster, verified via the X syndication endpoint
- Elon Musk post, Jan 17, 2026: Colossus 2 operational at one gigawatt with a 1.5 gigawatt upgrade stated for April, verified via the X syndication endpoint
- Elon Musk post, Mar 11, 2026: MACROHARD or Digital Optimus described as a joint xAI and Tesla project, verified via the X syndication endpoint
- Elon Musk post, Mar 14, 2026: TERAFAB project launch teaser, verified via the X syndication endpoint
- Elon Musk post, Mar 21, 2026: formal TERAFAB announcement, joint SpaceX and Tesla project targeting over a terawatt of compute per year, about 80 percent for space and 20 percent for the ground, verified via the X syndication endpoint
- Grokipedia xAI page: post money valuations for Series B, C, and E, the September 2025 valuation mark, and corporate timeline detail
- Grokipedia Colossus page: approximately 555,000 GPUs and about 2 gigawatts by February 2026, expansion phases, and the Southaven MACROHARD facility
- Grokipedia MACROHARD page: trademark filed Aug 1, 2025, public reveal Aug 22, 2025, AI agent swarm concept
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