OpenAI defines Deep research as follows:
Deep research is able to search creatively and persistently until it finds an answer that exactly matches the criteria.
But other platforms offer similar features of searching by steps. This would be a list of these tools:
Some references:
- Comparing Leading AI Deep Research Tools: ChatGPT, Google, Perplexity, Kompas AI, and Elicit | by ByteBridge | Feb, 2025 | Medium
- Deep Research Tools: A Comprehensive Guide and Comparison | by ByteBridge | Mar, 2025 | Medium
- Conversation Modes: Quick, Think Deeper, Deep Research [with Copilot]- Microsoft Support