Arize AI vs Decagon

Arize AI — Infrastructure · Private · 1 of 1 figure sourced  |  Decagon — Application · Private · $4.5B valuation · 4 of 4 figures sourced

Relationship

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

Aligned comparison

FieldArize AIDecagon
Sizenot disclosed$4.5B valuation
Employees—300
Founded20202023 3 yrs later
StatusPrivatePrivate match
CategoryInfrastructureApplication
Stack layerAI agent, Developer tool, Infrastructure service, PlatformAI agent, Agent platform, Application
HeadquartersBerkeley, USASan Francisco, USA

Capability overlap

Shared · 3

Agent orchestrationData analysisEvaluation and observability

Not verified for Arize AI · 4

Customer supportEmail assistanceSummarizationVoice agent

Recorded for Decagon. Arize AI’s product records say nothing either way — a missing record is not a missing capability.

Arize AI has no capability Decagon lacks, among the 3 recorded here.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

Arize AI

AI agent

AlyxAI agent

AI engineering agent built into Arize AX that reads a project's traces, prompts, datasets and evals and acts on them — investigating issues, improving prompts and running evaluations from a full-page or side-chat surface whose context carries across pages.

Decagon

AI agent

DecagonAI agent

Builds and runs customer-support agents that resolve enquiries over chat, email and voice.

Decagon ChatAI agent

Decagon's chat channel — an AI agent that handles live customer conversations in a web or in-app chat surface.

Decagon EmailAI agent

Decagon's email channel — agents that read and answer customer email threads rather than routing them to a queue.

Decagon VoiceAI agent

Decagon's voice channel — an AI agent that answers customer phone calls in place of a hold queue.

No counterpart

Arize AI sells these in a stack layer with no product recorded for Decagon yet — nothing on the other side to compare them against.

Developer tool

Arize PhoenixDeveloper tool

Open-source platform for tracing, evaluating and experimenting with LLM and agent applications, run locally, via Docker/Kubernetes, or as free Phoenix Cloud instances.

Platform

Arize AXPlatform

AI observability platform that traces, evaluates and monitors machine-learning and LLM applications in production, surfacing issues and root causes.

Infrastructure service

Arize Database (adb)Infrastructure service

An AI-native datastore (built on Apache Iceberg) that unifies observability and evaluation data in open formats for zero-copy access across the AI/data stack.

Decagon sells these in a stack layer with no product recorded for Arize AI yet — nothing on the other side to compare them against.

Application

ExperimentsApplication

A/B-testing suite for AI support agents: structured experiments (tone, logic, flows) against live traffic with control groups, statistical-significance testing and gradual rollout.

Insights & ReportingApplication

Dashboards and natural-language querying ('Ask AI') over support data: CSAT/deflection performance tracking, heatmaps, customer-journey visualization and knowledge-base performance.

SuggestionsApplication

Analyzes support conversations to detect gaps in a company's help center and auto-generates draft articles, ranked by impact, with monthly updates.

Testing & QAApplication

Integrated testing suite (internally called 'Simulations') that validates AI-agent behavior across channels before production deployment.

WatchtowerApplication

Always-on monitoring and QA for AI and human agent interactions against custom quality criteria.

Agent platform

Agent Operating ProceduresAgent platform

Decagon's authoring layer for the rules an AI support agent follows, so non-engineering teams can build, iterate on and scale agents.

DuetAgent platform

An AI partner built into Decagon that helps teams build and improve support agents — distilling best practices from hundreds of Decagon deployments into guidance for the builder, and auto-tuning the agent via "Duet Autopilot," which improves it with every conversation it handles.