The short version: pick the one in the language you are more fluent in. Both libraries are actively maintained, both cover the whole API surface, and neither will be the reason your app succeeds or fails.
That said, they are not identical, and a few differences matter enough to be worth knowing before you commit a few thousand lines.
Where they are the same
Slash commands, buttons, modals, select menus, context menus, threads, voice, sharding, permissions. Both have all of it. Both have good documentation and large communities, so almost any question you have has been answered somewhere. Neither is meaningfully behind on new Discord features.
Where they differ
| DISCORD.JS | DISCORD.PY | |
|---|---|---|
| Language | JavaScript or TypeScript | Python |
| Types | Excellent, first-class TypeScript | Type hints, weaker inference |
| Command style | Explicit builders | Decorators, less boilerplate |
| Memory | Somewhat higher at rest | Somewhat lower at rest |
| Ecosystem strength | Web APIs, anything npm | Data, ML, scraping |
The typing difference is the one that compounds. If you write TypeScript, discord.js gives you autocomplete over the entire API and catches a whole class of mistake before you run anything. Python type hints help, but they will not catch a misspelled property on an interaction object.
The decorator difference cuts the other way. Registering a command in discord.py is a decorator over a function; in discord.js it is a builder plus a handler plus a registration step. Neither is wrong, but the Python version is less code to look at.
What should actually decide it
- 01What you already writeFluency beats library ergonomics every time. An app in the language you know is finished; an app in the language you are learning is a project.
- 02What the app has to doCalling ML models or doing data work? Python. Sharing code with a web app or an existing Node service? JavaScript.
- 03What your AI assistant writes wellBoth, honestly. But whichever you already have in the repo, it will stay consistent with.
Hosting differences
Very few. Both are long-running processes that hold a gateway connection, both need the same things from a host, meaning no sleeping, automatic restarts and environment variables for the token, and both run comfortably in a few hundred megabytes.
Spocket runs Node 22 and Python 3.11 in the same container shape at the same price, so this is not a decision you need to make for billing reasons.
The other libraries
JDA for Java, serenity for Rust, DSharpPlus for C#, Discord4J for the JVM. All real, all fine. If you are already in one of those ecosystems, use the native library rather than switching languages to follow a tutorial.