PostHog AI Observability

Traces every LLM call in your AI product, with prompt, tokens, cost, latency and the user who triggered it

Observability tool by PostHog

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PostHog AI Observability captures prompts, responses, tokens, cost, latency and tool calls, and stitches them into traces. Each trace is linked to the user, their session replay and any exceptions. Evaluations use the trace data to score outputs, and the traces can be queried from the web app, an MCP client or the API.

Use cases: monitoring-observability, llm-evaluation

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Category: Tracing · product analytics
Protocols: mcp

Plans

Free	$0	100K AI observability events per month, resets monthly; evaluations billed with AI observability

From the vendor's pricing page, read Oct 24, 2026.

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Details

License: License unknown
Website: posthog.com/ai-observability
Docs: posthog.com/docs/ai-observability
First seen: Oct 24, 2026
Last checked: Oct 24, 2026
Source: Website Docs Pricing page

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