GPT-5.5 Spud Rolls Out to ChatGPT Paid Plans and Codex

OpenAI didn’t leave much room between GPT-5.4 and GPT-5.5. The new model arrived six weeks later and just a week after Claude Opus 4.7, which tells you something. These launches are starting to feel less like rare events and more like product updates to catch up to the competition. 

GPT-5.5 is rolling out to paid ChatGPT plans and Codex first. The API is not live yet.

What OpenAI is selling here is not just raw intelligence. It is reliability. The company says GPT-5.5 is better with vague, multi-step work. The pitch is simple enough. Give it a messy job, let it figure out the path, use tools, check its own output, and keep going. 

The benchmarks as usual are an upgrade over the competition and the previous models, but there's more to it than what the numbers tell. Brockman described it as “a faster, sharper thinker for fewer tokens,” and this gets to the business case better than the raw number does.

Also Read: Why Claude Opus 4.7 Feels Different in Practice

OpenAI is also being careful about where the model shows up. GPT-5.3 remains as the default for the logged-in ChatGPT users. GPT-5.5 Thinking is rolling out more gradually, whereas GPT-5.5 Pro sits further up in the pay ladder. For a company calling this a meaningful step forward, that staggered release is worth paying attention to. 

The ambition is obvious. And so is the restraint.