Responses API

APIONE provides POST /v1/responses. Choose a model that supports Responses. A Chat Completions request body cannot be reused unchanged.

Minimal request

Set APIONE_API_KEY and APIONE_MODEL as described in the quickstart. Choose an ID from available models. This example uses the basic Responses text format:

curl --fail-with-body --max-time 120 https://api.apione.ai/v1/responses \
  -H "Authorization: Bearer ${APIONE_API_KEY:?Set APIONE_API_KEY first}" \
  -H "Content-Type: application/json" \
  --data "{\"model\":\"${APIONE_MODEL:?Set APIONE_MODEL first}\",\"input\":\"Hello\"}"

Read output[]: select items with type: "message", then text blocks with type: "output_text" in their content[]. The text is in text, rather than Chat Completions’ choices[0].message.content.

Configure the client

Use https://api.apione.ai/v1 as the OpenAI SDK Base URL. For clients requiring a complete endpoint, use https://api.apione.ai/v1/responses. See Codex integration. Verify text before tools or streaming. Storage, background tasks, built-in tools, and extension fields require separate compatibility checks. On failure, save the status, error body, and the actual request-identifier header names and values for troubleshooting. Sources: APIONE endpoints and the OpenAI Responses format.

Addresses and authentication

Model APIs

Output and advanced usage

Image APIs

Video APIs

Minimal request

Configure the client