SpaceXAI
Elon Musk's AI company building the Grok series of models. Founded in 2023 as xAI, now part of SpaceX. AI Release Tracker has logged 15 SpaceXAI models, from Grok‑1 (Nov 3 2023) through Grok 4.5 (Jul 8 2026). Every release below links to a dedicated page with benchmarks, parameters, and context window.
A new SpaceXAI model typically arrives about every 59 days, with the next projected around Aug 7, 2026. Its strongest benchmark results to date include BullshitBench v2 (56%, on Grok 4.20 Beta), Arena Elo (Code) (1549, on Grok 4.5), and Next.js Evals (83%, on Grok 4.5). 1 of the 15 models tracked here is open-weight or open-source; the rest are proprietary.
Release cadence
Expected next releaseIn 5 days
Aug 7, 2026
Days since last releaseTypically every 59 days
25
Recent intervals
8 Jul 2026 · Grok 4.5
82
17 Apr 2026 · Grok 4.3 Beta
59
17 Feb 2026 · Grok 4.20 Beta
90
19 Nov 2025 · Grok 4.1 Fast
2
17 Nov 2025 · Grok 4.1
59
Best benchmark scores
All releases
15 releases · Nov 3 2023 – Jul 8 20262025
9 releases2024
2 releases2023
1 releaseSpaceXAI — frequently asked questions
- What is the latest SpaceXAI AI model?
- The most recent SpaceXAI model tracked on AI Release Tracker is Grok 4.5, released on Jul 8 2026.
- How many AI models has SpaceXAI released?
- AI Release Tracker tracks 15 SpaceXAI model releases, from Grok‑1 on Nov 3 2023 through Grok 4.5 on Jul 8 2026.
- What models has SpaceXAI released?
- SpaceXAI's tracked releases, newest first: Grok 4.5 (Jul 8 2026), Grok 4.3 Beta (Apr 17 2026), Grok 4.20 Beta (Feb 17 2026), Grok 4.1 Fast (Nov 19 2025), Grok 4.1 (Nov 17 2025), Grok 4 Fast (Sep 19 2025), Grok Code Fast 1 (Aug 28 2025), Grok 2.5 (Aug 23 2025), Grok 4 (Jul 9 2025), Grok 4 Heavy (Jul 9 2025), Grok 3 (Feb 17 2025), Grok 3 mini (Feb 17 2025), Grok‑2 (Aug 14 2024), Grok‑1.5 (Mar 29 2024), Grok‑1 (Nov 3 2023).
- Does SpaceXAI release open models?
- Partly. 1 of 15 tracked SpaceXAI releases publish downloadable weights; the remaining 14 are proprietary.
- How often does SpaceXAI release new models?
- Across its 15 tracked releases, SpaceXAI has shipped a new model roughly every 70 days on average — about 5.2 releases per year.