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KeepFlash ×

Perplexity ×

KeepFlash ×
Perplexity ×

Comparator · Research & search

KeepFlash$7.99/mo (Plus)vs

Perplexity$10/mo (Education Pro (consumer, verified students/faculty))

Starting price$7.99/mo · $10/mo

Free tieryes · yes

Plans documented3 · 7

Platforms1 · 2

Comparison of KeepFlash, Perplexity
	KeepFlash Visit website for KeepFlash (opens in a new tab)	Perplexity Visit website for Perplexity (opens in a new tab)
Category	Research & search	Research & search
Main use cases	Saving and searching articles, PDFs and videos for research projects Building topic overviews from scattered notes with cited sources Annotating and asking questions about PDFs Keeping study notes linked with backlinks Letting a coding agent read your saved research via MCP	Researching questions with cited sources Tracking current events Comparing products or options Building search-grounded apps via API
Best for	Researchers and students organizing reading, Writers collecting sources, Users who want a searchable personal knowledge base	Researchers, Students, Journalists, Developers building search features
Platforms	Web	Web, API
Pricing model	Freemium	Freemium
Pricing	Free $0; Plus $7.99/month billed monthly or $6.58/month billed yearly; Pro $14.99/month billed monthly or $12.42/month billed yearly. Checked Sep 29, 2026. Official pricing ↗	Free plan; Pro and Max paid plans; Enterprise for organizations. Viewed from outside the US, the pricing page showed Pro at $17/month and Max at $167/month (annual-billing equivalents). US monthly prices not confirmed — see official pricing. Checked Sep 30, 2026. Official pricing ↗
Key features	Chrome web clipper extension PDF annotation and YouTube transcript capture Keyword search (free) and semantic search (paid) AI auto tagging and Auto Wiki Topic Pages AI answers with citations to saved sources Read-only MCP agent access on every plan	Answers with inline source citations Real-time web search Deep research reports Choice of AI models from several labs on paid plans Perplexity Computer for building documents and apps Search, Agent and Embeddings APIs
Pros	Free plan with no card required MCP agent access included on all plans Paid plans list clear storage and credit limits Public changelog with dated updates	Every answer links to its sources so claims can be checked Free plan available to start Paid plans offer models from multiple AI labs in one place Developer APIs with published usage-based pricing
Limitations	Free plan capped at 150 notes, 2 spaces and 500 MB storage AI usage consumes monthly KeepFlash credits (200 on Free) Semantic search and PDF export require Plus or Pro Capture extension confirmed only for Chrome	Answers can still misread or misattribute sources Deep research and model choice need a paid plan API is billed separately by tokens and requests Promotional credit offers change often, so check current terms
Ratings	Editorial Not yet reviewed Users No user reviews yet	Editorial Not yet reviewed Users No user reviews yet
Review status	Listed Verified Oct 1, 2026	Listed Verified Sep 30, 2026