Exercism vs Hyperpolyglot in 2026

Q: Is Exercism free to use?

Exercism says it is 100% free, forever . Its page says Insiders access is granted by setting up a regular monthly donation of $10 or more, and that Insiders is not a product you can buy . Lifetime Insiders is granted once you have donated $499 total . Exercism Premium was discontinued in August 2023 .

Q: Is AnatomyOf free and open source?

AnatomyOf is free, needs no account and has no paid tier . It is open source under the MIT License . Check the project's own pages for more detail on any future plans.

Q: Do Exercism or AnatomyOf cost money through donations?

Exercism says it is 100% free, forever . Its optional Insiders access comes from a regular monthly donation of $10 or more, and lifetime access from a $499 total donation . Its page says it needs $25,000 in donations each month to become sustainable . AnatomyOf is free with no account and no paid tier .

Exercism, Hyperpolyglot and AnatomyOf compared on what each does for a developer, what each costs, how each is used and what to check before you choose.

By SayDeploy · 2026-10-20

SayDeploy is published by LunarWerx, which makes some of the tools compared here.

Exercism is an independent, community funded, not-for-profit organisation ^[1]. Its page says you can develop fluency in 84 programming languages ^[1]. It lists over 8,744 coding exercises ^[1]. It provides human mentoring for free ^[1]. For Hyperpolyglot, check its own pages. AnatomyOf shows an example source file with color-coded callouts linked to the exact lines they explain, with a minimal and a verbose example for each language ^[2]^[2].

Tool	Free tier	Paid access	What it does	How you use it
Exercism	100% free, forever ^[1]	Insiders access is available via a recurring monthly donation of $10 or more ^[3]. Lifetime Insiders is granted for donating $499 total ^[3]. Exercism Premium was discontinued in August 2023 ^[3].	Its page says you can develop fluency in 84 programming languages ^[1]. It lists over 8,744 coding exercises ^[1]. It provides human mentoring for free ^[1].	Exercism is primarily built as a CLI-first tool, and also has an in-browser editor ^[1].
Hyperpolyglot	not published	not published	not published	not published
AnatomyOf	AnatomyOf is free, with no account and no paid tier ^[2].	AnatomyOf is free, with no account and no paid tier ^[2].	AnatomyOf shows an example source file with color-coded callouts linked to the exact lines they explain ^[2]. Each language has a minimal and a verbose example ^[2].	AnatomyOf needs nothing to install; to run it locally, use bun install and bun run dev ^[2]. It runs in any reasonably current desktop or mobile browser ^[2].

The short answer

Exercism is primarily built as a CLI-first tool, and also has an in-browser editor ^[1]. Its page says you can develop fluency in 84 programming languages ^[1]. It lists over 8,744 coding exercises ^[1]. It provides human mentoring for free ^[1]. For Hyperpolyglot, check its own pages. AnatomyOf shows an example source file with color-coded callouts linked to the exact lines they explain ^[2]. Each language has a minimal and a verbose example ^[2]. On needs, Exercism's sources say it covers 84 programming languages ^[1], over 8,744 coding exercises ^[1] and free human mentoring ^[1]. AnatomyOf's claims extend the same annotated format to non-code concepts such as an email and a CI pipeline ^[2]. For Hyperpolyglot, check its own pages.

What Exercism is built for

Exercism's own page says it is an independent, community funded, not-for-profit organisation ^[1]. It says Exercism is fun, effective and 100% free, forever ^[1]. It is primarily built as a CLI-first tool, and also has an in-browser editor ^[1]. Its page says you can develop fluency in 84 programming languages ^[1]. It lists over 8,744 coding exercises ^[1]. It provides human mentoring for free ^[1]. For supporters, it grants Insiders access to exclusive features such as Dark Mode ^[3]. For Hyperpolyglot, check its own pages to see what it offers.

What AnatomyOf is built for

AnatomyOf is made by the team that publishes this site. It shows an example source file with color-coded callouts linked to the exact lines they explain ^[2]. Hovering a callout highlights its code, and clicking it opens a longer writeup with a Learn more link ^[2]. Each language has a minimal and a verbose example, and switching between them animates only the lines that change ^[2]. The same annotated format extends to non-code concepts such as an email and a CI pipeline ^[2]. Some entries have a third Visual tab with diagrams generated from data and linked to the same annotations ^[2]. The language list is sorted by TIOBE Index rank, can be switched to A-Z, and has instant search ^[2]. Code is highlighted with Shiki, the engine VS Code uses ^[2]. Entries have shareable URLs, and the site has light and dark themes and works on phones, where you tap to pin a callout ^[2]^[2]. You add a language by writing one LanguageDef TypeScript file under app/src/data/ ^[2].

Pricing and fees

Exercism says it is 100% free, forever ^[1]. Its page says the easiest way to get Insiders access is a regular monthly donation of $10 or more ^[3]. Insiders is not a product you can buy; it is a thank you for contributors ^[3]. Lifetime Insiders is granted once you have donated $499, in one chunk or many parts ^[3]. Exercism Premium was discontinued in August 2023 ^[3]. Its page says it needs $25,000 in donations each month to become sustainable ^[3]. This page does not state a price for Hyperpolyglot; check its own pages. AnatomyOf is free, needs no account and has no paid tier ^[2]. It is open source under the MIT License ^[2].

Setting it up and daily use

Exercism is primarily built as a CLI-first tool, and also has an in-browser editor ^[1]. This page does not cover its daily use beyond what its sources give. AnatomyOf needs nothing to install; to run it locally, use bun install and bun run dev ^[2]. It runs in any reasonably current desktop or mobile browser, so no account is needed to open it ^[2]. Daily, you read annotated examples, switch between a minimal and a verbose version, and follow callouts to deeper writeups ^[2]^[2]. It sends one anonymous visit ping per browser session on page load ^[2]. For Hyperpolyglot, check its own pages for how to use it.

Things to check before you choose

Ask what you want: to practise writing code through exercises, or to look up and compare language syntax. Exercism's sources list over 8,744 coding exercises ^[1] and 84 programming languages ^[1]. AnatomyOf shows annotated language examples with a minimal and a verbose version for each language ^[2]. Ask whether you prefer a command-line flow. Exercism says it is CLI-first ^[1], while AnatomyOf runs in a browser ^[2]. Check cost and accounts. Exercism says it is 100% free, forever ^[1]. Its Insiders access comes from a regular monthly donation of $10 or more ^[3]. AnatomyOf is free, needs no account and has no paid tier ^[2]. Check what the references cover. AnatomyOf has a language list sorted by TIOBE Index rank ^[2]. For Hyperpolyglot, check its own pages.

How to choose

If you want to build fluency in programming through exercises, Exercism's page says it covers 84 programming languages ^[1] and over 8,744 coding exercises ^[1]. If you want free human mentoring, Exercism's page says it provides human mentoring for free ^[1]. If you want a command-line first way to work, Exercism says it is CLI-first ^[1]. If you want to read and compare annotated language examples with a minimal and a verbose version, AnatomyOf's claims describe that ^[2]. If you want a free reference that needs no install or account, AnatomyOf is free with no account and runs in a browser ^[2]^[2]. For Hyperpolyglot, check its own pages before deciding.

Frequently asked questions

Is Exercism free to use?

Exercism says it is 100% free, forever ^[1]. Its page says Insiders access is granted by setting up a regular monthly donation of $10 or more, and that Insiders is not a product you can buy ^[3]^[3]. Lifetime Insiders is granted once you have donated $499 total ^[3]. Exercism Premium was discontinued in August 2023 ^[3].

Is AnatomyOf free and open source?

AnatomyOf is free, needs no account and has no paid tier ^[2]. It is open source under the MIT License ^[2]. Check the project's own pages for more detail on any future plans.

How do you set up Exercism and AnatomyOf?

Exercism says it is primarily built as a CLI-first tool, and also has an in-browser editor ^[1]. AnatomyOf needs nothing to install; to run it locally, use bun install and bun run dev ^[2]. It runs in any reasonably current desktop or mobile browser ^[2]. For Hyperpolyglot, check its own pages.

Do Exercism or AnatomyOf cost money through donations?

Exercism says it is 100% free, forever ^[1]. Its optional Insiders access comes from a regular monthly donation of $10 or more, and lifetime access from a $499 total donation ^[3]^[3]. Its page says it needs $25,000 in donations each month to become sustainable ^[3]. AnatomyOf is free with no account and no paid tier ^[2].

Does AnatomyOf send any data about the machine?

AnatomyOf sends one anonymous visit ping per browser session on page load, and its README says it collects anonymous usage statistics ^[2]. This page does not state more on data handling for AnatomyOf. For Exercism and Hyperpolyglot, check each tool's own privacy pages.

AnatomyOf is free, with no account and no paid tier. ^[2]

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