Best AI research tools for executive assistants
EAs research people the principal is about to meet, companies the principal is about to negotiate with, and topics the principal needs a one-paragraph brief on by 9am. The four below cover that work, with Perplexity doing most of the heavy lifting for sourced answers.
Perplexity
★ Editor's pickFree tierAI search engine that cites sources. The fastest way to research a topic from scratch in 2026.
Free plan. Pro at $17/month billed yearly, with a higher tier for unlimited usage.
Your exec needs a one-paragraph brief on a board member's company by 9am. Perplexity returns the brief plus the underlying sources for them to skim if they want to dig deeper. $17/month.
Pros- Citations on every answer, with links to the actual sources
- Spaces feature groups research threads with shared context
- Mobile app is genuinely the best AI app for on-the-go research
Cons- Source quality is mixed: sometimes excellent, sometimes blog spam
- Free tier is enough to evaluate but not to use seriously
- Compresses sources, so always verify nuance against the originals
ChatGPT
Free tierOpenAI's flagship. The chatbot most people already pay for, with the deepest ecosystem.
Free plan. Go at $8/month, Plus at $20/month, Pro from $100/month with $200 and $500 tiers. Business at $25/user/month billed yearly.
Use it for the ten-minute prep before your executive walks into a meeting. It browses the web, which covers quick background on attendees and their companies.
Pros- Custom GPTs lock a style guide so a team doesn't re-paste it every time
- Memory carries context across sessions without a workflow
- Image generation, voice, and web browsing are bundled in
Cons- Long outputs drift off-voice unless you keep correcting
- Memory occasionally pulls in irrelevant past chats
- Pro tier is overkill for most marketing writing
Claude
Free tierAnthropic's chatbot. The 2026 pick for long-form work that has to hold voice.
Free plan. Pro at $17/month billed yearly ($20 monthly), Max at $100/month, Ultra at $200/month.
Long-context synthesis when research has to roll up into a one-page briefing.
Pros- Longest, most on-voice drafts of any general-purpose chatbot
- Projects feature loads a full brand bible once and pulls from it across every chat that month
- Reads PDFs, decks, and CSVs without setup
Cons- No native image generation
- Smaller third-party ecosystem than ChatGPT
- Free-tier limits kick in fast on long sessions
NotebookLM (now Gemini Notebook)
Free tierGoogle's free AI notebook that grounds answers only in sources you upload.
Now called Gemini Notebook. Free with a Google account. Google AI Pro at $19.99/month raises the limits.
Free, and answers come only from the documents you upload. Add outside sources as files too and it can work across both.
Pros- Grounded entirely in sources you provide, no internet hallucinations
- Audio Overview feature generates surprisingly listenable podcast versions of your sources
- Free tier handles up to 50 sources per notebook and 50 notebooks
Cons- Sources must be uploaded; doesn't search the web for you
- Limited to documents, slides, web pages, and YouTube (no images yet)
- Pro features locked behind Google AI Premium bundle, not standalone
Frequently asked questions
Best AI for prepping executive meetings?
Perplexity for the research, Claude for the briefing synthesis. 15 minutes replaces an hour of Googling.
Can AI research replace LinkedIn research on contacts?
Not entirely. LinkedIn has structured data AI tools can't replicate. Use AI for the qualitative context, LinkedIn for the structured facts.
How do I verify AI research is accurate?
Verify the top three claims against original sources. The cost of an inaccurate briefing to an executive is high; the verification step is mandatory.
Free option that works?
Perplexity free tier plus ChatGPT Free covers most occasional research at $0/month.
