Paperguide vs SciSpace

Paperguide

Unusually complete for this category: most tools do search or reference management or extraction, and Paperguide does all three plus PRISMA-grade systematic review screening. That breadth is worth the $29 if you actually run reviews. Credits meter everything, and some headline features are still labelled as coming.

Pros

• +Search across a stated 200M papers with citation-grounded answers
• +Imports existing libraries from Zotero, Mendeley or DOI
• +Data extraction into structured, cited tables rather than free text
• +Systematic review module with PRISMA reporting
• +Free tier of 1,000 credits a month to evaluate properly

Cons

• −Image and table extraction and dual-reviewer screening are still marked as coming soon
• −Everything is metered in AI credits, so heavy review work hits limits
• −Advertised low prices assume annual billing; month-to-month is roughly 70% more
• −No named legal entity — the terms only give a Georgia, US jurisdiction

SciSpace

SciSpace is the broadest of the paper-reading tools: search, explain, compare, extract, review and write all live in one account, which suits a student or early-career researcher who wants one subscription rather than four. The trade-off is depth: Elicit and Consensus are more careful about evidence quality, and the AI writer, paraphraser and humaniser push the product toward producing text rather than understanding it, which is where academic-integrity trouble starts. The free account is enough to judge the explainer; the $12 annual Premium is cheap, but credits run out quickly on heavy chat use.

Pros

• +Index of 270M+ papers with question-based search, explainers, comparison tables and data extraction in one workspace
• +Chrome extension explains PDFs wherever you read them
• +Free account to test the explainer, and Premium at $12 a month on annual billing
• +Agent templates chain search, review and extraction for recurring tasks such as grant or clinical lookups

Cons

• −Premium is credit-metered at 1,200 credits a month, and unlimited use starts at $70 a month annually
• −The AI writer, paraphraser and humaniser sit uneasily with academic-integrity policies
• −The site challenges automated readers and the terms render client-side, so the legal entity is not visible
• −Summaries can smooth over a paper's caveats; the source still has to be read for anything that matters

Is Paperguide cheaper than SciSpace?

On published entry prices, SciSpace starts lower — $12/mo against $29/mo for Paperguide. Entry price is the lowest paid plan as we last verified it; what each plan includes differs.

Does Paperguide or SciSpace have a free tier?

Both: Paperguide has a free tier, and SciSpace has a free tier.