Claims and evidence
- Announced Primary source[1]page date
- Released The model card says the initial Grok-1 was released in Nov 2023. The announcement of 2023-11-03 offered early access to a limited number of users in the United States through a waitlist. Primary source[3]Model details
- Base model weights released under Apache 2.0 The released checkpoint is the raw base model from the pre-training phase that concluded in October 2023, not fine-tuned for dialogue. Primary source[2]page date [4]License
- Status AvailableRefers to the open base-model weights, which remain downloadable from xAI's Hugging Face and GitHub repositories. xAI published no end-of-service notice for the fine-tuned Grok-1 that powered Grok at launch. Primary source[5]Download instruction [4]Downloading the weights
- Input textThe announcement says Grok did not yet have other senses such as vision and audio. Primary source[1]Research at xAI: Multimodal capabilities
- Output text Primary source[3]Model details; Intended uses
- Open weights YesBase model weights and network architecture under the Apache 2.0 licence, released 2024-03-17. Primary source[2] [4]License [5]
- Context window 8,192 tokens tokens Primary source[3]Model details [4]Model Specifications
- Parameters 314BMixture-of-Experts model; xAI says 25% of the weights are active on a given token (2 of 8 experts per the repository). Primary source[2]Model Details [4]Model Specifications
- Access consumer app, Open-weights downloadConsumer access started as limited early access for users in the United States; the open weights followed in March 2024. Primary source[1]Early Access to Grok [2]
Lineage
Predecessors
No known predecessor.
Successors
- Grok-1.5 · 28 March 2024
Based on
Not derived from another model.
Variants and derived
None recorded.
Siblings
None recorded.
All ancestors
None.
All descendants
- Grok-1.5 · 28 March 2024
- Grok-1.5V · 12 April 2024
- Grok-2 · 13 August 2024
- Grok-2 (December 2024 revision) · 12 December 2024
- Grok 3 · 19 February 2025
- Grok 4 · 9 July 2025
- Grok 4.1 · 17 November 2025
- Grok 4.20 · 17 February 2026
- Grok 4.3 · 17 April 2026
- Grok 4.5 · 16 July 2026
- Grok 4.6 · 12 August 2026
- Grok 4.7 · 21 September 2026
Variants
No variants recorded in this record.
Related AI Radar coverage
AI Radar coverage starts in June 2026; no coverage linked yet.