OpenAI Reportedly Planning $500 ChatGPT 'Pro Max' Plan: Fastest Work & Codex Access, Potential Cerebras Integration

OpenAI is reportedly preparing to launch a premium ChatGPT subscription plan called 'Pro Max' priced at $500 per month, although the company has not yet confirmed this officially.

On Thursday (24th), tech intelligence account TestingCatalog reported that OpenAI is planning to introduce the 'Pro Max' plan, potentially priced at $500 per month, and possibly supported by infrastructure from Cerebras (CBRS-US).

If launched, this plan would represent another way for OpenAI to charge higher fees for advanced features and high-volume computational demands.

According to TestingCatalog, the key differences between Pro Max and the current Pro plan include the addition of 'Fastest Work and Codex' functionality, along with potentially higher usage limits.

However, current reports do not specify exactly how much faster the 'fastest work speed' will be, how Codex access will be implemented, or whether Cerebras will ultimately provide computational support for Pro Max.

TestingCatalog links this rumored plan to 'long-running tasks'—scenarios where ChatGPT needs to operate continuously over an extended period, rather than responding to single queries.

Currently, OpenAI's official pricing page lists six ChatGPT plans: Free, Go, Plus, Pro, Business, and Enterprise. The 'Pro Max' option does not yet appear on the site.

TestingCatalog suggests that related information might be unveiled during OpenAI DevDay 2026, scheduled for September 29, 2026, in San Francisco. However, this remains speculative, as OpenAI's official event announcement does not mention the Pro Max plan.