Helicone

used in

stacks

LLM observability and cost tracking via proxy or async logging.

hybrid freemium https://www.helicone.ai ↗ repo ↗

Drop-in proxy or async logger that captures every LLM call with cost, latency, prompts, and responses. Strong UI for non-engineer stakeholders to see spend.

Strengths

Drop-in proxy integration
Cost dashboards readable by non-engineers
Open source with managed option

Tradeoffs

Proxy adds a small latency hop (mitigated by async mode)

Used in 13 stacks

Reference: Pay-per-Call API Agent reference

agent-payments

Reference: Single-User Coding Pair Programmer reference

coding-assistant

Reference: Team-Scale Coding Assistant reference

coding-assistant

Reference: Natural-Language Data Analyst reference

data-analysis

Reference: Contract Extraction Pipeline reference

document-processing

Reference: Contract Redline Assistant reference

legal-review

Reference: Brand-Voice Content Generation reference

marketing-content

Reference: Meeting Assistant reference

meeting-assistant

Reference: Incident Response Agent reference

ops-incident-response

Reference: Candidate Sourcing Agent reference

recruiting-sourcing

Reference: Outbound SDR Research + Drafting Agent reference

sales-sdr-outbound

Reference: Mid-Volume Support Triage Agent reference

customer-support-triage

Reference: Inbound Voice Support Agent reference

voice-support

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