Source: github.com/langfuse/langfuse/releases/tag/v4.79.0
The AI gateway saw the largest set of changes in this release. OpenRouter, xAI and Vercel AI Gateway were first added as pre-release gateway providers and are now generally available, and extra headers now work on all deployments. Routing also gained separate API formats for OpenAI Decisions and OpenAI Embeddings.
On the observability and evaluation side, MCP tool calls now write read-access events to audit logs, and self-hosted enterprise installs can stage and relay audit events. Trace transcript evaluations can be scheduled, and new MCP tools manage the default evaluation model.
The release also deletes the isAdmin flag and adds pricing for Vertex AI Flex PayGo Gemini calls based on service tiers. The changelog lists further fixes, dependency updates and model pricing additions.
Why it matters if you build agents
Teams routing calls through Langfuse's AI gateway can now treat OpenRouter, xAI and Vercel AI Gateway as generally available providers rather than pre-release ones. Anyone running MCP tools on a self-hosted enterprise install should expect read events to show up in audit logs. Code that reads the isAdmin flag should be checked, since this release deletes it.
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