What will the combined annualized (run-rate) revenue (USD billions) of SpaceX's AI segment — xAI/Grok plus Cursor/Anysphere — be as of December 31, 2026?

SpaceX’s newly reported AI segment includes xAI/Grok products, X advertising, Cloud Services (compute leasing), and, upon closing, Cursor/Anysphere. As of Q2 2026, AI segment revenue annualized to roughly $10.2B, but massive contracted ramps point to a December 2026 exit rate near $47–51B. Management guidance aims for a company-wide >$100B annualized run-rate by December, which mathematically implies the AI segment scaling toward the $65–75B range as data center capacity expands past 2 GW 3 sources. The central estimate builds heavily on explicitly disclosed, signed compute contracts and the expected Q3 consolidation of Cursor.

Compute Leases (The Dominant Driver) The primary engine of AI revenue is the Colossus compute capacity. Known base-case contracts total approximately $27.8B annualized: Anthropic at $1.25B/month ($15B/yr) 2 sources, Google at $920M/month ($11B/yr) ramping from October 2 sources, and Reflection AI at $150M/month (~$1.8B/yr) 2 sources. Furthermore, management recently disclosed an additional $6.7B in six-month cloud services agreements that will also begin ramping in October 2026 2 sources. Factoring in a plausible execution ramp for these newer agreements yields an additional $10–13B in annualized December run-rate, bringing the infrastructure total alone to roughly $38–41B.

Applications & Consumer Products On the software side, Cursor/Anysphere surpassed $4B in annualized recurring revenue (ARR) in early June 2026, up from $2B in February, with internal targets exceeding $6B by year-end 2 sources. The $60B all-stock acquisition is navigating final regulatory hurdles and is expected to close in Q3, meaning Cursor should be fully consolidated into the December exit rate 2 sources. Standalone xAI/Grok subscriptions, API access, and X advertising currently run at approximately $4–5B annualized nextgcomm.com. Together, the application side of the segment securely adds roughly $10–12B to the bottom-up run-rate.

Key Uncertainties & Execution Risks The wide distribution is driven by stringent contract contingencies and hardware delivery timelines. The most significant downside risk is the Anthropic contract, which Musk clarified is a 180-day lease with a 90-day mutual cancellation clause; this capacity could be renegotiated or pulled back for internal xAI training before year-end 2 sources. Similarly, Google's contract contains a termination right or pro-rata fee reduction if SpaceX misses critical GPU delivery milestones by September 30 2 sources. Further downside stems from potential regulatory delays that could push the Cursor acquisition close past December 31. Conversely, the upper tail (pushing past $70B) assumes management executes flawlessly on their company-wide target, aggressively monetizes >2 GW of capacity, and secures rumored multibillion-dollar Pentagon or sovereign compute deals 2 sources.