GreekSoup vs Koyfin vs Fiscal.ai: prices, features and which to pick

GreekSoupUpdated 9 November 20268 min read

Koyfin, Fiscal.ai or GreekSoup: which should you pick?

All three help you research public companies, and each is built for a different reader. Koyfin suits an investor who lives in charts and dashboards, follows markets outside the US and wants a phone app. Fiscal.ai suits someone who models companies on their segments and KPIs and wants the figures minutes after a release. GreekSoup suits an investor in US stocks who wants the filings, the insiders and the funds on one free page, with valuation tools and an AI analyst to ask about them.

Where is ahead

• Free to read with no card, and up to 20 years and 20 quarters on every company. Koyfin's free plan shows 2 years; Fiscal.ai has no free plan.
• A Forecaster and a DCF on every company, which Koyfin does not offer.
• The whole ownership record on each company: Form 4 trades with trading-plan flags, Form 144 notices, 13D and 13G, House members' trades, options and fails-to-deliver.
• Premium at $9 a month or $79 a year, against $39 a month billed yearly for the first paid plan on Koyfin and on Fiscal.ai.

How much do Koyfin and Fiscal.ai cost?

Koyfin has a free plan, and its first paid plan starts at $39 a month billed yearly. Fiscal.ai has no free plan; its first paid plan starts at $39 a month billed yearly, after a 7-day trial that needs a card. GreekSoup is free to read, and Premium is $9 a month or $79 a year. The table below has every plan.

GreekSoup vs Koyfin vs Fiscal.ai, side by side

Feature
Free plan	Yes: every company page, deep dives into 20 companies and 10 AI questions a month	Yes: 2 years and 12 quarters of financials, 1 year of estimates, 2 watchlists, 2 screens, 5 alerts and 45 days of transcripts. New sign-ups get 7 days of every feature first	None. A 7-day trial after adding a card, which becomes a paid plan unless cancelled
Paid plans	Premium: $9 a month or $79 a year	Billed yearly: Plus $39, Premium $79, Advisor Core $209, Advisor Pro $299 a month. Billed monthly: $49, $110, $239, $349	Pro: $49 a month, or $39 billed yearly. Max: $99 a month, or $79 billed yearly. API and MCP access sold separately
Market focus	US-listed companies, each read in depth from its own SEC filings: every figure links to the 10-K or 10-Q, every Form 4 trade, every manager that files a 13F	Global markets: stocks, ETFs, funds, macro	Global public companies, ETFs and funds
Financial history	Up to 20 years and 20 quarters, free	2 years and 12 quarters free; 10 years and 40 quarters on paid plans	20 years and 40 quarters
Segments and KPIs	Segments and regions wherever the 10-K reports them: 20 companies a month free, every company on Premium	Not listed on its plans	Company-specific segments and KPIs: 10 years or 15 quarters on Pro, the full history on Max
Valuation tools	A Forecaster with low, middle and high cases, and a DCF on every company: 10 a month free, every company on Premium	Not listed on its plans	DCF, IRR, reverse DCF and comparables templates on its company pages
Analyst estimates	None; the Forecaster builds your own cases	1 year free, with consensus for the S&P 500 only; 10 years, worldwide, on paid plans	On its company pages
Earnings calls	Takeaways from the last 5 calls, and full call reads	Transcripts: 45 days free, the full history on paid plans, with transcript summaries on paid plans	Transcripts and AI summaries
Insiders and owners	Every Form 4 trade with trading-plan flags, Form 144 notices, every manager that files a 13F, 13D and 13G, short interest, fails-to-deliver	Insider transactions (Form 144 notices left out) and short interest	Insider trades and 13F holders on its company pages
Congress trades	House members' trades on every company page	Not listed on its plans	Politician trades, added in November 2026
Options	Open interest and put/call on every company page	Not listed on its plans	No options tab on its company pages
Screener	A stock screener with tests in plain words, and ready-made lists	Stocks on Free; stocks and ETFs on Plus and Premium	A screener across its own metrics
Alerts	A morning email when a company you follow files something that matters; insider buying alerts on Premium	Price, news and filing alerts: 5 free, 50 on Plus, 500 on Premium and above	Notifications for news, press releases and SEC filings on your dashboard
AI	SuperAnalyst answers questions on any US company from its filings	Compare Matrix, a beta that answers plain-English questions as a table, with monthly limits; transcript summaries on paid plans	AI summaries of documents; MCP connectors for Claude, ChatGPT and Copilot, sold separately
Exports	CSV downloads on Premium	Prices, performance and fund data from tables; financials, estimates and valuation data are held back from download by its data vendor	Financial data exports on Max for the US, Canada, ADRs, the UK and the EU; no Excel add-in
Your portfolio	Connect Robinhood, Interactive Brokers or Questrade read-only, or upload a file	1 portfolio free, unlimited on paid plans; broker and custodian connections only on the Advisor plans	Brokerage connections, including Robinhood, Interactive Brokers and Questrade
How fast it updates	Results the evening they are released; prices after each US close	US prices a mix of live and 15-minute delayed; Canada 15 minutes; other countries end of day	Figures 3 to 7 minutes after results for the US, Canada, the EU, the UK and ADRs; prices 15 minutes delayed
On a phone	Any phone browser; no separate app	An iOS and Android app on every plan	No app in Apple's App Store; it runs in a browser

Looking for a Koyfin alternative?

Koyfin is strong on charts, dashboards and global markets. For US stocks researched from their filings, these are the places where GreekSoup gives more:

is ahead of

• Up to 20 years and 20 quarters of financials free, against 2 years on Koyfin's free plan.
• A Forecaster with low, middle and high cases, and a DCF on every company.
• Form 144 planned-sale notices and trading-plan flags on every insider trade.
• House members' trades, options open interest, 13D and 13G holders and fails-to-deliver on each company.
• A read-only connection to Robinhood, Interactive Brokers or Questrade on any plan; Koyfin keeps broker connections to its adviser plans.

Looking for a Fiscal.ai alternative?

Fiscal.ai goes deep on segment and KPI data and updates within minutes of a release. GreekSoup is ahead on access and price:

is ahead of

• Free to read with no card and no trial clock; Fiscal.ai starts with a 7-day trial that needs a card.
• Up to 20 years and 20 quarters on every US company without paying.
• Premium at $9 a month or $79 a year, against $49 a month or $39 billed yearly for Fiscal.ai Pro.

Where each one is stronger

• Free to read, up to 20 years and 20 quarters, no sign-in
• Forecaster and DCF on every company
• The whole ownership record, from Form 4 and Form 144 to 13D, 13G and House trades
• An AI analyst that answers from the filings

• Global markets, stocks, ETFs, funds and macro
• Charting and market and macro dashboards, free too
• Analyst estimates, 10 years worldwide on paid plans
• A phone app on every plan
• Adviser plans with client reports

• Company-specific segment and KPI data
• Figures 3 to 7 minutes after results
• DCF, IRR and comparables templates
• An API and MCP connector for your own AI tools

What the record looks like on GreekSoup

Every company page starts from the company's own filings. Here is Apple, as anyone sees it without signing in.

On a phone

GreekSoup has no app of its own, and it does not need one. The pages are laid out for a phone, so a company page opens in any phone browser with the latest quarter beside the same quarter a year earlier, the last full year, and a link to the filing behind each one.

Nothing sits behind a sign-in to read it: no account, no subscription and nothing to install. A free account adds deep dives into 20 companies and 10 questions to SuperAnalyst each month.

Reading about a stock somewhere else? Our free Chrome extension, GreekSoup Stock Ticker Lookup: Earnings, Insider Trades, 13F Holders, shows the latest quarter against a year ago, insider trades and 13F holders when you hover a $ticker such as $AAPL.

Questions