Layer 1 Comparison 2026: Ethereum Leads, Sui TVL Falls 85%

The Layer 1 Blockchain Comparison for 2026

This layer 1 blockchain comparison starts with DefiLlama's live chain data, which puts combined TVL across Ethereum, Solana, Avalanche, Sui, Aptos, NEAR, and Cardano at roughly $47.1 billion. Ethereum alone accounts for $41.24 billion of that, about 87.6% of the total (DefiLlama, Chains API). Solana is a distant second at $4.80 billion. Avalanche, Sui, Aptos, NEAR, and Cardano combined hold under $1.1 billion between them.

That concentration is the central fact of this layer 1 blockchain comparison: Ethereum holds the dominant share of DeFi TVL across the seven chains this snapshot covers, the metric this comparison uses to gauge where capital sits. That is a statement about this seven-chain DeFi-TVL snapshot, not a verdict on the broader "multi-specialized market, no single winner needed" framing that circulated in early 2026, which this comparison does not adjudicate. What this comparison traces in detail is Sui's TVL decline and Aave's wind-down of its Aptos deployment, the two declines the data below documents.

Ethereum: Shipped Its Scaling Upgrade, Still Owns the Ledger

Ethereum's Fusaka upgrade went live on mainnet on December 3, 2025. It activated PeerDAS and raised blob capacity for rollups, a change ethereum.org's own roadmap page describes as enabling up to an 8x increase in blob throughput as blob-count targets rise (ethereum.org/roadmap/fusaka). Fusaka is finished business by now.

The next upgrade, Glamsterdam, centers on enshrined proposer-builder separation (EIP-7732) and block-level access lists (EIP-7928). It has already slipped once, from an original June 2026 target to a Q4 2026 mainnet window, per ethereum.org's own roadmap. Anyone pricing Glamsterdam into a Q2 2026 thesis is already working from a stale date.

Key Strengths:

• Largest and most liquid DeFi base by a wide margin: $41.2 billion TVL versus Solana's $4.8 billion
• Fusaka shipped on its revised schedule, expanding L2 blob capacity ahead of Glamsterdam; this article has no before-and-after fee data measuring the effect on L2 data costs
• BlackRock's BUIDL fund launched on Ethereum before any other chain

Key Risks:

• Glamsterdam has already missed one target date, and a further slip beyond Q4 2026 is openly flagged rather than ruled out
• Whether L2 fee capture is concentrating around a handful of rollups instead of accruing to the base layer; this article has no fee series establishing either the concentration or its trend

For more on Ethereum's institutional positioning, see our analysis on why 2026 could be Ethereum's year.

Solana: The Performance Bet, Running Behind Its Own Roadmap

Solana's validator-client migration is real, but it moves slower than the 2026 hype implied. As of August 10, 2026, the full Firedancer client runs on 57 of 698 active validators, representing 11.64% of total staked SOL. The hybrid Frankendancer client had reached roughly 26% of validators by the time full Firedancer launched in December 2025 (Solana Compass, Firedancer tracker), a validator-count share rather than a stake-weighted one, so it cannot be added to full Firedancer's 11.64% stake figure. The full Firedancer client alone accounts for 11.64% of staked SOL; Frankendancer's stake share is not published in this source, so the combined stake footprint of the Jump Crypto codebase cannot be totaled here, only stated to exceed that 11.64%.

Alpenglow, the consensus upgrade meant to cut finality from 12.8 seconds to roughly 150 milliseconds, has moved too. It was never going to ship in Q1-Q2 2026 as originally floated. Agave 4.2 began a phased mainnet rollout in mid-August 2026 carrying the Alpenglow codebase for testing only, with the activation switch left off; full activation now targets Agave 4.3 in October 2026 (Tech Times, August 14, 2026).

Solana's TVL, a fraction of Ethereum's, is still more than 10x Avalanche's. But an investor pricing in Alpenglow within 2026's first half is pricing in a delay that has already happened once, from the original Q1-Q2 target to October.

Avalanche: A Sourced RWA Growth Number

Avalanche's general DeFi TVL is small next to Ethereum and Solana, $416 million per DefiLlama, but its real-world-asset segment has a verifiable, recent growth number behind it. BlackRock's BUIDL tokenized Treasury fund held roughly $900 million on Avalanche as of July 12, 2026, close to a third of BUIDL's entire $2.87 billion footprint across every chain it supports. Total distributed RWA value on Avalanche reached about $2.1 billion by that date, up more than 58% over the prior 30 days, with BUIDL alone accounting for roughly 43% of it (crypto.news, July 12, 2026).

The subnet advantage. Avalanche's custom subnets let institutions run compliant, permissioned environments without leaving the Avalanche stack. The RWA growth documented above, BUIDL's roughly $900 million allocation and the broader $2.1 billion in distributed RWA value, is Avalanche-specific data; this article has no comparative figures on RWA issuers deploying directly on Ethereum mainnet, so it does not claim issuers are choosing Avalanche's model over Ethereum's, only that Avalanche's own RWA segment is growing. The bull case this data supports is specific: Avalanche's RWA segment grew more than 58% over the trailing 30 days.

The Chains Losing the Argument: Sui and Aptos

Early-2026 coverage treated Sui and Aptos as the fastest-growing Move-language challengers. Whether they still are, this article cannot test: it has no developer-activity data. What the DeFi capital data does show is a steep decline on both chains.

Sui's TVL peaked at $2.64 billion on October 9, 2025, on DefiLlama's chain series (DefiLlama chain history). DefiLlama now shows it at $404.9 million, a decline of roughly 85% from that peak. Aptos is smaller still, at $57.9 million, down from $759 million in October 2025, a decline of roughly 92% on DefiLlama's chain series (DefiLlama chain history). Aptos is also losing a specific, checkable institutional relationship. Aave founder Stani Kulechov said on July 30, 2026 that the protocol would wind down Aave deployments on six chains, Aptos among them, a move informed by risk assessments from Aave's risk provider LlamaRisk. Those assessments document a 94% decline in Aptos deposits over six months, down to $1.7 million supplied and $719,000 borrowed (crypto.news, Aave chain wind-down). Aptos was not even the largest of the six chains being wound down; Sonic held more, at $7.6 million supplied. But the direction is the same across the six: Aave is exiting, including from chains whose deposits collapsed; Aptos deposits fell 94%.

Neither chain is dead. Sui's Mysticeti consensus still delivers sub-second finality, and cumulative account and transaction counts kept climbing through the TVL decline, though cumulative totals rise by construction and cannot by themselves show whether the network is retaining users; this article has no active-address, transaction-rate, or cohort-retention data over the same period to settle that question. What the TVL data does show is that the dollar value locked in specific DeFi positions fell; DefiLlama's TVL figure is denominated in USD, so this decline does not by itself distinguish withdrawals from a drop in the price of the locked assets, and this article has no net-flow or token-denominated data to make that distinction. "Developer momentum" and "institutional confidence," the two claims most often made for these chains earlier in 2026, cannot be tested with the data this article has; what the record does show is that one of the largest DeFi protocols, Aave, is on record winding down its Aptos deployment.

NEAR: A Narrower but More Durable Story

NEAR's DeFi TVL is modest at $92.8 million (DefiLlama), well below even Sui and above only Aptos and Cardano in this comparison. What differentiates NEAR is architecture rather than a TVL line: Chain Signatures let a single NEAR account control assets on Bitcoin, Ethereum, and Solana through MPC without a separate bridge contract. That is a product claim, not a capital-flow claim, and it is worth keeping the two apart when a chain's headline TVL is this small.

Layer 1 Blockchain Comparison: TVL and STRICT Score

Layer 1 blockchain comparison, ranked by TVL:

STRICT scores are Coira's own composite of sustainability, transparency, revenue, innovation, community, and tokenomics. TVL is DefiLlama's live figure as of this writing and will move day to day; treat the table as a snapshot, not a fixed ranking. Aptos sits at CAUTION here rather than the ACCUMULATE it carried in earlier 2026 coverage specifically because of the Aave wind-down and the TVL collapse documented above, not because its underlying technology regressed.

What Changed in This Layer 1 Blockchain Comparison Since Early 2026

This comparison documents two concrete declines rather than a verdict on the specialization thesis as a whole: Sui's TVL fell from a $2.6 billion peak to under $500 million, and Aptos's institutional DeFi standing weakened now that Aave is winding down its deployment there. TVL alone does not establish or disprove dominance in an unspecified vertical, so this article does not extend a specialization verdict, positive or negative, to Ethereum, Solana, Avalanche, NEAR, or Cardano.

The broader lesson for anyone sizing a position off a TVL ranking or an upgrade timeline: check the date on every number first. A chain's TVL, an upgrade's target quarter, and a protocol's chain-support list can all go stale within weeks in this sector. This article's own earlier version overstated Firedancer's validator share, missed Alpenglow's delay to October, and never mentioned Aave's Aptos wind-down, because those numbers were written once in February and never revisited.

Investment Implications

For readers prioritizing current DeFi capital depth: Ethereum for TVL depth and a shipped scaling upgrade, plus Solana for TVL scale ahead of Avalanche, while treating Alpenglow as an October 2026 event rather than a first-half one. This is a preference for one measured characteristic, not a risk assessment: this article presents no volatility, drawdown, or correlation data.

For readers tracking RWA issuance specifically: Avalanche is the only chain in this piece with a sourced RWA growth figure, the BUIDL and tokenized-Treasury numbers above; this article has no comparable RWA figures for the other chains, so it cannot rank them on it.

What not to price in: Sui and Aptos's early-2026 "fastest-growing challenger" framing as a standalone reason to hold. This article has no developer-activity data for either chain; what it can show is that DeFi capital on both has fallen steeply and that one of Aptos's headline 2025 institutional wins, the Aave deployment, is being unwound.

For portfolio construction guidance, see our guide on crypto diversification beyond Bitcoin.