Athina AI vs Fiddler AI (2026)
vs
Overview
Rating
10.0 / 10
Rating
10.0 / 10
Best For
—
Best For
Enterprises in regulated industries (financial services, healthcare, insurance, government) running AI agents and predictive ML models
Product Summary
Athina AI is a monitoring and evaluation platform for production LLM applications.
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.
Starting Price
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Starting Price
0
Free Trial
No
Free Trial
No
Free Version
No
Free Version
Yes
Website
Website
Key features
Core capabilities each platform advertises.
Data not available
- 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
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Comprehensive platform covering entire AI development lifecycle from prototyping to production
- 50+ preset evaluations from established providers like Ragas and Guardrails
- Strong enterprise features including SOC-2 Type 2 compliance and self-hosted deployment
- Y Combinator-backed with proven clients like Perplexity and Meesho
- Generous free starter plan with 10k logs/month and unlimited prompts
Cons
- Small team of 11 employees may limit support capacity for enterprise clients
- Lack of transparent pricing for Pro and Enterprise plans requiring sales contact
- Founded in 2022, relatively new compared to more established observability platforms
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
Athina AI or Fiddler AI — which should you choose?
Choose Athina AI if you wantChoose if you want
Data not available
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
Compare Athina AI and Fiddler AI 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