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Tools/Fiddler AI vs Phoenix
Fiddler AI

Fiddler AI

observability
vs
Phoenix

Phoenix

observability

Fiddler AI vs Phoenix — Comparison

Overview
What each tool does and who it's for

Fiddler AI

The Fiddler AI Control Plane provides enterprises with visibility, context, and control across the agentic lifecycle with observability, guardrails, a

Trust is a fundamental part of humanity, but with the evolution of AI this decade, we are giving AI the agency to make autonomous decisions that affect people's lives and livelihoods, often without visibility into their reasoning, context for their actions, or control over their behavior. We experienced the early version of this pain firsthand with machine learning models and founded Fiddler to solve it: first with explainability, then expanded to observability to track how models change over time. As agents emerged, the same challenge resurfaced at a larger scale: autonomous systems making consequential decisions across enterprises. Organizations needed not just visibility, but control, a way to govern AI systems at scale. When governance becomes necessary, a Control Plane always emerges to enable organizations to deploy high-performing, compliant, and secure AI systems at scale. Today, Fiddler is the Control Plane for AI Agents. We believe in the promise of AI to benefit and elevate our lives in every way. We are acutely aware of the challenges when AI is deployed without proper oversight and guardrails. Fiddler was founded to bring trust, transparency, and accountability to AI everywhere. As AI systems gain autonomy and make consequential decisions at scale, responsible AI requires more than good intentions: it requires governance. Our Control Plane enables organizations to operationalize responsible AI through continuous monitoring, enforceable policies, and auditable accountability. Our approach is grounded in these principles: Our team of engineers, data scientists, product managers, and sales and marketing experts bring a wide set of skills and experiences from companies like Meta, Google, Lyft, X, Microsoft, and other well-known large companies and high growth startups. Backed by top-tier investors and trusted by Fortune 500 companies worldwide, we're recognized as one of the leading startups shaping the future of enterprise AI. Our culture is built on the values of humility, respect, kindness, transparency, and collaboration. Fiddlers are driven by the mission of the company and work hard to make a difference towards the cause.

Phoenix

Arize Phoenix is an open-source LLM tracing & evaluation platform. Seamlessly instrument, experiment, and optimize AI applications in real time—tr

I notice the social mentions you've provided don't appear to contain reviews or mentions of a software tool called "Phoenix." Instead, they seem to discuss Phoenix, Arizona in the context of climate change and water issues, plus what appears to be a GitHub repository report. Without actual user reviews or social mentions specifically about Phoenix as a software tool, I cannot provide a meaningful summary of user opinions about its strengths, complaints, pricing, or reputation. Could you please provide reviews and mentions that are specifically about the Phoenix software tool you'd like me to analyze?

Key Metrics
—
Avg Rating
—
0
Mentions (30d)
1
—
GitHub Stars
9,053
—
GitHub Forks
775
—
npm Downloads/wk
—
—
PyPI Downloads/mo
—
Community Sentiment
How developers feel about each tool based on mentions and reviews

Fiddler AI

0% positive100% neutral0% negative

Phoenix

0% positive100% neutral0% negative
Pricing

Fiddler AI

tieredFree tier

Pricing found: $30, $1, $0.002

Phoenix

subscription + tiered

Pricing found: $50, $10, $3

Features

Only in Fiddler AI (10)

Evaluate and monitor agents and predictive applications throughout their lifecycle.Analyze and understand agent behavior, model performance, and associated risks.Protect and enforce AI applications with guardrails that prevent costly incidents in real-time.Gain enterprise-wide visibility into AI applications and meet compliance requirements.Evaluate agents and models in development with curated test datasets and stress tests.Run experiments to compare prompts, models, parameters, and guardrail settings.Test for hallucinations, drift, and policy violations before launch.Customize Fiddler evaluators for domain-specific use cases.Integrate external judges from OpenAI, Anthropic, and other providers for advanced reasoning.Support for structured and unstructured data.

Only in Phoenix (10)

Top AI Teams Use PhoenixFlexible, Transparent, & Free from Lock-InIterate on your LLM workflow and deploy to production with confidenceTraceEvaluateIterateReady to get started?PhoenixEvaluationsIntegrations
Developer Ecosystem
—
GitHub Repos
54
—
GitHub Followers
442
—
npm Packages
20
—
HuggingFace Models
6
—
SO Reputation
—
Pain Points
Top complaints from reviews and social mentions

Fiddler AI

No data yet

Phoenix

token usage (1)
Product Screenshots

Fiddler AI

Fiddler AI screenshot 1Fiddler AI screenshot 2Fiddler AI screenshot 3Fiddler AI screenshot 4

Phoenix

Phoenix screenshot 1
Company Intel
information technology & services
Industry
information technology & services
110
Employees
130
$112.7M
Funding
$131.0M
Series C
Stage
Series C
Supported Languages & Categories

Fiddler AI

AI/MLFinTechSecurityDeveloper Tools

Phoenix

AI/MLDevOpsDeveloper Tools
View Fiddler AI Profile View Phoenix Profile