| Votes | 0 | 0 | 0 |
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| Pricing | Freemium | Freemium | Freemium |
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| Category | Coding | Coding | Coding |
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| Tags | llm-observabilityopen-sourcetracingevaluationprompt-management | llm-observabilityai-gatewayopen-sourcemonitoringcaching | llm-evaluationobservabilityprompt-engineeringci-cdllmops |
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| Best for | - Teams wanting open-source LLM observability
- Data-sensitive teams needing self-hosting
- Prompt and evaluation workflows
| - Teams wanting simple, cheap LLM logging
- Developers self-hosting an open-source gateway
- Cost and usage monitoring across providers
| - Teams making evaluation a first-class part of development
- Organizations wanting CI/CD quality gates for AI
- Product and AI engineering teams iterating on prompts
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| Pros | - Open source with nearly all features MIT-licensed
- Self-host the full product free, no seat or usage caps
- Framework-agnostic (works with or without LangChain)
- Strong tracing, prompt management, and evaluation
- Managed cloud with a free tier available
| - Extremely easy integration via a one-line base-URL swap
- Open source under Apache 2.0 and free to self-host
- Tiny Docker image that runs almost anywhere
- Gateway features like caching, failover, and rate limiting cut cost and improve reliability
- Generous free tier of 10,000 requests per month
| - Deep, eval-first feature set with scorers, experiments, and statistical rigor
- Strong CI/CD integration to catch regressions before deploy
- Usage-based pricing with unlimited users, so no per-seat penalty
- Powerful playground for prompt iteration and comparison
- Tight loop between production logs and evaluation datasets
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| Cons | - Self-hosting still requires running infrastructure
- Enterprise compliance features are commercial
- Cloud Pro tier jumps significantly in price
- Focused on observability, not app building
- Analytics depth may need tuning for large scale
| - Product is in maintenance mode after the Mintlify acquisition, with no roadmap
- Long-term hosted-service viability is uncertain and migration may be needed
- Usage-based overages mean the Pro price is a floor, not a cap
- Short retention on lower tiers (7 days free, 30 days Pro)
- Large price jump from Pro to Team for compliance features
| - Not open source; source-available and hosted model
- Self-hosting locked to the Enterprise tier and a license key
- Big price jump from free to $249 per month
- SSO, RBAC, and self-host are gated behind Enterprise
- Data- and score-based billing makes costs less predictable at volume
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