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GenAI.mil Is Now the Marine Corps' Official AI Platform

MARADMIN 018/26·January 21, 2026·2 min read·Official source
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The Marine Corps has designated genai.mil as the official enterprise generative AI (GenAI) platform, effective immediately. This supersedes MARADMIN 496/24. NIPRGPT is being shut down. If you've been using it, it's time to move to the new platform.

★ Affects all reservists: GenAI.mil is authorized right now for all Marines on government-furnished equipment, including for Controlled Unclassified Information (CUI), but not for PII, PHI, or classified.

Who it affects

All Marines, civilian employees, and contractors using government-furnished equipment. This isn't limited to active duty. If you have access to a government computer and a CAC, this applies to you.

What you need to do

  1. Go to https://genai.mil and log in with your CAC.
  2. Review the training resources at https://genai.mil/resources/training before using it for official work.
  3. Treat every output as a draft. You are accountable for anything you produce using this tool. Verify before you use it officially.
  4. Stop using NIPRGPT. It's being sunset and will stop being available.

A few things to keep in mind before you start using it:

  • You can use it with CUI.
  • You cannot use it with PII, PHI, or classified information. This is a hard line.
  • The AI can be wrong, biased, or incomplete. That's not a disclaimer, it's how these systems work. Check your outputs.
  • Other approved platforms like CamoGPT remain authorized for their specific approved uses. This MARADMIN doesn't kill those.

Key dates

  • Now: GenAI.mil is live and authorized for use.
  • NIPRGPT sunset: No specific date given. It's in the process of shutting down. Don't build workflows around it.
  • Future capabilities (higher-classification networks, Marine Corps data integration, API access): Timeline not yet published.

The official version

This is MARADMIN 018/26.

It supersedes MARADMIN 496/24. References include DoD Interim Guidance on GenAI use and Department of the Navy guidance on GenAI and large language models.

For platform issues or general feedback, contact osw.genai@mail.mil. For unresolved problems, reach the POCs listed in the MARADMIN: Capt Christopher Clark at christopher.d.clark.mil@usmc.mil or Dr. Colin Crosby at colin.crosby@usmc.mil.

This is written by a reservist, for reservists. It is not an official publication of HQMC or MARFORRES. Always verify guidance with your command or unit S-1 before acting on any article or summary.

Resources & references

The documents this bulletin points to, with a plain-English note on why each matters. Links marked CAC required need a government login.

  • DoD Interim Guidance on Use of Generative AI (MCO dated 20231015)Reference

    This is the Department of Defense interim guidance governing how GenAI tools may be used. The MARADMIN cites it as the authority underpinning the Marine Corps decision to consolidate general-purpose GenAI usage onto GenAI.mil.

  • Department of the Navy Guidance on Use of GenAI and LLMs (MCO dated 20230906)Reference

    This is the Department of the Navy's guidance on generative AI and large language models. Along with the DoD guidance, it is the policy basis for standardizing Marine Corps GenAI usage on the enterprise platform.

  • MARADMIN 496/24 (superseded)MARADMIN

    This was the previous Marine Corps MARADMIN on generative AI. It has been superseded by this message, so reservists who have seen it before should disregard it and follow the current guidance instead.

  • USMC Guidance on Generative AI (MARADMIN 056/25)MARADMIN

    This MARADMIN communicated the release of official USMC guidance on generative AI. The current message cites it as the authority holding users accountable for critically evaluating and verifying any output from GenAI.mil before using it for official purposes.

  • GenAI.mil platform login

    This document is an error page explaining that GenAI.mil, the Department of Defense's generative AI platform, is only accessible from DoD networks. If you are trying to reach it from outside a DoD network, it will block you and direct you to contact your command's IT service desk.

  • GenAI.mil self-help training resources

    This link requires access from within DoD networks, so it cannot be reached from a personal device or outside connection. If you're trying to access GenAI.mil, you'll need to do so from a government network or contact your command's IT service desk.

  • GenAI.mil frequently asked questions

    This page requires access from a DoD network, so it cannot be previewed here. If you are trying to reach Marine Corps generative AI resources, you will need to connect through an authorized DoD network.

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