Helicone vs Moda (2026)
Updated March 27, 2026
Overview
Helicone is an open-source LLM observability and proxy platform. By adding a single line of code, developers get request logging, cost tracking, caching, rate limiting, and analytics for their LLM applications. Helicone supports all major LLM providers and offers both proxy and async logging modes. Popular with startups for its generous free tier and simple integration.
Turns agent conversations and tool traces into actionable signals — detects hallucinations, tool-call failures, prompt injections, and user frustration.
Key features
Core capabilities each platform advertises.
- Hallucination detection
- Tool-call failure monitoring
- Prompt injection detection
- User frustration signals
- Actionable trace analysis
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Open-source with 5.2K GitHub stars and strong community support
- Minimal latency overhead (under 1ms for self-hosted)
- Flexible deployment options including cloud-hosted, self-hosted, or SDK-only
- Y Combinator-backed with SOC 2 Type II and HIPAA compliance
- No code changes required for AI Gateway features like caching and rate limiting
Cons
- Adds computational cost and one network hop for cloud deployment
- Limited pricing transparency on website
- May require infrastructure expertise for self-hosted setup
Pros
- Clear Datadog-for-agents positioning that is easy to understand
- Both founders have direct AI agent production experience at Shopify and Notion
- Plain-language signal definition is a strong differentiator vs code-heavy eval tools
- Built-in security monitoring for prompt injection and jailbreaks at no extra config
- Agent replay and batch testing enable rapid debugging of production failures
Cons
- Only 2 people with no disclosed pricing, revenue, or customers
- Crowded observability space with Arize, Braintrust, LangSmith, and Datadog expanding
- No public pricing may slow self-serve developer adoption
- Detection confidence of 87-94% means some failures still slip through
Helicone or Moda — which should you choose?
Choose Helicone if you wantChoose if you want
Choose Moda if you wantChoose if you want
- Agent conversation monitoring
- Safety detection
- User experience optimization
- Trace analysis
Compare Helicone and Moda on your own traffic
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