Fiddler AI
Model monitoring and explainability platform for compliance
Fiddler provides AI model monitoring with explainability and fairness features. The platform helps organisations understand model behaviour, detect bias, and maintain compliance documentation for audit purposes.
| Pricing from | Custom |
| Best for | Data science teams and enterprises prioritising model transparency and fairness compliance |
| Website | www.fiddler.ai/ |
Company facts
| Social profiles | LinkedIn, X, YouTube, GitHub |
Facilities and features
- Published pricing
- Free plan
- API
What stands out
Fiddler AI reduces evaluation costs by running models in your environment.
“Fiddler Centor Models power guardrails and evaluations in-environment, with no external LLM API calls, reducing the evaluation TCO by up to 98% compared to foundation models.”Fiddler AI, own website
Fiddler AI enforces policy inline with low latency.
“Second, Fiddler Guardrails enforce policy inline, at the agent s request and response path, in under 80ms,”Fiddler AI, own website
Strengths and trade-offs
- Excellent explainability features making it easy to document AI decisions for auditors
- Flexible monitoring across diverse ML frameworks and deployment environments
- Smaller sales and support team compared to established enterprise vendors
- Requires technical expertise to configure monitoring thresholds and fairness metrics
Appears in
Self-hosted LLM observability tools
1
LangFuse92.02
Morph92.03
Manifest90.0RANKINGfull ranking →AIVERIFIEDBest AI governance platforms
1
Dynamiq94.02
Cake92.03
Grengin92.0RANKINGfull ranking →AIVERIFIEDBest LLM evaluation tools
1
Giskard96.02
Arize AI88.03Fiddler AI88.0RANKINGfull ranking →AIVERIFIEDBest LLM observability tools
1LangFuse92.02
AgentOps88.03Arize AI88.0RANKINGfull ranking →AI TOOLSTop 10 AI Compliance & Audit Tools
1
IBM Watson OpenScale95.02
Protiviti AI Governance92.73
Deloitte AI Audit Services90.3RANKINGfull ranking →How Fiddler AI ranks
#5 in Best AI governance platforms
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 12.
“Everest Group, Innovation Watch: AI Governance Platforms, 2026”Fiddler AI, own website
#3 in Best LLM evaluation tools
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 12.
“Continuous evaluation, reliable monitoring, enforceable policy, and auditable governance give enterprises the centralized controls and actionable insights to scale AI with trust.”Fiddler AI, own website
#4 in Best LLM observability tools
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 12.
“Gartner, Market Guide for AI Evaluation and Observability Platforms, February 2026”Fiddler AI, own website
#6 in Self-hosted LLM observability tools
How the score is made up: Evidence on its own site 20; How complete its published information is 16; Fit to this ranking's criteria 40; Buying information on its own site 12.
“ML Observability Deliver high performing AI solutions at scale”Fiddler AI, own website
“Yes. Fiddler deploys in any secure cloud environment or VPC.”Fiddler AI, own website
Alternatives to Fiddler AI
| Giskard Get your AI audited. Agentic AI risks: Handled. | #1 in Best LLM evaluation tools | 96.0 |
| Arize AI ML observability and fairness monitoring platform | #2 in Best LLM evaluation tools | 88.0 |
 PromptfooProactively identify and fix vulnerabilities in your AI applications | #4 in Best LLM evaluation tools | 88.0 |
 AthinaShip AI to prod 10x faster | #5 in Best LLM evaluation tools | 86.0 |
 Kiln AIThe AI workbench for teams | #6 in Best LLM evaluation tools | 82.0 |
 MLflow AI PlatformDeliver high-quality AI, fast | #7 in Best LLM evaluation tools | 82.0 |
Questions about Fiddler AI
How much does Fiddler AI cost?
Lister lists Fiddler AI's pricing as: Custom.
Who is Fiddler AI best for?
Fiddler AI is best for data science teams and enterprises prioritising model transparency and fairness compliance.
Where does Fiddler AI rank?
Fiddler AI is ranked #3 in Best LLM evaluation tools (Lister Score 88.0), #4 in Best LLM observability tools (Lister Score 88.0), #4 in Top 10 AI Compliance & Audit Tools (Lister Score 88.0), #5 in Best AI governance platforms (Lister Score 88.0) and #6 in Self-hosted LLM observability tools (Lister Score 88.0).
What are the best alternatives to Fiddler AI?
The closest alternatives on Lister are Giskard (#1 in Best LLM evaluation tools), Arize AI (#2 in Best LLM evaluation tools) and Promptfoo (#4 in Best LLM evaluation tools).
Is this your company?
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