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Fiddler AI vs PromptLayer

Fiddler AI logo
Fiddler AIAI Observability
PromptLayer logo
PromptLayerPrompt Engineering Tools
From $50 / seat / moPublished price
Fiddler AI logo
Fiddler AI
AI Observability

See Every Action. Understand Every Decision. Control Every Outcome.

PromptLayer logo
PromptLayer
Prompt Engineering Tools

Prompt engineering, evals, and observability for production AI.

Overview
CategoryAI ObservabilityPrompt Engineering Tools
What it isAI observability platform for monitoring, explaining, and analyzing ML model predictions in production.PromptLayer is a platform for prompt management, AI observability, evaluation workflows, and release control across LLM apps and agent systems.
Pricing
Published priceFiddler AI does not publish a current, citable numeric self-serve price. Pricing is provided through sales based on deployment scope and requirements.From $50 / seat / mo
Free tier ($0) with up to ~5,000 requests and 7-day log retention. Pro is $50/user/mo with unlimited log retention and advanced features. Enterprise is custom-quoted, adding SSO/R…
Pricing modelTiered plansTiered plans
Free optionsFree plan · No free trialFree plan · No free trial
Deal on CubbieNone right nowNone right now
Company
Founded20182021
Team size51-200 employeesNot available
HeadquartersPalo Alto, CANew York City, NY

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