Bernstein: AI Agents Could Become the Key Growth Driver for Stablecoins

Investment firm Bernstein has identified autonomous AI agents as a potentially transformative force for the stablecoin market. While machine-to-machine payment volumes remain limited for now, the long-term outlook appears compelling, according to a report covered by The Block.

Why Stablecoins Are a Natural Fit for AI Payments

Bernstein analysts believe that fiat-pegged digital assets could serve as the foundation for a new category of transactions — operations entirely initiated, authorized, and executed by software agents or autonomous systems without human involvement.

Stablecoins possess several characteristics that make them ideally suited for these use cases:

• Programmability — payment logic such as escrow arrangements, revenue sharing, or staged fund releases can be embedded directly into the token;
• Micropayment capability — high-throughput blockchains and state channels make massive volumes of small transactions economically viable;
• Global accessibility — AI assistants can pay for compute resources or data in real time, bypassing banks and approval workflows entirely.

Major Players Building Machine Payment Infrastructure

Several prominent companies are already laying the groundwork for agent-to-agent payments. Coinbase is developing the x402 protocol, which integrates payment functionality into the HTTP layer of the internet. Circle has launched a nanopayment system designed for AI agent interactions. Stripe, through its investments in Bridge and Privy, has introduced a machine payment protocol built on the Tempo blockchain.

Stablecoin market capitalization over time. Source: DefiLlama

Current Volumes Remain Modest

Adoption of machine payment protocols is progressing slowly. Stripe's MPP protocol processed just $5,000 in its first week after launch. Coinbase's x402 has performed better, handling approximately $25 million over the past 30 days, but the scale still falls far short of mainstream adoption.

Why This Matters

Bernstein analysts are careful to note that their investment thesis on stablecoins does not hinge solely on AI payments. The sector already exhibits strong demand from consumer and enterprise applications. Growth areas include cross-border business settlements, remittances, and stablecoin-based neobanking with card integrations.

According to the analysts, Circle and Coinbase products remain the most direct vehicles for gaining exposure to the sector's growth. AI-driven payments represent upside optionality, but the core thesis rests on USDC's expanding adoption and deepening liquidity.

Notably, in 2026, Circle's USDC surpassed Tether's USDT in adjusted volume for the first time in seven years — a signal that competitive dynamics within the stablecoin sector are shifting meaningfully.