Langfuse 4.56.0 adds spend alerts and richer agent observability

Langfuse released a substantial observability update covering spend alerts, session previews, evaluation results and MCP query behaviour.

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Summary

Version 4.56.0 adds spend alerts for ClickHouse-billed organisations and syntax highlighting in session-tool previews. It also revises evaluation-result views, improves agent-session handling and requires date ranges for the observations MCP tool.

Why it matters

These changes improve the operational feedback loop for teams evaluating and running LLM applications and agent workflows.

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Sources

https://github.com/langfuse/langfuse/releases/tag/v4.56.0

Summary

Why it matters

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Sources