Enterprise AI Coding Agents Still Pay Anthropic: Why the Harness Pays
Coinbase, Shopify and Ramp each built their own in‑house coding agents, but they still license Anthropic’s models for the reasoning core. The secret is the ‘agent harness’—a durable execution environment that handles context, permissions, orchestration and verification—letting firms own the workflow while keeping frontier models as a service. This shifts competitive advantage from the model to the platform.