Fiddler AI vs Galileo
A side-by-side comparison of Fiddler AI and Galileo, two Observability tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
Fiddler AI
ObservabilityAI observability and security platform for LLM apps, agents, and ML models.
View Fiddler AIGalileo
ObservabilityEvaluation and observability for GenAI apps and agents, with inline guardrails.
View GalileoAt a glance
| Attribute | Fiddler AI | Galileo |
|---|---|---|
| Category | Observability | Observability |
| Pricing (differs) | PAID | FREEMIUM |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Platforms | Web, API | Web, API |
| Model support | Model-agnostic | Model-agnostic |
| Vendor (differs) | Fiddler AI | Galileo |
The honest brief
Fiddler AI
Extends a pre-LLM explainable-AI and ML-monitoring platform (founded 2018) to LLM/agent observability and guardrails.
- Covers classic ML and LLM monitoring
- Trust Service scores hallucination, PII, toxicity
- Low-latency guardrails + alerting
- Strong explainability heritage
- Enterprise, sales-quoted pricing
- Heavier to adopt than dev-first tools
- Overkill for small LLM apps
Galileo
Turns offline evals into real-time production guardrails powered by its own cheap Luna eval models, not an LLM judge.
- 20+ out-of-the-box evals for RAG and agents
- Inline runtime guardrails, not just offline scoring
- Own Luna models keep eval costs low
- Model-agnostic across providers
- Pricing tiers gate the production guardrails
- Proprietary eval models, not open source
- Heavier setup than a drop-in proxy