OpenAI has launched a new $100 per month Pro plan for ChatGPT, targeting Anthropic’s Claude Max, which is also priced at $100 a month. The new plan offers five times more Codex usage than Plus and access to the same model suite as the $200 tier. A launch promotion temporarily doubles this advantage, with subscribers receiving ten times the Codex usage of Plus through May 2026. This move follows Codex crossing three million weekly users on 8 April, a growth rate the company describes as a 5x increase in three months. Despite the difference in usage limits, both Pro tiers give access to same features as the existing $200 Pro tier. The $100 plan is designed to capture the usage pattern that the new tier is intended to serve.