OpenAI will extend ChatGPT access to roughly 23 million US public-sector employees across federal, state, local and tribal governments under a new pricing structure taking effect October 1, 2026. The rollout replaces a $1-per-agency pilot launched in August 2025 through the US General Services Administration, which provided ChatGPT Enterprise access to 3.5 million federal employees and reportedly generated $1.4 billion in cost savings. The new model uses usage-based pricing with a 50% discount for all eligible governments for more than two years. Purchases will be distributed through the GSA’s OneGov marketplace, while OpenAI for Government emphasizes compliance with federal security standards including FedRAMP. ChatGPT Enterprise is designed to isolate agency conversations from training data. The expansion follows the Trump administration’s AI Action Plan and broadens OpenAI’s competition with providers such as Anthropic in government AI procurement.