Fiddler AI
| Category | Agent audit & observability |
|---|---|
| Official site | www.fiddler.ai/ |
| Maker | Fiddler AI |
| Ownership / acquisition | CrowdStrike (definitive agreement announced Nov 3, 2026; not yet closed) · source |
| License model | Commercial |
| License | Not published / not yet verified |
| Public pricing | Free; Developer $0.002/trace; Enterprise by quote |
| Source code | Not published / not yet verified |
| Last verified |
Facts are taken from the vendor's own site, GitHub, or a linked public source. Blank means we could not confirm it, not that it does not exist. Vendors can request a correction for free.
Lab result
Not yet tested. Lab testing is in preparation. No tool on the site has a lab result yet.
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Frequently asked questions
What is Fiddler AI?
Fiddler AI is a commercial agent audit and observability tool from Fiddler AI. Ownership: CrowdStrike (definitive agreement announced Nov 3, 2026; not yet closed). AI control plane for enterprise agents from Fiddler AI: agentic observability across prompts, tool calls and handoffs (OpenTelemetry), pre-deployment evaluation, and inline Fiddler Guardrails that enforce safety, security and privacy policies in under 80ms using in-environment Fiddler Centor Models, covering prompt injection, jailbreaks, PII/PHI, toxicity and faithfulness. Free plan includes real-time guardrails; Developer is $0.002 per trace with unified observability; Enterprise adds SaaS, VPC or on-premises deployment. CrowdStrike announced a definitive agreement to acquire Fiddler on Nov 3, 2026, expected to close in its fiscal Q4 FY27 and to sell the technology as Falcon Observe; the deal had not closed when this listing was updated.
Is Fiddler AI open source?
No. We list Fiddler AI as a commercial product, and no public source repository is recorded for it.
How much does Fiddler AI cost?
Published pricing: Free; Developer $0.002/trace; Enterprise by quote. Checked on November 5, 2026; confirm current prices on the official site.
Who makes Fiddler AI?
Fiddler AI. Ownership: CrowdStrike (definitive agreement announced Nov 3, 2026; not yet closed).
What are alternatives to Fiddler AI?
Other agent audit and observability tools listed here include Langfuse, Arize Phoenix, LangSmith, Helicone and W&B Weave. See all 13 in Agent audit & observability.