# Somnia SRB

SOMISRB is a benchmark representing the mean, annualized staking rate across all active Somnia validators.

SOMISRB is calculated and published by Staking Rewards via the [Somnia Profile](https://www.stakingrewards.com/asset/somnia) and [Data API](https://www.stakingrewards.com/data-api).<br>

> **TL;DR:** Somnia is a high-throughput EVM-compatible L1 with delegated PoS (MultiStream consensus). Staking rewards come exclusively from gas fees -- 50% of fees go to validators/delegators and 50% are burned. The reward rate is derived from cumulative on-chain validator rewards annualized over days since mainnet launch, divided by total staked tokens. With a fixed supply of 1 billion SOMI and no inflation, the model is deflationary.

$$
SOMISRB = (tar / dsl) \* 365 / ts
$$

<table data-full-width="false"><thead><tr><th width="141">Formula key</th><th width="250">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>tar</td><td>Total Accumulated Rewards</td><td>The sum of all validator accumulated unclaimed rewards, read from the on-chain staking contract across all active validators</td></tr><tr><td>dsl</td><td>Days Since Launch</td><td>The number of days elapsed since Somnia mainnet launch (September 2, 2025), used to normalize cumulative rewards into a daily rate</td></tr><tr><td>ts</td><td>Total Staked</td><td>The total amount of SOMI tokens staked across all validators, read from the on-chain totalStaked() function on the staking contract</td></tr></tbody></table>

* **Non-compounded**: SOMISRB excludes returns from reinvestment of rewards, presenting the base annualized rate.
* **Fee-Based Rewards Only**: Somnia has zero inflation. All staking rewards derive from gas fees: 50% of transaction fees are distributed to validators and delegators, while the remaining 50% are burned, making the model deflationary.
* **All Rewards Counted**: Includes both claimed and unclaimed staking rewards across all validators.
* **Cumulative Normalization**: The reward rate is calculated from total accumulated rewards since mainnet launch, averaged over the elapsed days. This means the rate will stabilize over time as the observation window grows.

***

### Somnia Staking Model

Somnia is an **EVM-compatible Layer 1 blockchain** using MultiStream consensus -- a high-throughput delegated Proof of Stake mechanism achieving sub-second block times.

Here's how the staking model works:

1. **Delegated PoS**: Token holders delegate SOMI to validators via the staking contract (`0xBe367d410D96E1cAeF68C0632251072CDf1b8250`). Validators participate in block production and consensus.
2. **Fee-Based Rewards**: Unlike most PoS chains, Somnia has no block inflation. Staking rewards come exclusively from gas fees. Each transaction's gas fee is split: 50% to the validator set (proportional to stake) and 50% burned permanently.
3. **Fixed Supply**: The total supply is capped at 1,000,000,000 SOMI with no minting mechanism. The fee burn makes the token supply deflationary over time.
4. **Active Validator Set**: Currently 31 active validators secure the network.
5. **Commission**: Validators charge a commission on delegator rewards. The current standard commission rate across all validators is 50%.

***

### Validator-Level SRB: SOMISRB(v)

$$
SOMISRB(v) = SOMISRB \* (1 - c)
$$

<table data-full-width="false"><thead><tr><th width="141">Formula key</th><th width="176">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>c</td><td>Commission</td><td>The validator's commission rate, representing the percentage of delegator rewards retained by the validator. Currently 50% across all validators.</td></tr></tbody></table>

***

### Observation Period

1. Determined based on cumulative rewards accumulated since Somnia mainnet launch (September 2, 2025) up to the point of evaluation.
2. Annualized by converting the cumulative daily average into a year-long projection (multiplied by 365).

***

### Calculation Frequency

The calculation happens every 6 hours and is immediately published via [Data API](https://www.stakingrewards.com/data-api).

***

### Slashing

Slashing is not currently implemented in the Somnia network. SOMISRB does not factor in the possibility of slashing occurrences.

***

### SOMI Real Reward Rate: SOMISRB^R

The real reward rate calculates the SOMISRB adjusted for inflation in the network.

$$
SOMISRB^R = 1+SOMISRB /(1+ir)-1
$$

<table data-full-width="false"><thead><tr><th width="150.33333333333331">Formula key</th><th width="187">Metric name</th><th>Description</th></tr></thead><tbody><tr><td>ir</td><td>Inflation Rate</td><td>The annual rate at which SOMI supply increases. Since Somnia has a fixed supply with no minting mechanism, the inflation rate is 0%.</td></tr></tbody></table>

{% hint style="info" %}
**Inflation Rate Behaviour**

Somnia has a **fixed total supply of 1,000,000,000 SOMI** with no inflation mechanism. There is no token minting -- the inflation rate is permanently 0%. In fact, the 50% fee burn makes the effective supply deflationary over time. Because the inflation rate is zero, the real reward rate equals the nominal reward rate: SOMISRB^R = SOMISRB. The current reward rate is relatively low (\~0.25% APR) because rewards are derived purely from gas fees, and current network gas usage is modest. As network adoption and transaction volume increase, the reward rate is expected to grow proportionally.
{% endhint %}

***

### Other Somnia metrics calculated by Staking Rewards:

<table><thead><tr><th width="210">Metric</th><th>Description</th></tr></thead><tbody><tr><td>Staked Tokens</td><td>The total number of SOMI tokens staked across all validators, read from the on-chain totalStaked() function.</td></tr><tr><td>Delegated Tokens</td><td>The number of SOMI tokens delegated to validators by external delegators.</td></tr><tr><td>Self Staked Tokens</td><td>The number of SOMI tokens bonded by validators directly from their own balance.</td></tr><tr><td>Active Validators</td><td>The number of active validators in the Somnia network (currently 31).</td></tr><tr><td>Benchmark Commission</td><td>The median commission rate across all active validators (currently 50%).</td></tr><tr><td>Staking Ratio</td><td>The percentage of total SOMI supply that is staked, calculated against the total supply of 1,000,000,000 SOMI.</td></tr></tbody></table>

***

#### Data Sources:

* [Staking Rewards](https://www.stakingrewards.com/) from on-chain Somnia Staking Contract (`0xBe367d410D96E1cAeF68C0632251072CDf1b8250`) via Somnia mainnet RPC
* [CoinGecko](https://www.coingecko.com/) for SOMI price data

***

#### References:

* <https://somnia.network/>
* <https://docs.somnia.network/>
* <https://www.stakingrewards.com/asset/somnia>

***

:books: [Learn more about SOMI Staking](https://www.stakingrewards.com/asset/somnia)

:bar\_chart: [Calculate your SOMI Staking Rewards](https://www.stakingrewards.com/calculator?asset=somnia)

:gear: [Access historic Somnia Staking Data via API](https://www.stakingrewards.com/data-api)

```
Last updated on 04/10/2026
```


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