The lightweight version of Deep Research will be as in-depth as the standard version, but produce shorter answers.

ChatGPT is joining the likes of Gemini and Perplexity to launch its own free Deep Research tool. You can now use ChatGPT to generate in-depth reports on any topic you like. However, there are usage limits and feature limitations to be careful about,

One of the best ChatGPT tools is Deep Research, but so far, it has required a subscription. OpenAI now offers a lighter version and expanded it to free users.