01Metronome
High: agent billing thought leader
Acquired · now part of Stripe
Usage based billing infrastructure: from 0.8% of billing volume + $0.04/1,000 events · metronome.com
Usage based billing infrastructure built for AI/software companies handling high event volumes, with reported customers including OpenAI and Nvidia. Acquired by Stripe, with the deal completed in January 2026: the site now reads "Metronome, a Stripe product," so evaluate it as Stripe billing infrastructure going forward, not a standalone vendor.
Agentic angle: The most substantive agent specific billing thinking we found in any category: Metronome's own engineering blog describes sub pool credit allocations per API key or per agent, and machine readable pricing an agent can query before acting. That thinking has shipped: Metronome publishes a first party MCP server (@metronome/mcp) inside its official Node SDK, bearer token authenticated, exposing writes including contract creation and usage ingestion. Verified against vendor documentation, 21 Aug 2026.
02m3ter
Medium: inferred, not documented
Acquired · now part of Salesforce
Usage based billing infrastructure: custom pricing · m3ter.com
Usage based billing infrastructure for B2B SaaS companies with complex consumption pricing, syncing rated usage into CRM/ERP systems. Salesforce signed a definitive agreement in June 2026 and closed the acquisition by July 2026, ahead of schedule: m3ter's own site now reads "m3ter is now part of Salesforce." Treat this as an Agentforce billing component, not an independent purchase.
Agentic angle: No documented per agent action billing construct in m3ter's own materials pre acquisition: the "agentic billing" angle here is Salesforce's stated rationale for the deal (consumption billing for Agentforce), not something m3ter itself had shipped and documented independently.
03Orb
High: dedicated AI/agent solutions
No affiliate program
Usage based billing infrastructure: custom / contact sales · withorb.com
Usage based billing infrastructure and the most notable independent alternative left standing in this category now that Metronome and m3ter have both been acquired. Publishes case studies specifically on pricing AI agent products.
Agentic angle: Runs a dedicated AI/agent solutions page and published case studies (including AI native customer Factory) on how to price autonomous agent usage: genuine, if less deeply documented than Metronome's engineering content.
04Chargebee
Medium: MCP, limited write scope
No verified affiliate program
Subscription & usage billing platform: from $0 platform fee + 0.80% of billing volume · chargebee.com
A broader subscription and usage based billing suite (billing, lightweight CPQ, revenue recognition) than the pure metering specialists above, aimed at SaaS companies from mid market to enterprise wanting one platform for recurring and usage billing.
Agentic angle: Chargebee publishes three first party MCP servers (Knowledge Base, Data Lookup and Onboarding) plus configurable custom servers with per tool input constraints. The limit worth knowing: the Onboarding server writes to test and sandbox sites, not production billing, so this is agent assisted configuration rather than an agent acting on live revenue. Corrects our earlier finding of no agent specific documentation. Verified against vendor documentation, 21 Aug 2026.
Visit Chargebee →
Runs a partner hub with undisclosed commission terms, not a confirmed public affiliate program.
05DigitalRoute
Limited: agentic claims unconfirmed
No affiliate program
Usage mediation & monetization platform: custom / enterprise pricing · digitalroute.com
A usage mediation and monetization platform ("UsageCloud") with 25+ years of telecom and CSP roots, now explicitly broadened to target AI, SaaS, and cloud/IT services companies as well: the only vendor in this category still primarily built around telecom grade mediation infrastructure.
Agentic angle: Uses general "agentic monetization" language in its marketing, but we found no specific documentation of per agent action or agent outcome metering constructs: evaluate the enterprise mediation capability on its own merits, not the AI framing.