Grok
Grok is a model family from xAI (SpaceXSI)23, with 2 assessed releases in this catalog. Licenses and availability are recorded for each release, not for the family; its releases use the xAI Community License Agreement and the Apache License 2.0.
Grok is xAI's family of large language models, first launched in November 2023 and offered mainly through the Grok assistant and the xAI API. xAI has published weights for two earlier models: Grok-1 in March 2024 and Grok 2 in August 2025. SpaceX's prospectus describes current Grok models as proprietary.1245
- Model hub: xAI on Hugging Face (external site: huggingface.co)
- Repository: Grok-1 repository (external site: github.com)
Releases assessed
Organization context
In the news
xAI makes Grok 4.7 available on its API
xAI's API release notes record that on September 21, 2026 Grok 4.7, which the notes describe as SpaceXSI's frontier model for coding, agentic tasks, and knowledge work, became available on the xAI API as grok-4.7. The entry says the model has a 500k context window, accepts text and image inputs with text-only output, supports low, medium, high (default), and xhigh reasoning effort, and is also served on the US regional endpoint. It adds that Grok 4.7 Fast, the same model, is available only in Cursor and Grok Build, not on the public xAI API. Grok 4.7 follows Grok 4.6, which the release notes list on August 12. These are hosted models; no release of weights is described. USASI has not tested Grok 4.7.
xAI makes Grok 4.5 available on its API
xAI's API release notes record that on July 8, 2026 Grok 4.5, described as a model for coding, agentic tasks, and knowledge work, became available on the xAI API with configurable reasoning effort (low, medium, or high, with high as the default). A later entry, dated July 17, says Grok 4.5 became available in the API console in the EU. The release notes describe a hosted model and do not describe a release of weights. USASI has not tested Grok 4.5.
U.S. eligibility
Eligible · basis: U.S. headquarters
Developed by xAI, whose AI operations are headquartered in Palo Alto, California, according to the June 2026 prospectus of its parent, Space Exploration Technologies Corp., a Texas corporation.1
Sources
This listing is not an endorsement, a safety assessment, or a federal approval.
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APA style
USASI. (2026, October 11). Grok. United States of America Superintelligence. https://unitedstatesofamericasuperintelligence.com/open/grok/
BibTeX
@misc{usasi_grok,
author = {{USASI}},
title = {Grok},
year = {2026},
month = oct,
howpublished = {\url{https://unitedstatesofamericasuperintelligence.com/open/grok/}},
note = {United States of America Superintelligence. Last updated 2026-10-11}
}The date is when this page was last updated. Add the date you read it if your style needs one.
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