OpenAI is preparing a $500 ChatGPT Pro Max plan with faster Codex
OpenAI is testing an unannounced $500 monthly ChatGPT Pro Max tier that advertises faster Codex and frontier-model access.
OpenAI's subscription interface has begun showing an unannounced ChatGPT Pro Max tier at $500 per month, or about $600 with VAT. The listing advertises fastest Work and Codex, access to the most capable frontier models, maximum memory, 100GB of file storage, and early feature access. Existing Pro plans cost $100 and $200, and new sign-ups for the $200 tier have been paused since September 10. Observers speculate that Cerebras hardware, previously used for Codex-Spark above 1,000 tokens per second and GPT-5.6 Sol Ultrafast mode, could power the faster tier, but neither company has confirmed that.
- Unannounced Pro Max appears beside Plus and Pro at $500, or $600 with VAT.
- Listing promises fastest Codex, frontier models, maximum memory, and 100GB storage.
- $200 Pro sign-ups and upgrades have been paused since September 10.
- Cerebras link is speculation; OpenAI has not confirmed limits or a launch date.
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OpenAI appears to be preparing a new ChatGPT Pro Max subscription that could cost $500 per month, but it's unclear when it'll begin rolling out.
OpenAI users, particularly power users, have been requesting more usage than the existing $200 plan offers for a while, so the $500 plan isn't just coming out of nowhere.
Right now, we don't know when you'll be able to subscribe to the $500 plan, but as spotted by TestingCatalog, the unannounced plan has started appearing in ChatGPT's subscription interface alongside Plus and existing Pro options.
Source: OpenAI / TestingCatalog on X
One version of the page lists Pro Max at $500 per month, while another shows $600 after local taxes or VAT are included.
So far, the most interesting difference in OpenAI's description is "Fastest Work and Codex."
I also noticed that ChatGPT's new plan teases access to the company's most capable frontier models, maximum memory, 100GB of file storage, and early access to new features.
It is worth noting that the $200 plan also promises early access, so we are not sure if that capability is going away and becoming exclusive to the $500 plan.
OpenAI has not announced Pro Max, so we don't know its exact usage limits yet. It could also offer substantially higher allowances than the existing Pro plans.
ChatGPT Pro Max could use Cerebras for faster AI
There's another interesting possibility behind the "Fastest Work and Codex" wording, and the guess is that it could use Cerebras.
For those unaware, OpenAI has been deploying more Cerebras hardware for ultra-fast AI inference, but we haven't seen anything recently from the company on that front.
The most recent development was from early this year, when Codex-Spark launched on Cerebras at more than 1,000 tokens per second, and OpenAI later demonstrated GPT-5.6 Sol running at up to 750 output tokens per second in its Cerebras-powered Ultrafast mode.
It is entirely possible that Cerebras is a likely candidate for powering at least some of Pro Max's faster Work and Codex experience, although neither OpenAI nor Cerebras has confirmed that connection.
Right now, ChatGPT offers Pro tiers at $100 and $200 per month, but new sign-ups and upgrades to the ChatGPT Pro $200 plan have been temporarily paused since September 10.
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