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Updated 4 September 2026 · Independent comparison

OpenEvidence vs Perplexity:
which should you use?

OpenEvidence and Perplexity, side by side. Find the one that fits what you need to do.

Find your best fit

The 30-second answer

OpenEvidence is built for search, research & academics. Perplexity is built for search, research & academics.

Pricing, simplified

Start free. Upgrade when you need more.

2 of 2 have a free plan 0 of 2 prices re-read automatically · how we know No paid placement

The 30-second comparison

If you only read one section, make it this one. Rows where both sides say the same thing are left out — the point is where they differ. Where each row came from is listed underneath.

OpenEvidence and Perplexity side by side, with the better fit for each row.
CategoryOpenEvidencePerplexityBetter fit
What it's built forBuilt for clinical literature. Answers cite primary medical research, and it is free for verified clinicians.Purpose-built for cited web answers. Every claim carries a numbered link, and Comet extends it across normal browsing.Tie
Free planYes. Free for verified clinicians, ad-supportedYes. Free tier with citations in every answer, basic AI models and limited daily useTie
Cheapest way to payNo paid tier — it is free.$20 a month.OpenEvidence
What the paid tiers costNo paid tier — it is free.
  • One person, from $20/month
  • Enterprise, from $34/month billed yearly
Tie
What to watch out forMedicine only, and access is gated behind clinician verification. No use for a history or engineering student.A citation proves a source was consulted, not that it supports the sentence attached to it. Click through on anything that matters.Tie
Who it is usually forresearchers, working professionalsstudents, working professionals, researchers, people exploringTie
What it asks of youExpects some technical comfort to get going.No setup — it works in a browser.Tie
Made byOpenEvidence — Cambridge, US.Perplexity — San Francisco, US.Tie

OpenEvidence is ahead on 1 of the 8 rows compared — cheapest way to pay — and it is not about how well it does the job. On fitness for the work, it and Perplexity are level. Treat this as a tiebreaker, not a recommendation.

Ahead on the small print

OpenEvidence

Built for clinical literature.

✓ Built for clinical literature. ✓ You would rather not take on a subscription at all ✓ It is built for search, research & academics ✓ Answers cite primary medical research, and it is free for verified clinicians.
Choose Perplexity instead if…

Purpose-built for cited web answers.

Perplexity is the better answer when the job is what it was built for rather than what the pick above does broadly.

✓ Purpose-built for cited web answers. ✓ You would rather not configure anything first ✓ You are among students or people exploring ✓ It is built for search, research & academics

How we know

Every row that separated these two, and where it came from. Nothing here is a hands-on test — if a line rests on a vendor’s own pricing page, it says so and links it.

The 1 row that decided this page, with the source for each.
RowFavoursWeightWhere it came from
Cheapest way to payOpenEvidenceEverything elseFrom each vendor’s own pricing page. Dates and pages are listed below.

The prices

OpenEvidence. Read by hand on 4 September 2026, because OpenEvidence cannot be read automatically: Free for verified clinicians, no paid tier — nothing priced to watch openevidence.com/pricing

Perplexity. Read by hand on 4 September 2026, because Perplexity cannot be read automatically: perplexity.ai refuses automation (403) on /pricing and /hub/pricing alike — the domain, not the path. Verify by hand. perplexity.ai/hub/pricing

The ratings

The category these two share. Search, Research & Academics — both are listed there in the catalogue, and the fit recorded against each listing is a judgement made here, by hand.

The nine-category grid below. Derived from what each product is listed for, by one script, once per build — so the same pair always reads the same. It is a derivation, not a review.

What this is not

Neither product was run side by side to produce this page. Nobody was paid to appear on it and nothing here is ranked by commission.

To put the same question to both and read the answers yourself, run them side by side — that is a live test, and this is not.

Choose based on what you’re doing

All ten categories, including the ones where neither of these is the answer. These ratings are derived from what each product is listed for, not from running it — a rating here is a reading of the record, and the record is linked.

01

General-Purpose AI Assistants

Questions, brainstorming, explanations, everyday tasks, decision-making, general advice.

OpenEvidence
Not a good fit
Perplexity
Not a good fit
Best choice: Neither
02

Search, Research & Academics

Web research, deep research, books, academic papers, citations, news, fact-checking.

OpenEvidence
Built for this
Perplexity
Built for this
Best choice: Tie
03

Writing, Communication & Language

Emails, reports, essays, editing, summarizing, translation, presentations.

OpenEvidence
Not a good fit
Perplexity
Not a good fit
Best choice: Neither
04

Coding, Data & Technical Work

Programming, debugging, data analysis, spreadsheets, math, engineering, technical research.

OpenEvidence
Bad fit
Perplexity
Not a good fit
Best choice: Neither
05

Business, Finance & Professional Work

Business strategy, investing, market research, legal, sales, HR, accounting, consulting.

OpenEvidence
Not a good fit
Perplexity
Not a good fit
Best choice: Neither
06

Image & Design

Image generation, photo editing, logos, graphics, product design, advertising creatives.

OpenEvidence
Bad fit
Perplexity
Not a good fit
Best choice: Neither
07

Video

Video generation and editing, clipping, subtitles, avatars, animation and motion capture.

OpenEvidence
Bad fit
Perplexity
Not a good fit
Best choice: Neither
08

Audio, Voice & Music

Voice generation, transcription, music, dubbing, sound cleanup and podcast production.

OpenEvidence
Bad fit
Perplexity
Bad fit
Best choice: Neither
09

Marketing & Content Creation

Social media, SEO, advertising, copywriting, content ideas, scripts, brand development.

OpenEvidence
Bad fit
Perplexity
Good fit
Best choice: Perplexity
10

Productivity, Automation & Personal Life

AI agents, workflows, scheduling, meetings, organization, shopping, travel, personal finance.

OpenEvidence
Not a good fit
Perplexity
Good fit
Best choice: Perplexity
Pick OpenEvidence if

Built for clinical literature.

Cambridge, US
Built for clinical literature.
You would rather not take on a subscription at all
It is built for search, research & academics
Answers cite primary medical research, and it is free for verified clinicians.
Pick Perplexity if

Purpose-built for cited web answers.

San Francisco, US
Purpose-built for cited web answers.
You would rather not configure anything first
You are among students or people exploring
It is built for search, research & academics

Pricing, simplified

The plans people actually compare, read from each vendor’s own page.

PricingSimple, up-to-date plan overview.
OpenEvidenceby OpenEvidence
Perplexityby Perplexity
Free version
OpenEvidence
Yes — Free plan availableFree for verified clinicians, ad-supported
Perplexity
Yes — Free plan availableFree tier with citations in every answer, basic AI models and limited daily use
Individual plans
OpenEvidenceFree plan only
Perplexity
Pro $20 / month
Max $200 / month
Additional security and governance Custom pricing
Business plans
OpenEvidenceNot sold to teams
PerplexityNot sold to teams
Enterprise
OpenEvidenceNot published
Perplexity
From $34 / user / month (annual)Enterprise Pro, Enterprise Max
View full details
OpenEvidenceView OpenEvidence pricing
PerplexityView Perplexity pricing
Interactive

Tell us what you use AI for

Pick your main job and the verdict below changes to match. Every answer is on the page already, so this works as a reader, not a lookup.

The verdict for that job
Evenly matched
Close call. Both cover search, research & academics at the same level; both have a free plan you can start on.
8 rows compared

Frequently asked questions

Is OpenEvidence or Perplexity better?

OpenEvidence is ahead on 1 of the 8 rows compared — cheapest way to pay — and it is not about how well it does the job. On fitness for the work, it and Perplexity are level. Treat this as a tiebreaker, not a recommendation. both have a free plan you can start on. OpenEvidence: Built for clinical literature. Answers cite primary medical research, and it is free for verified clinicians. Perplexity: Purpose-built for cited web answers. Every claim carries a numbered link, and Comet extends it across normal browsing.

Is OpenEvidence or Perplexity cheaper?

Only one of the two publishes a ladder we have verified, so a like-for-like comparison is not possible yet.

Do OpenEvidence and Perplexity both have free plans?

Yes. OpenEvidence: Free for verified clinicians, ad-supported. Perplexity: Free tier with citations in every answer, basic AI models and limited daily use.

What should I watch out for?

OpenEvidence: Medicine only, and access is gated behind clinician verification. No use for a history or engineering student. Perplexity: A citation proves a source was consulted, not that it supports the sentence attached to it. Click through on anything that matters.

Read more

OpenEvidence

What it is for, who makes it, what it costs and what to use instead.

Perplexity

What it is for, who makes it, what it costs and what to use instead.

Best AI for Research

Web research, deep research, books, academic papers, citations, news, fact-checking.

How we compare AI tools
Every row is generated from the same record the rest of the site is built on, so this page cannot drift from what we say elsewhere. We separate winner, tie and depends rather than forcing each category into a ranking, and we drop rows where both sides say the same thing. A pick is only called an overall pick when it leads on rows about how well the tool does the job; a lead that rests on price or audience alone is labelled as one. Nothing here is a hands-on test — how we know lists the source and date behind every deciding row.