Exceptionless vs Fiddler AI

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.

Exceptionless

See full pricing history

USD · US · source: exceptionless.com

Plan	Pricing	Charged by	Offer type
Free	Free $0/month	Flat · per month	Standalone · Free
Small	USD 15 monthly $15/month	Flat · per month	Standalone · Fixed
Medium Highlighted	USD 49 monthly $49/month	Flat · per month	Standalone · Fixed
Large	USD 99 monthly $99/month	Flat · per month	Standalone · Fixed
Extra Large	USD 199 monthly $199/month	Flat · per month	Standalone · Fixed
Enterprise	USD 499 monthly $499/month	Flat · per month	Standalone · Fixed

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

What each plan includes

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

Exceptionless

Free

Plan card Projects: 1

Included
Plan card Events: 3,000/month

Included
Plan card Retention: 3 days

Included

Small

Plan card Projects: 5

Included
Plan card Events: 15,000/month

Included
Plan card Retention: 30 days

Included

Medium

Plan card Projects: 15

Included
Plan card Events: 75,000/month

Included
Plan card Retention: 90 days

Included

Large

Plan card Unlimited projects and users: Included
Plan card Events: 250,000/month

Included
Plan card Retention: 180 days

Included

Extra Large

Plan card Unlimited projects and users: Included
Plan card Events: 1 million/month

Included
Plan card Retention: 180 days

Included

Enterprise

Plan card Unlimited projects and users: Included
Plan card Events: 3 million/month

Included
Plan card Retention: 180 days

Included

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

How their prices changed

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

Exceptionless

August 27, 2026 Source
- Free: Free
- Small: USD 15 monthly
- Medium: USD 49 monthly
- Large: USD 99 monthly
- Extra Large: USD 199 monthly
- Enterprise: USD 499 monthly

Fiddler AI

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