3 AI agent observability platforms to consider in 2026

Merge offers a comprehensive integration platform that includes the Merge Agent Handler, which enables users to monitor and manage AI agents with features like fully-searchable logs, customizable security rules, and an Evaluation Suite. It is designed to facilitate secure integrations and enhance observability across AI systems, providing enterprise-grade MCP connectors and tools for managing tool call logs and receiving alerts for rule violations. Alongside competing platforms like Maxim AI and Langfuse, Merge stands out for its proven success and continuous innovation, with widespread adoption by various AI companies. Although each platform has its strengths, such as Langfuse's popularity within the developer community and Maxim's robust testing functionality, they also come with limitations in terms of connector support and security features, which are crucial considerations for potential users.