Observability tools: pricing compared
3 observability tools for AI agents, sorted by starting price per month. Prices come from each official pricing page; open a tool for its full plan list and alternatives. Model token costs are billed separately: estimate them with the AI agent cost calculator.
| Tool | From / mo | Pricing |
|---|---|---|
| Langfuse | $29 | Hobby free; Core $29/mo; Pro $199/mo |
| LangSmith | $39 | Developer $0 (5k traces/mo); Plus $39/seat/mo (10k traces) |
| Helicone | $79 | Free 10k requests; Pro $79/mo; Team $799/mo |
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