Fiddler AI vs Traceloop (2026)
vs
Overview
Rating
10.0 / 10
Rating
10.0 / 10
Best For
Enterprises in regulated industries (financial services, healthcare, insurance, government) running AI agents and predictive ML models
Best For
Teams already using Datadog/Splunk wanting LLM observability
Product Summary
Fiddler AI is an enterprise platform for observing, evaluating, and governing AI agents and ML models, with guardrails that run in your own environment.
Product Summary
The OpenTelemetry standard for AI. Pipes LLM telemetry into Datadog, Splunk, or any OTel backend.
Starting Price
0
Starting Price
open-source
Free Trial
No
Free Trial
No
Free Version
Yes
Free Version
No
Website
Website
Key features
Core capabilities each platform advertises.
- Agentic observability across multi-step agent workflows
- Continuous evaluations from testing through production
- Inline guardrails for PII, PHI, prompt injection, and jailbreaks
- AI governance, risk, and compliance reporting
- OpenTelemetry
- OpenLLMetry
- Vendor-neutral
- OTel integration
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Covers AI agents and predictive ML models in one platform
- Evaluations and guardrails run in-environment, with no external LLM API call per check
- Free tier includes real-time guardrails
- Supports SaaS, VPC, on-premises, and AWS GovCloud deployment
Cons
- The free tier covers guardrails only; observability starts on the paid Developer plan
- VPC and on-premises deployment require the Enterprise plan
- Every plan on the pricing page starts with a demo request rather than self-serve signup
- No model routing or provider failover, so a gateway is a separate tool
Pros
- Acquired by ServiceNow for $60-80M providing strong financial backing and integration opportunities
- Built on OpenTelemetry standards with open-source OpenLLMetry SDK
- Recognized as Gartner Cool Vendor demonstrating industry validation
- One-line code integration for quick setup and deployment
- Enterprise-ready with SOC 2, HIPAA compliance and multiple deployment options
Cons
- ServiceNow acquisition may lead to platform changes, pricing adjustments, or strategic shifts
- Small team of 9 employees may be absorbed into larger ServiceNow organization affecting support
- Limited transparent pricing information following acquisition
- Uncertainty around long-term product roadmap under new ownership
Fiddler AI or Traceloop — which should you choose?
Choose Fiddler AI if you wantChoose if you want
- Governing AI agents in regulated industries
- Monitoring predictive ML models for drift and performance
- Redacting PII and PHI on agent requests and responses
Choose Traceloop if you wantChoose if you want
Data not available
Compare Fiddler AI and Traceloop on your own traffic
10KFree traces/mo
1,000+Models
5 minSetup
Respan lets you trace LLM and agent calls across any model or framework, A/B test prompts on production traffic, and route requests across 1,000+ models through one gateway.
Try Respan free