Agent Observability Platforms in 2026

A 2026 comparison of agent observability platforms (LangSmith, SmithDB, Honeycomb, Arize, LangFuse, Helicone, Phoenix, Superlog). Every infra team in the AI space is asking what agent observability actually means for them and which platform to pick, but the conversation collapses three different layers into one word. This guide separates those layers before comparing vendors, and points out the layer most teams still miss.

• URL: https://www.puppyone.ai/en/blog/agent-observability-platforms-2026
• Owner Name: Steve Mu
• Owner Email: support@puppyone.ai
• Meta Keywords:

  agent observability, LLM observability, AI agents, LangSmith, Langfuse

• Meta Description:

  A 2026 comparison of agent observability platforms and the layer most teams still miss.