What Are Bittensor Subnets?

Subnets explained

A Bittensor subnet organizes a specific AI task with its own miners, validators, and scoring rules. The subnet directory brings together alpha prices, emission share, and participant counts so you can compare how those networks operate.

How subnets compete

No subnet receives a fixed TAO allocation. Each one earns a share of every block’s emission in proportion to the TAO staked into its alpha pool, and pays that share out to its own miners and validators. Attracting stake is therefore the whole game: more stake means more emission, which means miner slots are worth more, which attracts better miners, which is what justifies the stake. Run in reverse, it is equally fast — a subnet that stops delivering loses share to one that does.

How this works on-chain: the subnet modelRegistration, netuids, hyperparameters, the owner cut, deregistration and the full lifecycle — specified against the current runtime.subtensor.com/learn/core/subnets

Reading the emission column

Emission is the most-read and most-misread column in the subnet directory. It is the percentage of the network’s newly minted TAO this subnet currently captures — not a yield, not a return, and not a promise about tomorrow. Three habits make it useful:

Read the slope, not the level. A subnet climbing from 2% to 4% is being repriced. One that has held 8% for a year is stable, which is a different investment and a much harder subnet to mine competitively.
Divide before you compare. Emission share is what the subnet earns; what a participant earns is that share divided by the miners, or by the staked alpha, competing for it.
It is a market price, not a scorecard. Emission follows stake, and stake follows belief. It is the network’s current opinion of the subnet, which is worth a great deal and is not the same as evidence.

The other columns

Alpha price is the subnet’s token measured in TAO by its AMM pool; it moves with every stake and unstake. Market cap is that price against the alpha in circulation, so it is a valuation rather than an amount anyone could withdraw. Total stake is the pool’s depth, and therefore how much a large exit will move the price — yours or somebody else’s. Miners and validators count who is actually registered and active: many miners means a high quality bar, and many independent validators means scoring that is hard for one party to bend.

Each subnet’s own page adds the things a table cannot show: stake concentration across coldkeys, validator performance, and price history. That is where research actually happens.

The full research workflow → · Building one of your own →

Questions

What is a Bittensor subnet?

A subnet is an individual AI project running on the Bittensor network. Each subnet focuses on a specific AI task — such as text generation, image recognition, distributed training, or financial prediction — sets its own incentive mechanism, and has its own miners and validators. There are over 100 active subnets on Bittensor.

What is dTAO?

dTAO (decentralized TAO) is the subnet-specific token system on Bittensor. Each subnet has its own dTAO market with an automated market maker (AMM) that determines its share of TAO emissions. Staking TAO into a subnet's pool gives you alpha tokens, and the price of alpha reflects the market's valuation of that subnet's contribution to the network.

How do I invest in a Bittensor subnet?

You can stake TAO into any subnet through its dTAO pool. When you stake, you receive alpha tokens for that subnet. If the subnet performs well and attracts more stakers, the alpha price rises. You can unstake at any time to convert back to TAO. Use the subnet directory to compare subnets by price, volume, market cap, and developer activity before staking.

How are Bittensor subnet emissions distributed?

TAO emissions are distributed to subnets proportionally based on the amount of TAO staked into each subnet’s dTAO pool. Subnets with more staked TAO receive higher emissions, which are then distributed to that subnet’s miners and validators based on their performance. The Emission column in the directory shows each subnet’s rank by emission share.

How many Bittensor subnets are there?

The number of active Bittensor subnets changes as new subnets are registered and inactive ones are deregistered. The subnet directory lists every currently active subnet with its dTAO price and performance metrics.

Subnets explained

How subnets compete

Reading the emission column

Read the slope, not the level. A subnet climbing from 2% to 4% is being repriced. One that has held 8% for a year is stable, which is a different investment and a much harder subnet to mine competitively.

Divide before you compare. Emission share is what the subnet earns; what a participant earns is that share divided by the miners, or by the staked alpha, competing for it.

It is a market price, not a scorecard. Emission follows stake, and stake follows belief. It is the network’s current opinion of the subnet, which is worth a great deal and is not the same as evidence.

The other columns

Each subnet’s own page adds the things a table cannot show: stake concentration across coldkeys, validator performance, and price history. That is where research actually happens.