OpenAI Prepares $500 Monthly ChatGPT Pro Max Tier for High-Performance Computing Workloads

OpenAI is preparing a $500-per-month ChatGPT Pro Max subscription tier discovered in code on September 24, 2026, positioning a new ultra-premium tier for developers running long-duration agentic and coding workflows. The plan, uncovered by researchers TestingCatalog and Tibor Blaho in unreleased ChatGPT subscription strings, has not yet received official confirmation from OpenAI, but industry analysts expect details to surface at the company's DevDay conference on September 29.