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Fiddler

Cybersecurity & Identity Management fiddler.ai

Fiddler offers monitoring solutions for AI models, ensuring transparency, performance tracking, and bias detection throughout the model lifecycle.

Entry price

Free

Free plan available

Plans tracked

no add-ons

Pricing changes

Latest Wk 27 '26

Pricing model

Usage-based

Free tier available

Pricing Change History

7 changes

20264 changes

Wk 27 '26

Improvement

Fiddler tightens free-tier guardrail latency to under 80ms

Free plan guardrail latency specification improved from <100ms to <80ms, indicating faster real-time policy enforcement for the free tier.

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Q2 '26

Improvement

Fiddler: Free plan guardrails latency improved <100ms → <80ms, models renamed to Centor

Free plan guardrails latency claim improved from <100ms to <80ms; underlying model line renamed from 'Fiddler Trust Models' to 'Fiddler Centor Models' (also renamed site-wide from 'Fiddler Trust Service').

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Q1 '26

Packaging

Fiddler launches usage-based pricing at $0.002 per trace

Pricing completely overhauled: Free Guardrails/Lite/Business/Premium replaced by Free/Developer/Enterprise. Developer plan introduces usage-based pricing at $0.002/trace — first public price on the page.

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Wk 5 '26

Packaging

Fiddler launches Developer plan at $0.002/trace, cuts tiers from 4 to 3

Developer plan launched with transparent usage-based pricing at $0.002 per trace. No public pricing existed for any plan before this change. Pricing restructured from 4 tiers (Free Guardrails, Lite, Business, Premium) to 3 tiers (Free, Developer, Enterprise). Lite and Business plans removed; Developer plan added at $0.002/trace; Free Guardrails renamed to Free; Premium renamed to Enterprise.

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20252 changes

Q3 '25

Packaging

Fiddler Introduces Free Guardrails Plan for Real-Time Moderation in GenAI Applications with Enhanced Trust Models

Free Guardrails plan introduced - real-time moderation for GenAI applications with contextual Fiddler Trust Models, protecting against hallucinations, toxicity, PII, prompt injection, and jailbreak attempts while maintaining <100ms latency

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Q1 '25

Packaging

Fiddler Introduces Free Trial for Guardrails with New Promotional Banner

Fiddler Guardrails introduced with free trial offering - new promotional banner added: 'Try Fiddler Guardrails for free'

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20241 change

Q3 '24

Improvement

Fiddler Removes Key Features from Premium Plan, Including GPU Acceleration and Ongoing Co-Pilot Services

Business plan description changed from 'advanced explanations and transparency' to 'advanced ML and LLM monitoring' Premium plan: Removed 'GPU accelerated explanations' feature

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