SpaceXSI
21 releases · Nov 2023 – Sep 2026
Elon Musk's AI company building the Grok series of models. Founded in 2023 as xAI, merged into SpaceX as SpaceXAI in 2026 and renamed SpaceXSI (SpaceX Super Intelligence) that October. Cursor (Anysphere) and its Composer coding models were acquired in 2026 and are tracked here. AI Release Tracker has logged 21 SpaceXSI models, from Grok‑1 (Nov 3 2023) through Grok 4.7 (Sep 21 2026). Every release below links to a dedicated page with benchmarks, parameters, and context window.
A new SpaceXSI model typically arrives about every 35 days, with the next projected around Monday, Oct 26, 2026. Its strongest benchmark results to date include Supabase Evals (89.9%, on Grok 4.7), Harvey's Legal Agent Benchmark (19.6%, on Grok 4.7), and Next.js Evals (94%, on Grok 4.7). 2 of the 21 models tracked here are open-weight or open-source; the rest are closed.
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Release cadence
Releases by year
Year-over-year totals for SpaceXSI. The current year is partial.
Releases by day of week
Which days of the week SpaceXSI ships on.
Best benchmark scores
All releases
21 releases · Nov 3 2023 – Sep 21 20262026
8 releases2025
10 releases2024
2 releases2023
1 releaseFrequently asked questions
The most recent SpaceXSI model tracked on AI Release Tracker is Grok 4.7, released on Sep 21 2026.