Fiddler AI vs Papertrail

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Fiddler AI

See full pricing history

USD · US · source: www.fiddler.ai

Plan	Pricing	Charged by	Offer type
Free — Free	Free Free	Flat	Standalone · Free
Developer — Developer Highlighted	$0.002 per trace $0.002 per trace	Usage · per trace	Standalone · Usage based

Papertrail

See full pricing history

USD · US · source: www.papertrail.com

Plan	Pricing	Charged by	Offer type
Log Observability	USD 5 monthly Aggregate all your logs, your own way. Log Observability Starts at: $5.00 Per GB per month* Scalable, full stack, multi-source log management Free Trial Intuitive Web-based log viewer Team-wide groups & searches Unlimited systems & users Encrypted logging Long	Usage · per GB per month	Standalone · Starting at

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Fiddler AI

Free — Free

Highlights Real-time guardrails to detect harmful exposure: Included
Highlights Protects against hallucinations, Toxicity, PII/PHI, Prompt Injection, and Jailbreak attempts: Included
Highlights Latency of <80ms: Included
Highlights Powered by contextual and task specific Fiddler Centor Models: Included

Developer — Developer

Highlights Everything in Free, plus: Included
Highlights Unified AI observability, including tests and experiments, for agentic and predictive systems: Included
Highlights Custom evaluators and bring your own judge: Included
Highlights Visualization-driven insights: Included
Highlights Role based access control and SSO: Included
Highlights SaaS deployment: Included

Papertrail

Log Observability

Plan card Intuitive Web-based log viewer: Included
Plan card Team-wide groups & searches: Included
Plan card Unlimited systems & users: Included
Plan card Encrypted logging: Included
Plan card Long-term archive: Included
Plan card REST API: Included
Plan card Search alerts: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Fiddler AI

August 27, 2026 Source
- Free — Free: Free
- Developer — Developer: $0.002 per trace

Papertrail

August 27, 2026 Source
- Log Observability: USD 5 monthly