OpenAI used its DevDay 2026 event to unveil a $500-per-month Pro plan that bundles the company's highest usage allowance with a new Ultrafast tier delivering up to 8x faster token generation in Codex1. The company also announced a new version of its Sol model.
The announcements landed during a DevDay keynote that OpenAI had previewed with more than 20 launches teased[1].
The $500 price point aligns with a leak surfaced one day earlier by developer Tibor Blaho, who found the string "PROMAX" while reverse-engineering ChatGPT's web source code2. Blaho inferred that OpenAI was preparing a tier above the existing $200-per-month Pro, with pricing in the $500–$600 range. OpenAI had not confirmed the code discovery prior to the DevDay announcement. The $200 ChatGPT Pro tier had recently been closed to new users, with OpenAI citing system-load management.
The plan OpenAI formally announced carries a $500 monthly fee and is labeled "Pro" rather than "Pro Max". ANALYSIS Whether the announced tier corresponds exactly to the code Blaho found, or whether a separate Pro Max tier remains in development, is not addressed in the available reporting.
The Ultrafast tier, bundled with the new Pro plan, targets Codex users with up to 8x faster token generation. OpenAI also shipped a new version of Sol, though the available reporting does not detail the model's capability changes.
ANALYSIS The Ultrafast speed multiplier in Codex suggests OpenAI is betting that developer-facing throughput, not just model capability, can justify premium pricing.
The DevDay rollout follows a turbulent period for OpenAI's model pipeline: the company recently scrapped the public release of GPT-6.1 Astra after the model failed internal safety and alignment audits[3].