Frontier builder · United States

SpaceX / xAI

Frontier IC25 · Edition 2026.3 · Evidence reviewed October 8, 2026 UTC

SpaceX combines xAI’s Grok model program and Colossus data centers with X distribution, Cursor coding applications, Starlink connectivity and launch infrastructure. SpaceX is both a model builder and a compute supplier to other model builders.

Selected for Grok as a frontier-builder entry; the group evidence separately captures infrastructure supply, distribution and deployment. Primary roster placement is not an assessment of the group’s complete value-chain role.

Group lens: Space Exploration Technologies Corp., publicly traded as SPCX since June 12, 2026. xAI joined SpaceX on February 2; Cursor acquisition completed August 14. Model tariffs and specifications describe only the named SpaceXAI endpoint. Tesla is outside this corporate perimeter.

Selected model

Grok 4.7 · grok-4.7

Standard first-party synchronous API; uncached text tokens, prompt ≤100K.

500,000 · Context window

Scope and limitations

Current x.ai docs and legal pages use SpaceXAI; display preserves familiar xAI name alongside current branding.
The model page states no text output limit. Do not convert that claim into an infinite numeric output limit or treat null as zero.
Reasoning cannot be disabled and its tokens are billed as total consumption.
Fast variant is unavailable on the public xAI API and is excluded; available in Cursor and Grok Build with separate pricing.
This selection does not describe separately released older Grok weight snapshots.
SpaceX nameplate compute is installed GPUs multiplied by their all-in power draw. It excludes facility overhead and is not actual consumption, utilization or common-workload performance.
Q2 2026 infrastructure metrics and earnings release are interim company disclosures; the financial statements are unaudited.
Contracted sales include recognized and deferred amounts in the enforceable period; $14.1B contracted sales is not annual recognized revenue. Do not add $1.6B incremental Q2 revenue to contracted sales.
FY2025 revenue is retrospectively recast under common-control accounting to include xAI and X; it excludes the later Cursor acquisition. Cursor remains a separate product entry, not an independent group for aggregation.
Anthropic and Google contracted GPU allocations are not independently observed utilization or extra GPUs to add to the reported fleet.
Starlink subscribers are service lines, not people or Grok users. Orbital AI capacity remains prospective.

Original sources

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