# CAISI Signs AI Reviews With Google, Microsoft > Source: [https://botensten.com/articles/caisi-google-microsoft-xai-ai-reviews](https://botensten.com/articles/caisi-google-microsoft-xai-ai-reviews) (canonical) > Author: iCharles News — Botensten, https://botensten.com > Published: 2026-06-26 ## TL;DR On May 5, 2026, the Center for AI Standards and Innovation (CAISI) signed voluntary pre-deployment review agreements with Google DeepMind, Microsoft, and xAI. The move extends a framework that previously covered only OpenAI and Anthropic since 2024. CAISI has completed more than 40 evaluations since then. The agreements give the US government access to AI models before public release — but CAISI has no legal power to block or delay any deployment. ## What did CAISI announce on May 5, 2026? On May 5, 2026, the Center for AI Standards and Innovation signed pre-deployment AI model review agreements with Google DeepMind, Microsoft, and xAI. **CAISI** is a unit within the Department of Commerce that evaluates frontier AI models for national security concerns. The new deals complete what CAISI described as comprehensive coverage of the frontier AI sector, [according to Reuters](https://www.reuters.com/legal/litigation/microsoft-xai-google-will-share-ai-models-with-us-govt-security-reviews-2026-05-05/). Before May 5, only OpenAI and Anthropic were part of this framework, under agreements in place since 2024. ## Who is covered under the new framework? The five labs now participating are OpenAI, Anthropic, Google DeepMind, Microsoft, and xAI. The existing agreements with OpenAI and Anthropic were also renegotiated on May 5. Those updated terms align with the Trump administration's AI Action Plan, which designates CAISI as the primary government contact for national security model assessments. | Lab | Agreement status before May 5 | Status after May 5 | |---|---|---| | OpenAI | Covered since 2024 | Renegotiated | | Anthropic | Covered since 2024 | Renegotiated | | Google DeepMind | Not covered | Newly signed | | Microsoft | Not covered | Newly signed | | xAI | Not covered | Newly signed | ## What triggered the expansion? The expansion was accelerated by the Mythos crisis. That event involved an Anthropic model whose capabilities raised immediate national security concerns — specifically around its potential use in cyberattacks. The crisis created political pressure for a more comprehensive evaluation system covering all major frontier labs, [as The Bright Minded reported](https://www.thebrightminded.com/news/caisi-ai-model-reviews-2026-five-labs-one-voluntary-agreement-and-what-it-can-actually-do/). ## How does the evaluation process work? Labs hand over model versions with safety restrictions stripped back. This lets evaluators probe capabilities that would be filtered out in a public release. Evaluators from across the US government participate through the TRAINS Taskforce, an interagency group focused on AI national security concerns. The agreements also support testing in classified environments. CAISI has completed more than 40 evaluations since 2024. That includes assessments of models not yet publicly available at the time of review. ## What can CAISI actually do with its findings? Here's what we know so far: not much, legally. CAISI has fewer than 200 staff. It has no legal power to delay or block a deployment. Companies can withdraw from the agreements at any time. The framework is entirely voluntary. CAISI Director Chris Fall described independent measurement science as essential to understanding frontier AI and its national security implications. But the voluntary structure is both what makes participation viable for companies and what limits what the government can do with its findings. The strategic logic for companies is clear from the sources. Labs that submit models voluntarily position themselves as responsible actors ahead of formal regulation. They also maintain government relationships and reduce the risk of more restrictive oversight being imposed externally. ## What gap does the framework close — and what gap remains? Before May 5, three of the five most capable AI labs were releasing models to the public with no prior government evaluation. The new agreements close that specific gap. The remaining structural gap is different. A company that concludes its model has dangerous capabilities could, under the current arrangement, choose not to submit it — and publish it anyway. The framework provides oversight only as long as every participating lab decides that submitting models serves their interests. This matters for builders and developers working across sectors. The framework covers models deployed in financial services, defense, and other areas where frontier AI is being integrated into high-stakes decisions. For context on how AI infrastructure demands are scaling alongside these policy moves, the [NVIDIA Rubin cooling](/articles/nvidia-rubin-45c-liquid-cooling-zero-water) story shows the hardware side of that growth. And as AI becomes more embedded in commercial products, questions around [AI influencers and fake content](/articles/ai-influencers-brands-fake-social) show how deployment without oversight can create real-world problems fast. The Mythos crisis made the case for pre-deployment review: a model with national security implications is a different problem to manage before deployment than after it is already in use. ## What are the key facts about CAISI's structure? - CAISI operates within the Department of Commerce - It has fewer than 200 staff - It has completed more than 40 evaluations since 2024 - It has no legal authority to block or delay a model release - All five lab agreements are voluntary and can be withdrawn at any time - The TRAINS Taskforce is the interagency group conducting evaluations alongside CAISI - Testing can occur in classified environments For those tracking broader government and market moves — including how institutions are repositioning around AI and tech — the [SAMA asset managers](/articles/sama-billions-global-asset-managers-redemptions) story and the [X Cloudflare outage](/articles/x-outage-cloudflare-june-2026) report both show how quickly infrastructure and policy decisions ripple through connected systems. The most important confirmed fact from the May 5 announcement: CAISI now has voluntary pre-deployment review agreements with all five major frontier AI labs, and the existing OpenAI and Anthropic agreements have been renegotiated to align with the Trump administration's AI Action Plan. ## Frequently asked questions **What is CAISI and what does it do?** CAISI stands for the Center for AI Standards and Innovation. It is a unit within the US Department of Commerce that conducts pre-deployment evaluations of frontier AI models. It has fewer than 200 staff and works with an interagency group called the TRAINS Taskforce to assess AI models for national security concerns, including in classified environments. **Which AI labs signed agreements with CAISI on May 5, 2026?** Google DeepMind, Microsoft, and xAI signed new agreements with CAISI on May 5, 2026. Existing agreements with OpenAI and Anthropic, in place since 2024, were also renegotiated on the same date. This brought the total number of frontier labs under the voluntary review framework to five. **Can CAISI block an AI model from being released?** No. CAISI has no legal authority to delay or block a model deployment. The agreements are entirely voluntary, and companies can withdraw from them at any time. The government can conduct evaluations and flag concerns, but it has no enforcement mechanism to prevent a lab from releasing a model based on what a review finds. **What was the Mythos crisis and why did it matter?** The Mythos crisis involved an Anthropic model whose capabilities raised immediate national security concerns, specifically around its potential use in cyberattacks. The episode created political pressure to expand the CAISI review framework beyond OpenAI and Anthropic to cover all major frontier labs, accelerating the May 5, 2026 agreements with Google DeepMind, Microsoft, and xAI. **How many AI model evaluations has CAISI completed?** CAISI has completed more than 40 evaluations since 2024, according to the agency's May 5, 2026 announcement. Those evaluations include assessments of models that were not yet publicly available at the time of review. Labs submit model versions with safety restrictions stripped back so evaluators can probe capabilities that would be filtered in a public release.