Did the $100 Plan Affect the GPT-5.4 Pro Model?

This Reddit thread likely discusses community questions around OpenAI's new $100/month ChatGPT Pro tier and its implications for access to GPT-5.4 Pro. OpenAI introduced a $100/month Pro tier positioned between Plus ($20) and the existing $200 Pro plan, with the key difference between the two Pro tiers being usage limits — the $100 plan offers 5x Plus usage, while the $200 plan offers 20x. The new tier retains all existing Pro features, including access to the exclusive Pro model, with OpenAI's release notes confirming the $100 plan includes unlimited access to GPT-5.4 and access to GPT-5.4 Pro. A key point of confusion is that GPT-5.4 Pro is not a universal paid-tier default — many users assume that any paid ChatGPT plan automatically grants access to the highest GPT-5.4 mode, but the current structure does not support that assumption.

Source: r/ChatGPT | 2026-04-13