Model capabilities

Capabilities can differ between provider endpoints for the same model. Query GET /v1/models with your Planck API key to see the models and routes currently available to your organization.

Do not hard-code a provider-wide capability list. Availability can depend on the exact model version, endpoint, credentials, organization policy, and PTB/BYOK mode.

Gateway operations

Capability	Route	Registry operation
Chat Completions	`POST /v1/chat/completions`	`chat_completions`
Responses	`POST /v1/responses`	`responses`
Embeddings	`POST /v1/embeddings`	`embeddings`
Images	`POST /v1/images/generations`	`image_generations`
Reranking	`POST /v1/rerank`	`rerank`
Video	`POST /v1/videos`	`video_generations`
Audio transcription	`POST /v1/audio/transcriptions`	`audio_transcriptions`
Audio translation	`POST /v1/audio/translations`	`audio_translations`
Text to speech	`POST /v1/audio/speech`	`audio_speech`
Files	`/v1/files*`	`files`

Inspect one model

cURL

curl -s https://api.inquantum.ai/v1/models/gpt-4o \
  -H "Authorization: Bearer $PLANCK_API_KEY" | jq '{
    id,
    operations,
    inputModalities,
    outputModalities,
    supportsTools,
    supportsToolChoice,
    supportsWebSearch,
    supportsImageInput,
    hasByok,
    hasPtb,
    endpoints
  }'

TypeScript

const response = await fetch("https://api.inquantum.ai/v1/models/gpt-4o", {
  headers: { Authorization: `Bearer ${process.env.PLANCK_API_KEY}` },
});

if (!response.ok) throw new Error(await response.text());

const model = await response.json();
console.log(model.operations);
console.log(model.endpoints.map((endpoint: any) => ({
  provider: endpoint.provider,
  parameters: endpoint.supportedParameters,
  operations: endpoint.supportedOperations,
  hasByok: endpoint.hasByok,
  hasPtb: endpoint.hasPtb,
})));

Read the response

Field	Meaning
`operations`	Union of operations supported by at least one accessible endpoint.
`supportedParameters`	Union of request parameters supported by accessible endpoints.
`inputModalities`	Model inputs such as `text`, `image`, or `audio`.
`outputModalities`	Model outputs such as `text`, `image`, or `audio`.
`supportsTools`	At least one accessible endpoint accepts `tools`.
`supportsToolChoice`	At least one accessible endpoint accepts `tool_choice`.
`supportsReasoningEffort`	At least one endpoint accepts a reasoning control.
`supportsWebSearch`	At least one endpoint exposes the hosted `web` plugin.
`supportsImageInput`	The model metadata includes image input.
`hasByok`	At least one endpoint is available with your configured provider keys.
`hasPtb`	At least one endpoint is available with Planck credits for this request.
`endpoints`	Provider-specific capabilities, pricing, limits, and compliance metadata.

Model-level booleans and arrays are unions. If your request needs several features together—for example streaming plus tools—verify that one endpoint contains every required parameter and operation.

Match a complete requirement

This example finds endpoints that support Chat Completions, streaming, tools, and tool selection together.

TypeScript

const requiredParameters = ["stream", "tools", "tool_choice"];

const compatible = model.endpoints.filter((endpoint: any) =>
  endpoint.supportedOperations.includes("chat_completions") &&
  requiredParameters.every((parameter) =>
    endpoint.supportedParameters.includes(parameter),
  ) &&
  (endpoint.hasByok || endpoint.hasPtb),
);

if (compatible.length === 0) {
  throw new Error("No accessible endpoint satisfies every requirement");
}

console.table(compatible.map((endpoint: any) => ({
  provider: endpoint.provider,
  context: endpoint.contextLength,
  maxOutput: endpoint.maxCompletionTokens,
  byok: endpoint.hasByok,
  ptb: endpoint.hasPtb,
})));

To lock routing to a compatible provider, use the provider-qualified model syntax described in Provider routing.

Common checks

You want to…	Check
Stream chat	endpoint has `chat_completions` and parameter `stream`
Call tools	endpoint has parameters `tools` and, if needed, `tool_choice`
Request structured JSON	endpoint has `response_format` or `structured_outputs`
Send an image	`supportsImageInput` and `inputModalities` includes `image`
Use hosted web search	`supportsWebSearch` or `supportedPlugins` includes `web`
Set reasoning effort	`supportsReasoningEffort` and endpoint reasoning parameter
Pay with credits	endpoint `hasPtb` is `true`
Use your provider key	endpoint `hasByok` is `true`

List and filter models

Models with tools and streaming

curl -s https://api.inquantum.ai/v1/models \
  -H "Authorization: Bearer $PLANCK_API_KEY" | \
  jq -r '.data[]
    | select(any(.endpoints[];
        (.supportedOperations | index("chat_completions")) and
        (.supportedParameters | index("tools")) and
        (.supportedParameters | index("stream"))))
    | .id'

Models with image input

curl -s https://api.inquantum.ai/v1/models \
  -H "Authorization: Bearer $PLANCK_API_KEY" | \
  jq -r '.data[] | select(.supportsImageInput) | .id'

The response is already filtered by accessible credentials, PTB availability, and your organization’s model policy. A model can disappear or change availability when those inputs change, so refresh this data rather than treating it as a permanent build-time list.

Provider routing

Select or exclude providers after checking endpoint capabilities.

Models API

See the model discovery endpoint reference.

Getting Started

AI Gateway

Observability & Analytics

Prompt Management

Async Logging

Custom Logs

Model capabilities

Gateway operations

Inspect one model

Read the response

Match a complete requirement

Common checks

List and filter models

Provider routing

Models API

​Gateway operations

​Inspect one model

​Read the response

​Match a complete requirement

​Common checks

​List and filter models

Provider routing

Models API

Gateway operations

Inspect one model

Read the response

Match a complete requirement

Common checks

List and filter models