Inferse
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your platform
Vendor dashboard

Fiddler AI

Input—per 1M tokens
Output—per 1M tokens
Context—tokens
WeightsClosed

About

Fiddler AI is ranked #25 of 30 in AI agent observability tools on Inferse. It runs on Web.

Compared on AI agent observability tools

Free plan
Yesfiddler.ai
Cost tracking
Yesfiddler.ai

Company

Founded
2018fiddler.ai · 28 Sept 2026
Headquarters
Palo Alto, California, United Statesfiddler.ai · 28 Sept 2026

Best Fiddler AI alternatives

See all 12
9.0 Opik $19/mo first paid tier Free plan 8.9 Langfuse $29/mo first paid tier Free plan 8.5 Arize AX $50/mo first paid tier Free plan 8.5 W&B Weave $60/mo first paid tier Free plan 8.3 OpenLIT Free free plan, no paid price published Free plan 8.2 Traceloop Free free plan, no paid price published Free plan

Where it ranks on Inferse

Sources