aid: phoenix
name: Arize Phoenix
description: >
  Arize Phoenix is an open-source AI observability and evaluation platform built
  on OpenTelemetry, enabling developers to trace, evaluate, and debug LLM
  applications in production or locally. Phoenix exposes a REST API for
  programmatically ingesting spans and traces, managing datasets, running
  experiments, submitting annotations, and querying evaluation results. The
  platform supports a wide range of LLM frameworks including LangChain,
  LlamaIndex, OpenAI, Anthropic, and CrewAI through auto-instrumentation. Phoenix
  can be self-hosted in a single command or used as a managed cloud service (Arize
  AX), with authentication via API keys and OAuth2/OIDC for enterprise
  deployments.
type: Index
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
url: https://raw.githubusercontent.com/api-evangelist/phoenix/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.19'
tags:
  - LLM Observability
  - AI Evaluation
  - OpenTelemetry
  - Tracing
  - LLMOps
  - AI Monitoring
  - Open Source
  - Prompt Engineering
  - Datasets
  - Experiments
apis:
  - name: Arize Phoenix REST API
    description: >
      The Phoenix REST API provides programmatic access to all platform
      capabilities including trace ingestion via OpenTelemetry, span and trace
      annotation management, dataset upload and export, experiment creation and
      execution, annotation configuration, and project management. The API
      follows REST conventions with JSON request and response bodies and uses
      bearer token authentication via API keys.
    image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
    humanURL: https://arize.com/docs/phoenix
    baseURL: https://app.phoenix.arize.com
    tags:
      - LLM Observability
      - Tracing
      - Evaluation
      - Datasets
      - Experiments
    properties:
      - type: Documentation
        url: https://arize.com/docs/phoenix
      - type: OpenAPI
        url: https://raw.githubusercontent.com/Arize-ai/phoenix/main/schemas/openapi.json
      - type: OpenAPI
        url: openapi/phoenix-rest-api-openapi.yml
      - type: JSONSchema
        url: json-schema/phoenix-span.json
      - type: JSONSchema
        url: json-schema/phoenix-dataset.json
      - type: JSONSchema
        url: json-schema/phoenix-experiment.json
      - type: JSONSchema
        url: json-schema/phoenix-annotationresult.json
      - type: JSONSchema
        url: json-schema/phoenix-project.json
      - type: Vocabulary
        url: vocabulary/phoenix-vocabulary.yml
      - type: JSONLDContext
        url: json-ld/phoenix-context.jsonld
      - type: PythonSDK
        url: https://pypi.org/project/arize-phoenix-client/
      - type: TypeScriptSDK
        url: https://www.npmjs.com/package/@arizeai/phoenix-client
    contact:
      - FN: Arize AI Support
        url: https://arize.com/contact/
common:
  - type: Website
    url: https://arize.com/phoenix/
  - type: Documentation
    url: https://arize.com/docs/phoenix
  - type: GitHubOrg
    url: https://github.com/Arize-ai
  - type: LinkedIn
    url: https://www.linkedin.com/company/arizeai
  - type: Blog
    url: https://arize.com/blog/
  - type: Pricing
    url: https://arize.com/pricing/
  - type: X
    url: https://twitter.com/arizeai
  - type: Plans
    url: plans/phoenix-plans-pricing.yml
  - type: RateLimits
    url: rate-limits/phoenix-rate-limits.yml
  - type: FinOps
    url: finops/phoenix-finops.yml
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com