generated: '2026-08-09'
method: probed
source: live HTTP + DNS probe of every Chai Research / Chaiverse host
summary: >-
  Chai Research published a public developer surface and has since withdrawn it without any
  published deprecation notice, sunset date, or migration path. The Chat API documentation
  host no longer resolves in DNS, the documented API route returns a bodyless 404 from the
  load balancer, the Chaiverse Python client has been removed from PyPI, and the Chaiverse
  GitHub repository is gone. The developer platform itself is still marketed at
  chaiverse.com, but its console gates every path behind a login. There is no status page
  and no deprecation policy.
versioning:
  scheme: uri-path
  observed: v1
  docs: null
  note: The retired Chat API used a /v1/ path prefix. No versioning policy was found on any
    live Chai Research property.
deprecation:
  policy_url: null
  sunset_header: false
  note: >-
    No deprecation policy, no RFC 8594 Sunset/Deprecation header support, and no public
    notice of the Chat API's withdrawal was found. The surface simply stopped answering.
sla:
  url: null
status_page: null
status_page_probes:
- url: https://status.chai-research.com/
  result: DNS does not resolve
- url: https://status.chaiverse.com/
  result: DNS does not resolve
retired_surfaces:
- name: CHAI Chat API
  documented_endpoint: POST https://api.chai-research.com/v1/chat/completions
  documented_auth: X-API_KEY request header, key issued from the docs "credentials" section
  docs_host: docs.chai-research.com
  state: withdrawn
  x-evidence:
    fetched: '2026-08-09'
    checks:
    - url: https://docs.chai-research.com/
      result: DNS NXDOMAIN — no A record
    - url: https://api.chai-research.com/v1/chat/completions
      method: POST
      http_status: 404
      note: bodyless 404 from a Google load balancer (via 1.1 google, content-length 0) —
        no route, not an auth rejection
    - url: https://api.chai-research.com/
      http_status: 404
- name: Chaiverse Python client
  package: chaiverse (PyPI)
  state: withdrawn
  x-evidence:
    fetched: '2026-08-09'
    checks:
    - url: https://pypi.org/pypi/chaiverse/json
      http_status: 404
    - url: https://pypi.org/simple/chaiverse/
      http_status: 404
    - url: https://github.com/chai-research/chaiverse
      http_status: 404
- name: ChaiPy app-bot API guide
  documented_at: https://chai.ml/doc/python-api
  state: withdrawn
  x-evidence:
    fetched: '2026-08-09'
    checks:
    - url: https://chai.ml/doc/python-api
      http_status: 404
    - url: https://chai.ml/
      http_status: 200
      note: redirects to https://www.chai-research.com/
live_surfaces:
- name: Chaiverse developer console
  url: https://console.chaiverse.com/
  state: live-but-gated
  auth: developer key (issued via the Chaiverse Discord bot) or HuggingFace OAuth sign-in
  x-evidence:
    fetched: '2026-08-09'
    checks:
    - url: https://console.chaiverse.com/openapi.json
      http_status: 307
      note: 'Location: /login — every path on this host redirects to the login page'
    - url: https://console.chaiverse.com/login
      http_status: 200
contract_discovery:
  performed: '2026-08-09'
  result: no machine-readable contract found on any host
  probes:
  - host: api.chai-research.com
    paths_404:
    - /openapi.json
    - /openapi.yaml
    - /swagger.json
    - /v1/openapi.json
    - /api-docs
    - /docs
    - /redoc
    - /rapidoc
    - /llms.txt
  - host: www.chai-research.com
    paths_404:
    - /openapi.json
    - /llms.txt
  - host: www.chaiverse.com
    paths_404:
    - /openapi.json
    - /llms.txt
    note: this host is an SPA that answers HTTP 200 with the app shell for /docs, /redoc,
      /api-docs and /leaderboard — those 200s are soft-404s, not documentation
  - host: auth.chaiverse.com
    paths_404:
    - /openapi.json
    - /docs
    - /redoc
    note: FastAPI-shaped JSON service ({"detail":"Not Found"}) with its interactive docs and
      schema routes disabled
  - host: console.chaiverse.com
    result: all paths 307 to /login
  graphql: no /graphql surface advertised or found
  mcp: no MCP server published or advertised
  agent_card: no /.well-known/agent-card.json or /.well-known/agent.json on any host