# SpaceXAI — AI model releases

SpaceXAI has 15 AI model releases tracked on AI Release Tracker, from Nov 3 2023 through Jul 8 2026. Elon Musk's AI company building the Grok series of models. Founded in 2023 as xAI, now part of SpaceX.

Official site: https://x.ai

## Releases, newest first

| Model | Release date | Licensing | Context window | Page |
| --- | --- | --- | --- | --- |
| Grok 4.5 | Jul 8 2026 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4.5 |
| Grok 4.3 Beta | Apr 17 2026 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4.3-beta |
| Grok 4.20 Beta | Feb 17 2026 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4.20-beta |
| Grok 4.1 Fast | Nov 19 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4.1-fast |
| Grok 4.1 | Nov 17 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4.1 |
| Grok 4 Fast | Sep 19 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4-fast |
| Grok Code Fast 1 | Aug 28 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-code-fast-1 |
| Grok 2.5 | Aug 23 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-2.5 |
| Grok 4 | Jul 9 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4 |
| Grok 4 Heavy | Jul 9 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-4-heavy |
| Grok 3 | Feb 17 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-3 |
| Grok 3 mini | Feb 17 2025 | Proprietary | — | https://aireleasetracker.com/model/xai/grok-3-mini |
| Grok‑2 | Aug 14 2024 | Proprietary | — | https://aireleasetracker.com/model/xai/grok‑2 |
| Grok‑1.5 | Mar 29 2024 | Proprietary | — | https://aireleasetracker.com/model/xai/grok‑1.5 |
| Grok‑1 | Nov 3 2023 | Open Weight | — | https://aireleasetracker.com/model/xai/grok‑1 |


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Canonical page: https://aireleasetracker.com/company/xai
Full dataset: https://aireleasetracker.com/llms-full.txt · JSON: https://aireleasetracker.com/models.json
Source: AI Release Tracker (https://aireleasetracker.com). Benchmark scores are the figures published by the releasing lab at launch.