VOL. XCIV, NO. 247
BEST INVESTING TOOLS COMPARISON
Tool details checked August 23, 2026
Tool Comparison
GuruFocus vs Prospero.ai
Start here
GuruFocus
Free • From $549/yr · Web · Mobile · API
- You want an API so you can script or automate things
- You want top analysts, stock comparison, and ETF comparison.
- You've outgrown the basics and want pro-level depth
Pick Prospero.ai instead if
Prospero.ai
Free • Paid plans available · Mobile
- Delayed quotes won't cut it; you need real-time data
- You want market sentiment and dark pool & off-exchange.
Skip both if: Neither one clicks with how you research; there are strong third options.
See alternativesOutbound links may include affiliate or sponsor codes.
Our take
The bottom line
GuruFocus and Prospero.ai cover a lot of the same ground (11 shared categories, including stock ideas, screeners, and ETF screeners), so for the basics you won't go far wrong with either. GuruFocus simply does more: 49 categories to Prospero.ai's 13, including top analysts, stock comparison, and ETF comparison. Prospero.ai counters by being completely free.
What readers say
GuruFocus
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Prospero.ai
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Key differences at a glance
- Real-time data
- Prospero.ai
- Free trial
- GuruFocus7 days
- Broader coverage
- GuruFocus49 vs 13 categories
- API access
- GuruFocus
- Broker sync
- GuruFocus
- Global coverage
- GuruFocus
See for yourself
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.ShowHide
How they stack up
The side-by-side table: pricing, platforms, data, and coverage at a glance.| Attribute | ||
|---|---|---|
| Pricing & plans | ||
Starting price | Free • From $549/yr | Free • Paid plans available |
Free tier | Yes | Yes |
Free trial | 7 days | — |
Plan limits | 49 limits: Free: portfolio limit: Up to 3 portfolios with 25 stocks each for free members, Free: data api requests: 100/month included in the Free API package +47 more | — |
| Platforms & access | ||
Web app | Yes | No |
Mobile app | Yes | Yes |
API access | Yes | No |
Broker sync | Yes | No |
Integrations | GuruFocus Data API, GuruFocus MCP Server +3 more | — |
| Audience & fit | ||
Experience level | Beginner, Intermediate, Advanced | Beginner, Intermediate |
Best for | Retail Traders, Pro Retail +9 more | — |
Categories covered | 49 | 13 |
Regions | North America, Europe, APAC, LatAm, Middle East, Africa | North America |
| Data & capabilities | ||
Data quality | 5 signals: Latency: End of Day, Granularity: EOD +3 more | Latency: Real-time and End of Day and Granularity: Minute and EOD |
Data partners | 5 partners: QuoteMedia, Morningstar +3 more | — |
Capabilities | 9 signals: Custom formulas, Ranking backtests +7 more | — |
Security | Status page and Encryption in transit | — |
| Try it | Visit GuruFocus | Visit Prospero.ai |
Where each one shines
What GuruFocus and Prospero.ai each do best.ShowHide
Where each one shines
What GuruFocus and Prospero.ai each do best.What GuruFocus does best
- Research coverage for global stocks with long historical financials, valuation data, charts, comparisons, market valuation indicators, economic indicators, industry data, and company-level fundamentals.
- The All-in-One Screener with hundreds of filters across fundamentals, valuation, profitability, growth, dividends, guru holdings, insider trades, predefined value screens, custom filters, saved screens, and downloads.
- ETF Screener and ETF GF Scores for filtering and comparing more than 5,000 U.S.
- Corporate and government bond screening by yield, maturity, ratings, coupon structure, outstanding amount, issuer, and industry, plus company-level bond tabs.
- Backtest screener strategies across many countries with configurable stock count, ranking metric, sort order, date range, and rebalance frequency; current membership terms give Premium the latest five years and Premium Plus/Professional history back to 2006.
What Prospero.ai does best
- Five short-term scores cover options, social sentiment, dark pools, short pressure, and institutional flow.
- Five longer-horizon scores cover profitability, growth, upside breakout, downside breakout, and similarity to the S&P 500.
- Daily Screener and Our Picks pages identify candidates across short and long horizons.
- Watchlists and in-app notifications are available in the iOS and Android apps.
- Signal guides explain the input, score range, update interval, and stated limitations for each metric.
Every detail we compared
Every tracked attribute for GuruFocus and Prospero.ai, side by side.ShowHide
Every detail we compared
Every tracked attribute for GuruFocus and Prospero.ai, side by side.| Attribute | ||
|---|---|---|
| Coverage & fit | ||
Asset types | StocksETFsBondsMutual FundsOptionsFundsOther | StocksETFs |
Experience | BeginnerIntermediateAdvanced | BeginnerIntermediate |
Target audience | Retail TradersPro RetailLong-term InvestorsValue InvestorsQuality InvestorsDividend InvestorsAnalystsQuants/Developers+3 more | Not specified |
Regions | North AmericaEuropeAPACLatAmMiddle EastAfrica | North America |
Coverage details | Identifiers: Ticker and CIK | Countries: USExchanges: XNYS and XNASIdentifiers: Ticker |
| Data | ||
Data freshness | End of Day | Real-timeEnd of Day |
Data granularity | EOD | MinuteEOD |
Pricing sources | ExchangeVendorModel | Not specified |
Data partners | QuoteMediaMorningstarRefinitivFREDSEC / local regulators | Not specified |
| Access & integrations | ||
API protocols | REST | Not specified |
API auth & delivery | Auth: APIKeySDKs: Python and GoDocs | Not specified |
Import methods | CSVBrokerOAuthManual | Manual |
Integrations | GuruFocus Data APIGuruFocus MCP ServerGuruFocus Excel Add-inGuruFocus Google Sheets Add-onSnapTrade | Not specified |
Export formats | CSVExcelJSON | Not specified |
| Plans & trust | ||
Security & compliance | Status pageEncryption in transit | Not specified |
Capability signals | Custom formulasRanking backtestsUniverse builderFactors: Value, Quality, Momentum, and GrowthBroker syncMulti-currencyYield curvesCredit ratings+1 more | Not specified |
Vendor & support | GuruFocus.com, LLCCountry: United StatesFounded 2004Support: Email, Chat, Phone, and Forum | Prospero.ai LLCCountry: USSupport: Email |
Curation ratings | Not specified | Methodology 3/5Reliability 3/5UX 4/5 |
Green tags are exclusive to that tool in this comparison.
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.ShowHide
What you'll actually pay
Plans, billing, trials, and per-month pricing for both tools.| Tier | ||
|---|---|---|
| Free plan | Freeportfolio limit: Up to 3 portfolios with 25 stocks each for free members · data api requests: 100/month included in the Free API package · +1 more | Free |
| Entry paid plan | $549/yr≈ $45.75/mo“Premium”billing: Annual only · data api requests: 200/month included with Premium membership · +2 more | Subscription“Paid tiers” |
| Tier 2 | $1398/yr≈ $116.50/mo“Premium Plus”billing: Annual only · data api requests: 500/month included with Premium Plus membership · +2 more | — |
| Tier 3 | $200/mo“Data API Builder”billing: Billed annually · monthly request limit: No limit · +12 more | — |
| Tier 4 | $2448/yr≈ $204/mo“Professional”billing: Annual only · data api requests: 2,000/month included with Professional membership | — |
| Tier 5 | $2000/mo“Data API Commercial”billing: Billed annually · monthly request limit: No limit · +1 more | — |
| Top plan | $100 per unit“Data API Pay As You Go”initial top up: $100 credit · stock daily prices: $0.05/request · +16 more | — |
| Custom / enterprise | Contact sales“Custom API / Enterprise Package” | — |
| Free trial | 7 days | — |
Questions we keep getting
What's the difference between GuruFocus and Prospero.ai?
GuruFocus leans toward stock ideas, screeners, and ETF screeners, while Prospero.ai puts more weight on stock ideas, screeners, and ETF screeners. They overlap in 11 categories, so for most people it comes down to workflow preference and price.
How much do GuruFocus and Prospero.ai cost?
Good news: both GuruFocus and Prospero.ai have free plans, so you can run them side by side and only pay if you hit a wall.
Which is better for beginners: GuruFocus or Prospero.ai?
Honestly, neither is aimed at beginners. Expect a learning curve either way; that's the trade-off for the depth they offer.
Does GuruFocus or Prospero.ai have an API?
GuruFocus has an API for programmatic access and custom integrations. Prospero.ai doesn't, so you're working through its interface.
Should I choose GuruFocus or Prospero.ai?
It depends on what you're after. Pick GuruFocus if top analysts and stock comparison matter to you; go with Prospero.ai if you'd rather have market sentiment and dark pool & off-exchange. And if you only need the basics both share, let price decide.
What asset classes do GuruFocus and Prospero.ai cover?
Both cover stocks and ETFs. GuruFocus also handles bonds, mutual funds, and options.
Does GuruFocus or Prospero.ai have real-time data?
Prospero.ai offers real-time data, which matters if you trade actively. GuruFocus runs on delayed or end-of-day data, which is perfectly fine for longer-term investors who don't live and die by the tick.
Which covers international markets: GuruFocus or Prospero.ai?
GuruFocus has documented international coverage (North America, Europe, APAC, LatAm, and more), so it's the safer bet if you hold non-US stocks. Prospero.ai is more region-specific, mainly North America.
Can I export data from GuruFocus and Prospero.ai?
GuruFocus exports to CSV and Excel. Prospero.ai is stingier about getting data out.
Can GuruFocus or Prospero.ai connect to my broker?
GuruFocus syncs with brokers automatically. With Prospero.ai, you're entering holdings by hand or importing files.
Which has a better stock screener: GuruFocus or Prospero.ai?
Both GuruFocus and Prospero.ai include stock screeners, and they differ more in interface than raw power; try both and see which one clicks for you.
Can I track my portfolio with GuruFocus or Prospero.ai?
GuruFocus handles portfolio tracking. Prospero.ai is really a research tool; you'd track your portfolio elsewhere.
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Curation & Accuracy
This directory blends AI‑assisted discovery with human curation. Entries are reviewed, edited, and organized with the goal of expanding coverage and sharpening quality over time. Your feedback helps steer improvements (because no single human can capture everything all at once).
Details change. Pricing, features, and availability may be incomplete or out of date. Treat listings as a starting point and verify on the provider’s site before making decisions. If you spot an error or a gap, send a quick note and I’ll adjust.