OpenCode: token usage, costs, and access control

OpenCode is an open-source, terminal-first AI coding assistant that supports multiple model providers. As usage scales, managing token costs, observability, and governance becomes challenging across different providers. An AI gateway like Portkey provides centralized control for tracking usage and costs, monitoring agent workflows, enforcing guardrails on model access and outputs, and implementing access control with budgets and rate limits. This approach adds operational structure without changing how developers interact with OpenCode.