But while you currently need a $200-per-month Pro subscription to use OpenAI’s Deep Research (the company plans to expand to other subscription tiers), Perplexity’s Deep Research is available for free — non-subscribers get an unspecified-but-limited number of queries per day, while paying subscribers get unlimited queries.
Perplexity’s Deep Research also seems to perform more quickly, completing most tasks in under three minutes compared to 5 to 30 minutes for OpenAI Deep Research.