Sui Offchain Tunnels Hit 40.6M TPS in AI Agent Test

The Sui blockchain reported a peak throughput of 40.6 million transactions per second during a live offchain demonstration involving more than 10,000 tunnels at Sui Basecamp in Singapore, according to Cointelegraph. The result exceeded the foundation's 20 million TPS target for the event and surpassed a previous July result of about 6.1 million TPS.

More than 10,000 tunnels supported payments, games, and chat activity during the test. CertiK served as the independent auditor, with a detailed review of the test data pending.

Offchain Architecture and AI Focus

The October 7 demonstration tested infrastructure designed for rapid interactions between AI agents. Under Sui's design, transactions take place inside programmable channels that settle to the Sui mainnet when closed.

A tunnel requires an onchain transaction to open and another to close. Activity between those steps runs offchain, allowing participants to carry out repeated interactions without submitting each transaction separately to the blockchain. Closed tunnels are cosigned by participants and can be independently checked onchain.

Mysten Labs co-founder and chief product officer Adeniyi Abiodun led the test, noting that the capacity is intended for automated software agent activity rather than human users.

Ecosystem Growth and Stablecoin Integration

The capacity test builds on Sui's previous infrastructure work, including a partnership with Google's Agentic Payments Protocol as a launch partner for autonomous agent payments. Additionally, the Sui Foundation launched its native USDsui stablecoin via Stripe subsidiary Bridge in March, adding a dollar-linked asset for network applications.

For security auditing, CertiK examined proofs, execution logs, journals, and supporting evidence from the Singapore demonstration, with its final report expected in the coming days.

Key facts

• Sui recorded a peak throughput of 40,614,180 TPS in offchain tunnels during a live demonstration in Singapore.
• The test involved more than 10,000 tunnels supporting payments, games, and chat activity.
• CertiK served as the independent auditor for the stress test.
• The demonstration surpassed Sui's July test, which reached approximately 6.1 million TPS using similar channels.