Fiddler AI vs Middleware

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

Middleware

See full pricing history

USD · US · source: middleware.io

Plan	Pricing	Charged by	Offer type
Pay As You Go	USD 0.3 monthly $0.30 per GB of metrics, logs and traces	Usage · per GB; additional usage meters published	Standalone · Starting at
BYOC	Contact sales Custom pricing	Flat · published offer	Standalone · Contact sales

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

Middleware

Pay As You Go

Plan card RUM sessions: $1 per 1,000

Limited
Plan card Synthetic checks: $1 per 5,000

Limited
Plan card Retention: 30 days

Limited

BYOC

Plan card Bring your own cloud: 0

Limited
Plan card Custom retention: 1

Limited
Plan card Support: 24x7

Limited

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

Middleware

August 27, 2026 Source
- Pay As You Go: USD 0.3 monthly
- BYOC: Contact sales