Best Observability & Monitoring
9 tools evaluated. Ranked by ecosystem strength, data quality, and developer experience.
Helicone
Acts primarily as a Proxy, meaning you get caching, rate limiting, and logging instantly by just changing your base URL. Extremely low friction.
Strong Alternatives
Sentry
The developer-focused standard for error tracking, offering deep integration with source code to show exactly which commit caused a crash.
Weights & Biases
Industry standard for ML experiment tracking; W&B Weave extends to LLM app tracing and evaluation alongside traditional ML workflows.
Arize Phoenix
The focus on 'Embedding Analysis'—visualizing your vector space to see why retrieval failed. Also fully open-source local server.
Best Pick by Use Case
The right tool depends on who you are and what you're optimizing for.
Prioritizes speed, cost, and simplicity. Needs to ship fast on a budget.
Helicone has a free tier.
Runner-up: Sentry
Prioritizes maturity, compliance, support, and scalability over cost.
Helicone has enterprise support.
Runner-up: Sentry
Prioritizes free tiers, good docs, and low setup friction.
Helicone has a free tier and is open source.
Runner-up: Sentry
Prioritizes flexibility, multi-project support, and professional tooling.
Helicone is open source and has enterprise support.
Runner-up: Sentry
Also Tracked5 more
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