HELICONE
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Langfuse vs Braintrust vs Helicone: Choosing an LLM Observability Stack in 2026A fair, sourced comparison of the three LLM observability platforms teams reach for once agents hit production: Langfuse's open-source tracing and prompt management, Braintrust's eval-first workflow for regressions, and Helicone's drop-in proxy for logging and cost control. Architecture, pricing model, self-hosting, and which to pick by workload.
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