OpenAI is introducing a new version of its ChatGPT deep research tool that it says is cheaper to operate. The “lightweight” model is available now to free users, as well as those on several of the company’s paid tiers.

ChatGPT Free users are getting a lightweight version of Deep Research, and Plus users will get access too after they reach their usage limits on the original version.

The tool built for creating in-depth reports in minutes is now available on all versions of ChatGPT, albeit in a new 'lightweight' form.