July 30, 2015, 3:26 p.m. UTC. Ethereum’s first block goes live. Almost five years later, on March 16, 2020, Solana launches its mainnet beta.
Two very different answers to one question: how do you run apps on a blockchain? Many people now hold both, and you can swap ETH to SOL in a few minutes.
Today these are two of the most popular networks in crypto. Before you move money between them, it helps to know what each one actually does.
What Ethereum is
Ethereum is a blockchain built for programs, not just payments. Vitalik Buterin described the idea in the 2014 whitepaper:
“What Ethereum intends to provide is a blockchain with a built-in fully fledged Turing-complete programming language.”
In plain words: anyone can write code that runs on Ethereum. These programs are called smart contracts. They power tokens, lending apps, NFTs, and stablecoins.
Ethereum switched to proof of stake in September 2022, in an upgrade called The Merge. Validators now lock up ETH instead of running power-hungry mining rigs. The Merge cut Ethereum’s energy use by about 99.95%.
A new block arrives every 12 seconds.
Ethereum’s big idea: layers
Ethereum does not try to do everything on its main chain. Much of the traffic moves to Layer 2 networks. These run on top of Ethereum and send summaries back to it.
Think of it as a city. Ethereum’s main chain is city hall, where final records are kept. Layer 2s are busy districts where daily life happens.
Recent upgrades follow this plan. Pectra went live in May 2025. Fusaka followed in December 2025 and made data much cheaper for Layer 2s.
Even so, plans shift. In February 2026, Buterin admitted that Layer 2 progress “has been far slower and more difficult than originally expected.” Ethereum is now pushing its main chain to scale too.
What Solana is
Solana takes the opposite route. One fast chain, no layers. Everything happens in the same place.
Its trick is called Proof of History. The whitepaper describes it this way:
“PoH is used to encode trustless passage of time into a ledger – an append-only data structure.”
Simply put, Solana keeps its own clock. Validators agree on the order of events faster, so blocks come quickly.
How quickly? Solana’s slots dropped from 400 to 200 milliseconds in stages completed in October 2026. That is 60 slots in the time Ethereum makes one block.
Solana’s next step: Alpenglow
Solana’s current finality takes about 12.8 seconds. Alpenglow, a new consensus system, aims to cut that to about 150 milliseconds. Solana itself calls that figure “an expectation, not a constant.”
Alpenglow is scheduled to activate on October 21, 2026. So by the time you read this, it may already be live.
The trade-off: outages
Speed has had a price. According to Helius, Solana suffered seven outages in its first five years.
The longest lasted about 19 hours, in February 2023. Five were caused by software bugs, two by spam.
Solana’s answer is a second validator client called Firedancer. A hybrid version already produces blocks. The full client is still rolling out and does not yet carry enough stake to run the network alone.
Ethereum vs Solana in numbers
Here is how the two compare as of October 19, 2026. Live figures change daily.
| Ethereum | Solana | |
| Launched | July 30, 2015 | March 16, 2020 (mainnet beta) |
| Consensus | Proof of stake | Proof of stake + Proof of History |
| Block or slot time | 12 seconds | 200 milliseconds |
| Simple transfer fee now | about $0.002 | 5,000 lamports, about $0.0005 |
| Value locked in apps (TVL) | $49.85 billion | $5.90 billion |
| Stablecoins on the chain | $144.07 billion | $15.51 billion |
| Market cap | $296.9 billion | $62.29 billion |
Sources: ethereum.org, solana.com, Etherscan, DeFiLlama, CoinGecko. Solana fee converted at SOL ≈ $105.64, our calculation.
Two things jump out. Ethereum holds far more money: more than eight times the TVL and about nine times the stablecoins. Solana is built for raw speed and tiny fees.
Ethereum fees are much lower than many people remember. At the time of writing, a simple transfer costs about a fifth of a cent. Busy days can still push that higher.
Which one fits what you do
Neither chain “wins” everywhere. It depends on the job.
Ethereum tends to fit if you:
- want the deepest pool of apps and stablecoins
- move larger amounts and value a long track record
- are happy to use Layer 2s for cheaper daily activity
Solana tends to fit if you:
- make lots of small transactions
- want near-instant confirmation in one place
- use apps built for speed, like fast trading or games
Many people simply use both. They keep savings on one chain and daily spending on the other. Moving between them is one swap.
Why a SimpleSwap account helps when you use both
If you switch between ETH and SOL regularly, a few account features make life easier.
- Price alerts. Set an alert on the rate you want and swap when it hits.
- Exchange history. Every swap is saved, which helps at tax time.
- Loyalty discounts. Bronze comes with sign-up and gives 5% off service fees. More volume unlocks bigger discounts, and levels never expire.
- Address book in the app. Ethereum and Solana addresses look nothing alike. Saving them prevents costly mix-ups.
With optional KYC, SimpleSwap says users often get better pricing and quicker swaps. Verified users can also see full address data, including a PDF report.
FAQ
Is Solana faster than Ethereum? Yes, on its main chain. Solana slots take 200 milliseconds, while Ethereum blocks take 12 seconds. Ethereum’s Layer 2s narrow the gap.
Which is cheaper, Ethereum or Solana? Solana’s base fee is about $0.0005 per signature. An Ethereum transfer costs about $0.002 right now. Both can rise when the network is busy.
Can I send ETH to a Solana address? No. They are separate blockchains with different address formats. Swap first, then send to the right network.
Has Solana ever gone down? Yes. It had seven outages between 2020 and 2024. A second validator client is being added to make the network sturdier.
Back to those two launch dates, five years apart. Ethereum built a city and is now speeding up its city hall.
Solana built a highway and is now hiring a second road crew. On October 21, Alpenglow switches on, and the race gets a new lap.
Sources: ethereum.org (history, The Merge, Fusaka, whitepaper); Ethereum Foundation blog on Pectra (Apr 23, 2025); Vitalik Buterin via ForkLog (Feb 4, 2026); solana.com (whitepaper, fees docs, Alpenglow page, opened Oct 19, 2026); Helius, history of Solana outages (Feb 23, 2025); Blockdaemon on Firedancer status (2026); Etherscan gas tracker (Oct 18, 2026); DeFiLlama TVL and stablecoin data (Oct 19, 2026); CoinGecko prices (Oct 19, 2026); SimpleSwap FAQ, Loyalty Program and KYC pages (Oct 2026).
This article is for information only and is not financial advice. Crypto prices and fees change quickly.
