Fiddler AI
Observability & Evals · Free + paid
ML model performance management
At a glance
- Made by
- Fiddler AI
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- Web, API
What is Fiddler AI?
Fiddler is an AI control plane that manages in-house and external agents from creation through operation. It provides continuous evaluation, monitoring, policy enforcement, and auditable governance so enterprises can scale AI with confidence. Its own Fiddler Centor models run guardrails and evaluations inside your environment with low latency and low cost, without calling external LLM APIs. It observes traditional ML models, LLM applications, and multi-agent systems together, and can be deployed on SaaS, VPC, and AWS GovCloud.
- Agentic Observability
- Continuous Evaluations from testing through production
- Real-time guardrails under 80ms (hallucination, toxicity, PII/PHI, prompt injection, jailbreak)
- Detect and mask PII, PHI, and secrets in request and response paths
- Auditable AI governance, risk, and compliance
- Traditional ML model observability
- Fiddler Centor models for evaluation and guardrails
- 100+ built-in metrics and custom metrics
Who uses Fiddler AI and for what
- Running agents in regulated industries such as finance, healthcare, insurance, and government
- Managing accuracy, safety, and compliance of agents and predictive models
- Policy enforcement for coding agent requests
Pricing
What you get for free — Yes (Free: real-time guardrails, demo request required)
| Plan | Price | Main limits |
|---|---|---|
| Free | 0 | Real-time guardrails (blocking hallucination, toxicity, PII/PHI, injection, jailbreak) |
| Developer | $0.002 | $0.002 per trace, unified observability and experiments, custom evaluators, RBAC and SSO, SaaS |
| Enterprise | Contact sales | Contact sales, SaaS, VPC, and on-premises deployment, dedicated support |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Fiddler AI (alternatives)
Fiddler AI vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Fiddler AI | Free + paid | 0 | 3 | Yes | — | No |
| Arize AI | Free + paid | 0 | 3 | Yes | $50/mo | No |
| Evidently | Free + paid | 0 | 3 | Yes | — | No |
3 of these 3 tools have a free plan. Cheapest paid plan: Arize AI ($50/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Fiddler AI on AI Galaxy Map
- One of 27 AI tools in the Observability & Evals field.
- Connected to 3 other tools — #20 in its field.
Frequently asked questions
Can I use Fiddler AI for free?
Yes (Free: real-time guardrails, demo request required). Prices can change, so check the official site before paying.
What AI can I use instead of Fiddler AI?
Tools that do the same job, such as Arize AI, Evidently, WhyLabs, are connected to it on the map.
Can I use Fiddler AI in Korean?
None (English and a few others only)
Sources (official pages)
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.