Fiddler AI vs Montastic

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

Montastic

See full pricing history

USD · US · source: montastic.com

Plan	Pricing	Charged by	Offer type
Business	USD 10 monthly Popular Business $10/mo 50 checkpoints 1 min check frequency Response time: 5 notify seats 1 login seats SMS: 50/mo 3 webhooks 1 status pages 250 subscribers Sign up	Flat · per month	Standalone · Fixed
Enterprise Plus	USD 29 monthly Enterprise Plus $29/mo 200 checkpoints 1 min check frequency Response time: 15 notify seats 15 login seats SMS: 300/mo 10 webhooks 3 status pages 5000 subscribers Sign up	Flat · per month	Standalone · Fixed

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

Montastic

Business

Plan card 50 checkpoints: Included
Plan card 1 min check frequency: Included
Plan card Response time:: Included
Plan card 5 notify seats: Included
Plan card 1 login seats: Included
Plan card SMS: 50/mo: Included
Plan card 3 webhooks: Included
Plan card 1 status pages: Included
Plan card 250 subscribers: Included

Enterprise Plus

Plan card 200 checkpoints: Included
Plan card 1 min check frequency: Included
Plan card Response time:: Included
Plan card 15 notify seats: Included
Plan card 15 login seats: Included
Plan card SMS: 300/mo: Included
Plan card 10 webhooks: Included
Plan card 3 status pages: Included
Plan card 5000 subscribers: 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

Montastic

August 27, 2026 Source
- Business: USD 10 monthly
- Enterprise Plus: USD 29 monthly