Lunary
llm-observability
Open-source LLM observability and prompt management for chatbots and RAG
Pricing
Free plan
Rating
—
Votes
0
Head-to-head comparison
Lunary vs Fiddler AI
Compare Lunary and Fiddler AI side by side across pricing, features, ratings, pros, cons, best-fit use cases, and alternatives.
Fiddler AI
llm-observability
Enterprise AI observability and security for LLMs, agents, and ML models
Pricing
Contact
Rating
—
Votes
0
Feature comparison
Feature
Lunary
Fiddler AI
Category
llm-observability
llm-observability
Pricing
Free plan
Contact
Free plan
API access
Mobile app
Browser extension
Team collaboration
Custom training
Self-hosted option
Offline mode
Multi-language support
Lunary pros and cons
Open source under Apache 2.0
Self-hostable with no per-event cost
Lightweight and fast to set up
Model-agnostic with LangChain and OpenAI support
Free cloud tier capped at limited daily events
Lighter feature set than enterprise LLMOps suites
Smaller team and community than larger platforms
Fiddler AI pros and cons
Established pioneer in AI observability
Covers both LLMs and classic ML
Real-time monitoring and guardrails
Model explainability and bias detection
Custom, sales-led pricing only
No public free tier
Enterprise focus excludes small teams
Which one should you choose?
Best overall signal
Lunary
Selected using Toolglade popularity signals such as views and votes.
Best value signal
Lunary
Selected using free-plan availability and engagement signals.
Best for
Lunary
- chatbot observability
- RAG monitoring
- open-source LLMOps
- Chatbot and RAG builders
- Teams wanting open-source observability
Fiddler AI
- Enterprise AI monitoring
- LLM and agent security
- ML model observability
- Large enterprises
- AI/ML platform teams
FAQ
Is Lunary better than Fiddler AI?
It depends on your use case. Compare category fit, pricing, feature availability, and ratings before choosing.
Which tool has a free plan?
Lunary and Fiddler AI may not offer a free plan based on current Toolglade data.