Beyond Ethereum and Solana, Which Layer 1s Are Actually Worth Watching in 2026?

“Which L1s are worth watching besides Ethereum and Solana?” Before 2024 the question still carried a “challenge the throne” subtext. By 2026 reality has flattened that out—Ethereum kept its developer base via Layer 2s, Solana defended its high-throughput app and memecoin territory, and the surviving L1s stopped framing themselves as ETH-killers. Instead they each found a differentiated niche. This isn’t a top-L1 ranking; it’s a map placing the chains still doing serious work side by side, asking what problem each one actually solves and how it relates to Ethereum and Solana.

The Big Picture: 2026’s L1 Quadrants

A year and a half ago “general-purpose smart contract platform” was still a sufficient label. In 2026 the lane has split into at least four:

• Generic EVM, high-performance — Avalanche, Monad, BSC. The pitch is “EVM-compatible but faster and cheaper.”
• Move-family — Sui and Aptos, both descended from Diem, both betting on the Move execution model.
• Application-oriented L1s — Berachain (DeFi liquidity native), Hyperliquid (perpetuals native), and similar—designed around a single vertical.
• Modular data layers — Celestia and its peers. Not L1s in the classical sense, but the critical infrastructure new L1s now depend on.

For a panorama, see the Layer 1 guide and Solana vs Ethereum.

Here’s a side-by-side cheat sheet of the chains we’ll cover:

Avalanche: Where the Subnet Bet Stands Now

Avalanche’s most interesting story over the last two years isn’t its C-Chain mainnet—it’s the Subnet track, which lets any team launch an application chain with its own rules, economics, and VM while inheriting security from the Avalanche mainnet. Background sits in the Avalanche subnet primer.

Why look at this again in 2026? Because enterprise and gaming demand for “independent chains” has been validated—they don’t want a new ETH, they want a configurable on-chain space where performance, compliance, and parameters are theirs to set. The Ethereum Layer 2 stack can do this too, but with more shared-environment constraints. Avalanche subnets fit that demand. The watch item is whether the subnet economic model lets mainnet AVAX continue to capture value.

Sui and Aptos: Two Roads Out of Move

Sui and Aptos both came out of Diem and both adopted Move, but they diverge. Sui combines an object model (each digital asset is an independently addressable object) with parallel execution, aiming to let transactions “step around each other” as much as possible. Aptos stays closer to the traditional block structure but rewrites BFT consensus and pipelined block production for high throughput and low latency.

Both ecosystems shipped a real wave of apps in 2026—Sui’s DeFi and gaming growth is more visible, while Aptos is penetrating Asian markets and certain financial flows faster. The biggest Move-family question is still the developer ecosystem—Move’s learning curve is higher and the tooling thinner than mature Solidity/EVM stacks. The 12-month watch item is whether either chain produces a “had to be on Move” killer app.

Monad: Pushing EVM Equivalence Into the High-Performance Zone

Monad is one of the most-discussed L1s of 2025–2026. Its design goal is a single sentence: stay EVM-equivalent while pushing TPS into Solana territory. The team rebuilt parallel execution (via optimistic concurrency), state access, and the consensus layer from the ground up.

Why this matters: it directly challenges the assumption that “high performance requires leaving EVM behind.” If Monad’s mainnet sustains expected performance under real load, it could become the EVM ecosystem’s “high-performance patch layer”—developers don’t relearn a language or migrate tooling, and they get a Solana-like experience. The watch item is mainnet stability under genuine load and the speed of app migration.

Berachain: Can Proof of Liquidity Actually Hold Up?

Berachain’s 2025 mainnet launch triggered a serious debate because it picked an unusual application-oriented L1 angle—it makes liquidity provision a core consensus incentive (Proof of Liquidity, PoL), requiring validators to continuously feed and lock DeFi liquidity into the ecosystem to keep producing blocks.

The intent is clear: make DeFi-native integration the moat. It rhymes with the Hyperliquid “rebuild the whole chain for one application class” approach; reference reading in the Hyperliquid intro. The watch item is whether PoL holds up in a bear market—liquidity incentives are reflexive: everything works on the way up, and on the way down the spiral can be hard to stop.

Celestia and Modular Data Layers: Not L1s, but Shaping the Next Wave

The last category that can’t be skipped is the modular data availability layer, with Celestia as the flagship. Celestia doesn’t run general smart contracts; its job is to give Rollups and L2s cheap, verifiable data availability. Mechanics in the modular blockchain Celestia primer; PoS security-model exposures are covered in ETH staking risks.

Why include it under “L1s worth watching”? Because the new wave of application chains and niche Rollups launched in 2026 increasingly pin their DA on Celestia instead of Ethereum mainnet. Celestia’s customer growth therefore reflects whether the next wave of L1s keeps expanding at all. It isn’t a substitute for Ethereum—it’s an upstream supplier—but its trajectory is a leading indicator for the whole category.

2026 Data and Real Risks, Chain by Chain

Pinning commonly-cited 2026 numbers next to each chain sharpens the view:

• Avalanche — subnets grew from single digits to 50+ by 2026; TVL concentrates in a few enterprise subnets. Risk: AVAX value capture from subnets unclear; tapered incentives hurt long-tail subnets.
• Sui — stablecoin TVL crossed $1B in 2025; object model gives orderbooks and game assets materially better UX than EVM. Risk: Move tooling and audit depth lag Solidity by an order of magnitude.
• Aptos — solid Asia and TradFi deals, but developer activity trails Sui. Risk: with Sui owning Move’s narrative, “the other Move chain” thins.
• Monad — late-2025 mainnet claims 10,000+ TPS parallel EVM; sustained real-load throughput still being proven. Risk: high-TPS vs. decentralization may replay early-Solana halts.
• Berachain — TVL spiked at PoL launch; post-incentive retention not fully public. Risk: PoL reflexivity—liquidity out → yield down → more liquidity out.
• Celestia — DA customers grow steadily; per-block-space price squeezed by EigenDA and Ethereum blobs. Risk: DA may be absorbed by Ethereum-native solutions.

Not every L1 deserves allocation, but several genuinely change the old “nothing beyond Ethereum and Solana” view.

The Next Card on the L1 Table

Back to the opening question: what’s worth watching beyond Ethereum and Solana? The answer isn’t a single replacement L1; it’s that the L1 lane shifted from a single-track race to multiple coexisting tracks. Generic EVM, Move-family, application-oriented, modular DA—each tells a different story, and the underlying capital flows, developer migration patterns, and user distributions look nothing like the old “who has more TPS.” Whether an L1 deserves your attention isn’t a TPS question anymore; it’s whether its differentiated niche is paying out in the market. This article is not investment advice—L1 investing carries substantial price volatility.