Sablier Labs Enters Maintenance Mode, Halts Development

Sablier Labs, the token-streaming and vesting infrastructure company, has stopped active product development and entered maintenance mode until June 2028, co-founder and CEO Paul Berg announced Monday.

Existing streams, vesting plans and airdrops are unaffected, Berg said, because "the Sablier smart contracts are onchain and permissionless" and don't depend on the company staying in business. Starting July 13, 2026, the official interface stopped accepting new vesting streams and airdrops with end dates beyond June 2028, and blocked open-ended payment streams entirely, according to Berg's post.

Berg attributed the decision to a sharp Q1 2026 decline in usage and revenue, even as the company shipped its most features ever that quarter. He pointed to two causes: customers postponing token launches as crypto markets deteriorated, and AI-assisted coding making it cheaper for competitors to replicate Sablier's products.

"There isn't a venture-scale business in onchain token distribution/money streaming," Berg wrote, adding the market isn't large enough to justify continuing.

Open-Sourcing the Code

Sablier also accelerated the license conversion on its primary EVM smart contracts, moving the switch from Business Source License 1.1 to the fully open GPL license from July 1, 2029 to July 13, 2026, immediately. The company said this lets the community fork, modify and deploy the contracts without restriction.

Sablier reported more than 345,000 Ethereum addresses have interacted with its protocol across over 837,000 transactions and 547,000-plus vesting plans, airdrop claims and payment streams, deployed to more than 30 EVM chains plus Solana. Berg said the protocol recorded zero security incidents across its history holding user funds.

Berg said he plans to take a short break before returning to build in crypto.