Consensus
Research agents
Search engine for peer-reviewed research
Elicit
Research agents
Research assistant for scientific papers
Gemini Deep Research
Research agents
Gemini mode that researches a topic and writes a report
GPT Researcher
Research agents
Open source agent that writes cited research reports
Open Deep Research
Research agents
LangChain's open source deep research agent
OpenAI Deep Research
Research agents
ChatGPT agent that writes multi-page research reports
Perplexity
Research agents
Answer engine with a multi-step research mode