ChatGPT's Deep research gets a GPT-5.2 brain

OpenAI just announced that Deep Research in ChatGPT is now powered by its GPT-5.2 model, rolling out to users starting today.

Upgrading the research engine

According to a brief announcement from OpenAI, the update transitions the Deep Research feature to the GPT-5.2 architecture, bringing alongside it a wave of additional improvements.

While the company didn't publish an in-depth changelog or benchmarks with the post, the rollout is officially underway.

Why it matters

For anyone relying on ChatGPT for complex desk research, literature reviews, or multi-step problem solving, this is worth testing as soon as access hits your account. Deep research tasks stress-test a model's long-context reasoning and consistency more than casual chat does.

We think this is a smart deployment move. Instead of just treating GPT-5.2 as a milestone on a benchmark chart, putting it directly behind an agentic workflow that saves hours of real-world labor gives users an immediate reason to care about the new model.