Gateway

Create response

Creates a response using the Responses API.

post/responses

Request

  • Base URL: https://api.phaseo.app/v1
  • URL: https://api.phaseo.app/v1/responses
  • Auth: HTTP bearer

Request body

modelstring required
modelsstring[]

Optional ordered fallback models tried after model. model is required and is always the primary model. When an attempt fails with 429, 500, 502, 503, or 504, the next entry is tried; other errors are returned unchanged. Accepts up to 25 model IDs or presets; duplicates and entries equal to model are ignored. Each attempt is validated, logged, and billed as its own request, and the response model field and routing trace show the model that served the request. Streaming requests fall back only before the first byte, and video and music jobs fall back only at submission. Batch, realtime, and council requests reject models. Fallbacks set on a dynamic route take precedence, and phaseo/auto cannot be combined with models.

backgroundboolean
includestring[]
instructionsstring
max_output_tokensinteger
metadataobject
session_idstring

Unique identifier for grouping related requests (for example, a conversation or agent workflow) for observability.

parallel_tool_callsboolean
previous_response_idstring
service_tier'standard' | 'default' | 'fast' | 'ultrafast' | 'priority' | 'flex' | 'batch'
storeboolean
streamboolean
temperaturenumber
textobject
top_pnumber
truncation'auto' | 'disabled'
userstring
prompt_cache_keystring nullable
safety_identifierstring nullable
modalitiesstring[]
usageboolean
metaboolean
echo_upstream_requestboolean

Example request

{
  "models": [
    "anthropic/claude-sonnet-5-5",
    "google/gemini-2.5-flash"
  ]
}

Response

Response

idstring
objectstring
createdinteger
modelstring
providerstring
provider_idstring
nativeResponseIdstring nullable
status'completed' | 'failed' | 'incomplete'
finish_reasonstring nullable
metaobject
cost_nanosnumber
cost_centsinteger
currencystring
pricing_linesobject[]
contentobject[]
rolestring
stop_reasonstring
typestring

Changes

No recorded changes to this operation across all 1 revision of this API.