---
title: Polkadot vs. Kusama
description: Compare Polkadot and Kusama, their priorities, governance, and use cases for blockchain experimentation and stability.
url: https://developer.polkadot.com/wiki/learn/learn-comparisons-kusama/
word_count: 669
token_estimate: 817
version_hash: sha256:713c32811ba52964cfc7d159aa70e77210f413c6aff380429e9f70910da08746
last_updated: 2026-10-28T08:43:55+00:00
---

Although they are like cousins and share many parts of their code, Polkadot and Kusama are
independent, standalone networks with different priorities. Kusama is wild and fast, and great for
bold experimentation and early-stage deployment. Polkadot is more conservative, prioritizing
stability and dependability. Cousins have their differences after all.

!!!info
    To get a better understanding of the key similarities and difference between Polkadot and Kusama, checkout [this article](how-to/polkadot-vs-kusama.md).

## Cost and Speed

Teams wishing to run a parachain are required to bond tokens as security. The bonding requirement on
Kusama is lower than on Polkadot, making it the more affordable development environment.

Another key technical difference between Polkadot and Kusama is that Kusama has modified governance
parameters that allow for faster upgrades. Kusama is up to four times faster than Polkadot. This
does not mean that the Kusama blockchain itself is faster, in the sense of faster block times or
transaction throughput (these are the same on both networks), but that there's a shorter amount of
time between governance events such as proposing new referenda, voting, and enacting approved
upgrades. This allows Kusama to adapt and evolve faster than Polkadot.

## Canary Network

The initial use case for Kusama was as a pre-production environment, a “canary network”.

Canary is a type of bird: back in the day, coal miners would put canaries into coal mines as a way
to measure the amount of toxic gases in the tunnels. Similarly, canary testing is a way to validate
software by releasing software to a limited number of users, or perhaps, an isolated environment -
without hurting a wide range of users.

Releases made onto Kusama can be thought of as
[Canary Releases](https://martinfowler.com/bliki/CanaryRelease.html). These releases are usually
staged. In Kusama's early days, the network won't just be used for parachain candidates to innovate
and test changes, but a proof of concept for Polkadot's sharded model.

Kusama is not simply a testnet, the blockchain is fully functional with attached economic value, and
own governance. The future of Kusama is in the hands of its participants. In a typical blockchain
development pipeline, Kusama would sit in between a "testnet" and a "mainnet":

!!!info Testnet --> Kusama --> Polkadot

As you can imagine, building on Kusama first allows teams to test things out in a live, fully
decentralized, and community-controlled network with real-world conditions and lower stakes in the
event of problems or bugs than on Polkadot.

Many projects will maintain parachains on both networks, experimenting and testing new technologies
and features on Kusama before deploying them to Polkadot. Some teams will decide just to stay on
Kusama, which is likely to be a place where we see some exciting experimentation with new
technologies going forward. Projects that require high-throughput but don’t necessarily require
bank-like security, such as some gaming, social networking, and content distribution applications,
are particularly good candidates for this use case.

Kusama may also prove to be the perfect environment for ambitious experiments with new ideas and
innovations in areas like governance, incentives, monetary policy, and DAOs (decentralized
autonomous organizations). Future upgrades to the Polkadot runtime will also likely be deployed to
Kusama before Polkadot mainnet. This way, not only will we be able to see how these new technologies
and features will perform under real-world conditions before bringing them to Polkadot, but teams
who have deployed to both networks will also get an advanced look at how their own technology will
perform under those upgrades.

## Going Forward

Ultimately, Kusama and Polkadot are independent, standalone networks with their own
communities, their own governance, and their own complementary use cases, though they will continue
to maintain a close relationship, with many teams likely deploying applications to both networks.
Web3 Foundation remains committed to both networks going forward, providing crucial support and
guidance to teams building for the ecosystem.


## How-to guides

- [Polkadot and Kusama — What's the Difference?](how-to/polkadot-vs-kusama.md)