# SpaceXSI — AI model releases

SpaceXSI has 21 AI model releases tracked on AI Release Tracker, from Nov 3 2023 through Sep 21 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.

Official site: https://x.ai

## Releases, newest first

| Model | Release date | Licensing | Context window | Page |
| --- | --- | --- | --- | --- |
| Grok 4.7 | Sep 21 2026 | Closed | 500k | https://aireleasetracker.com/model/xai/grok-4.7 |
| Grok 4.6 | Aug 12 2026 | Closed | 500k | https://aireleasetracker.com/model/xai/grok-4.6 |
| Grok 4.5 | Jul 8 2026 | Closed | 500k | https://aireleasetracker.com/model/xai/grok-4.5 |
| Composer 2.5 | May 18 2026 | Closed | — | https://aireleasetracker.com/model/xai/composer-2.5 |
| Grok 4.3 Beta | Apr 17 2026 | Closed | — | https://aireleasetracker.com/model/xai/grok-4.3-beta |
| Composer 2 | Mar 19 2026 | Closed | — | https://aireleasetracker.com/model/xai/composer-2 |
| Grok 4.20 Beta | Feb 17 2026 | Closed | — | https://aireleasetracker.com/model/xai/grok-4.20-beta |
| Composer 1.5 | Feb 9 2026 | Closed | — | https://aireleasetracker.com/model/xai/composer-1.5 |
| Grok 4.1 Fast | Nov 19 2025 | Closed | 2M | https://aireleasetracker.com/model/xai/grok-4.1-fast |
| Grok 4.1 | Nov 17 2025 | Closed | — | https://aireleasetracker.com/model/xai/grok-4.1 |
| Composer | Oct 29 2025 | Closed | — | https://aireleasetracker.com/model/xai/composer |
| Grok 4 Fast | Sep 19 2025 | Closed | 2M | https://aireleasetracker.com/model/xai/grok-4-fast |
| Grok Code Fast 1 | Aug 28 2025 | Closed | 256k | https://aireleasetracker.com/model/xai/grok-code-fast-1 |
| Grok 2.5 | Aug 23 2025 | Open Weight | — | https://aireleasetracker.com/model/xai/grok-2.5 |
| Grok 4 | Jul 9 2025 | Closed | 256k | https://aireleasetracker.com/model/xai/grok-4 |
| Grok 4 Heavy | Jul 9 2025 | Closed | — | https://aireleasetracker.com/model/xai/grok-4-heavy |
| Grok 3 | Feb 17 2025 | Closed | 1M | https://aireleasetracker.com/model/xai/grok-3 |
| Grok 3 mini | Feb 17 2025 | Closed | 128k | https://aireleasetracker.com/model/xai/grok-3-mini |
| Grok‑2 | Aug 13 2024 | Closed | 128k | https://aireleasetracker.com/model/xai/grok‑2 |
| Grok‑1.5 | Mar 28 2024 | Closed | 128k | https://aireleasetracker.com/model/xai/grok‑1.5 |
| Grok‑1 | Nov 3 2023 | Open Weight | 8k | https://aireleasetracker.com/model/xai/grok‑1 |


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Canonical page: https://aireleasetracker.com/company/xai
Site index: https://aireleasetracker.com/llms.txt
Source: AI Release Tracker (https://aireleasetracker.com). Most benchmark scores come from lab launch material; gathered results identify the leaderboard that published them.