Fiddler AI vs Logz.io

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

Logz.io

See full pricing history

USD · US · source: logz.io

Plan	Pricing	Charged by	Offer type
Log Management	USD 0.92 monthly $0.92 per ingested GB, per day	Usage · per ingested GB per day	Standalone · Fixed
Infrastructure Monitoring	USD 0.4 monthly $0.40 per 1,000 time-series metrics, per day	Usage · per 1,000 time-series metrics per day	Standalone · Fixed
Distributed Tracing	USD 0.16 monthly $0.16 per 1 million spans, per day	Usage · per 1 million spans per day	Standalone · Fixed
Agentic Observability	USD 10 monthly $10 per 1M tokens or AI-agent workflow/invocation	Usage · per 1 million tokens or agent workflow	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

Logz.io

Log Management

Plan card Retention: 3, 7, 14 or 30 days

Limited
Plan card Usage pricing: 1

Limited

Infrastructure Monitoring

Plan card Retention: 18 months

Limited
Plan card Metric density: 6 DPM per series

Limited

Distributed Tracing

Plan card Retention: 10 days

Limited
Plan card Distributed tracing: 1

Limited

Agentic Observability

Plan card AI-agent workflows: 0

Limited
Plan card Token-based consumption: 1

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

Logz.io

August 27, 2026 Source
- Log Management: USD 0.92 monthly
- Infrastructure Monitoring: USD 0.4 monthly
- Distributed Tracing: USD 0.16 monthly
- Agentic Observability: USD 10 monthly