Orb

Orb is a usage-based billing platform founded in San Francisco in 2021 by Alvaro Morales and Kshitij Grover. It raised $19.1 million in 2023, then a $25 million Series B led by Mayfield in September 2024 that took total funding to $44.1 million. Menlo Ventures, Greylock, South Park Commons and Uncorrelated Ventures are also on the cap table. In January 2026 the company rebranded from a billing platform to what it now calls the revenue design company. Five months later Adyen agreed to buy it for $335 million in cash, and the deal closed on July 1, 2026. Orb now runs as a wholly owned Adyen subsidiary under what Adyen calls an incubator model. It has told customers it will keep operating as a stand-alone product, and that they can still choose their own payment processing partner. Named customers include Vercel, Replit, Supabase, Glean, Neo4j, Redis, LaunchDarkly and Writer.

Pricing and how it works

Orb publishes nothing. The pricing page lists three tiers, Core, Advanced and Enterprise, and every one of them reads Custom pricing. Orb says the bill runs off two meters of its own: total invoice billings you issue to your end customers, and raw events ingested, with an additional platform fee on Advanced and Enterprise. Orb pulled an earlier public rate card. The third-party tracker AI Billing still models roughly $720 per month for a small deployment, but says that figure comes from the withdrawn page rather than a live quote. There is no free tier and no published trial. Advanced adds data warehouse sync, Salesforce, NetSuite, customer hierarchy and premium support. Enterprise adds SLAs and dedicated support. Expect a sales cycle before you see a number.

Who it is for

Orb suits AI and infrastructure companies whose pricing changes faster than an engineering team can ship it: token and inference metering, credit burn-down, hybrid platform fees stacked on consumption, quantities adjusted mid-cycle. It handles high event volumes and lets you define billable metrics in SQL, which is why developer-tool companies pick it. That flexibility is also the cost. There is no hosted checkout and the customer portal is read-only, so a team without billing engineers will spend real time on setup, and some G2 reviewers describe still fighting the data model months into a deployment.

What Orb is not

Orb is not a merchant account, an acquirer or a payment gateway. It never underwrites you and it never touches your money. Cards, ACH, Stripe Link and wallet payments are collected through a gateway you already hold, and Orb supports Stripe and Adyen for that. Invoices sync one way to Bill.com, Stripe Invoicing, QuickBooks and NetSuite, and tax runs through Avalara, Anrok, Numeral, Sphere, Stripe Tax and TaxJar. Adyen ownership sharpens a question rather than settling it: Orb says multi-gateway support stays, but a merchant processing with a rival acquirer is trusting a roadmap promise. Benchmark Orb against Metronome, Lago and Zuora, not against processors.