Models - OpenRouter | Documentation

Overview

Model information endpoints

Available Operations

get - Get a model by its slug
list - List all models and their properties
count - Get total count of available models
list_for_user - List models filtered by user provider preferences, privacy settings, and guardrails

get

Returns full details for a single model identified by its author and slug (e.g. openai/gpt-4). Supports variant suffixes (e.g. openai/gpt-4:free) and resolves known slug aliases.

Example Usage

from openrouter import OpenRouter
import os


with OpenRouter(
    http_referer="<value>",
    x_open_router_title="<value>",
    x_open_router_categories="<value>",
    api_key=os.getenv("OPENROUTER_API_KEY", ""),
) as open_router:

    res = open_router.models.get(author="openai", slug="gpt-4")

    # Handle response
    print(res)

Parameters

Parameter	Type	Required	Description	Example
`author`	str	:heavy_check_mark:	The author/organization of the model	openai
`slug`	str	:heavy_check_mark:	The model slug, optionally including a variant suffix (e.g. gpt-4 or gpt-4:free)	gpt-4
`http_referer`	Optional[str]	:heavy_minus_sign:	The app identifier should be your app’s URL and is used as the primary identifier for rankings. This is used to track API usage per application.
`x_open_router_title`	Optional[str]	:heavy_minus_sign:	The app display name allows you to customize how your app appears in OpenRouter’s dashboard.
`x_open_router_categories`	Optional[str]	:heavy_minus_sign:	Comma-separated list of app categories (e.g. “cli-agent,cloud-agent”). Used for marketplace rankings.
`retries`	Optional[utils.RetryConfig]	:heavy_minus_sign:	Configuration to override the default retry behavior of the client.

Response

components.ModelResponse

Errors

Error Type	Status Code	Content Type
errors.NotFoundResponseError	404	application/json
errors.InternalServerResponseError	500	application/json
errors.OpenRouterDefaultError	4XX, 5XX	/

list

List all models and their properties

Example Usage

from openrouter import OpenRouter
import os


with OpenRouter(
    http_referer="<value>",
    x_open_router_title="<value>",
    x_open_router_categories="<value>",
    api_key=os.getenv("OPENROUTER_API_KEY", ""),
) as open_router:

    res = open_router.models.list()

    # Handle response
    print(res)

Parameters

Parameter	Type	Required	Description	Example
`http_referer`	Optional[str]	:heavy_minus_sign:	The app identifier should be your app’s URL and is used as the primary identifier for rankings. This is used to track API usage per application.
`x_open_router_title`	Optional[str]	:heavy_minus_sign:	The app display name allows you to customize how your app appears in OpenRouter’s dashboard.
`x_open_router_categories`	Optional[str]	:heavy_minus_sign:	Comma-separated list of app categories (e.g. “cli-agent,cloud-agent”). Used for marketplace rankings.
`category`	Optional[operations.GetModelsCategory]	:heavy_minus_sign:	Filter models by use case category	programming
`supported_parameters`	Optional[str]	:heavy_minus_sign:	Filter models by supported parameter (comma-separated)	temperature
`output_modalities`	Optional[str]	:heavy_minus_sign:	Filter models by output modality. Accepts a comma-separated list of modalities (text, image, audio, embeddings) or “all” to include all models. Defaults to “text”.	text
`sort`	Optional[operations.GetModelsSort]	:heavy_minus_sign:	Sort the returned models server-side. Prefer this over fetching the full list and sorting client-side. Options: pricing-low-to-high, pricing-high-to-low (average prompt/completion price), context-high-to-low (context length), throughput-high-to-low, latency-low-to-high (recent median performance), most-popular, top-weekly (tokens processed in the last week), newest (creation date), intelligence-high-to-low (Artificial Analysis intelligence index), design-arena-elo-high-to-low (best Design Arena ELO across arenas). Models without a score for the chosen benchmark are placed last. When omitted, the existing default ordering is preserved.	newest
`q`	Optional[str]	:heavy_minus_sign:	Free-text search by model name or slug.	gpt-4
`input_modalities`	Optional[str]	:heavy_minus_sign:	Filter models by input modality. Comma-separated list of: text, image, audio, file.	text,image
`context`	Optional[int]	:heavy_minus_sign:	Minimum context length (tokens). Models with smaller context are excluded.	128000
`min_price`	OptionalNullable[float]	:heavy_minus_sign:	Minimum prompt price in $/M tokens.	0
`max_price`	OptionalNullable[float]	:heavy_minus_sign:	Maximum prompt price in $/M tokens.	10
`arch`	Optional[str]	:heavy_minus_sign:	Filter models by architecture/model family (e.g. GPT, Claude, Gemini, Llama).	GPT
`model_authors`	Optional[str]	:heavy_minus_sign:	Filter models by the organization that created the model. Comma-separated list of author slugs.	openai,anthropic
`providers`	Optional[str]	:heavy_minus_sign:	Filter models by hosting provider. Comma-separated list of provider names.	OpenAI,Anthropic
`distillable`	Optional[operations.Distillable]	:heavy_minus_sign:	Filter by distillation capability. “true” returns only distillable models, “false” excludes them.	true
`zdr`	Optional[operations.Zdr]	:heavy_minus_sign:	When set to “true”, return only models with zero data retention endpoints.	true
`region`	Optional[operations.Region]	:heavy_minus_sign:	Filter to models with endpoints in the given data region. Currently only “eu” is supported.	eu
`retries`	Optional[utils.RetryConfig]	:heavy_minus_sign:	Configuration to override the default retry behavior of the client.

Response

components.ModelsListResponse

Errors

Error Type	Status Code	Content Type
errors.BadRequestResponseError	400	application/json
errors.InternalServerResponseError	500	application/json
errors.OpenRouterDefaultError	4XX, 5XX	/

count

Get total count of available models

Example Usage

from openrouter import OpenRouter
import os


with OpenRouter(
    http_referer="<value>",
    x_open_router_title="<value>",
    x_open_router_categories="<value>",
    api_key=os.getenv("OPENROUTER_API_KEY", ""),
) as open_router:

    res = open_router.models.count()

    # Handle response
    print(res)

Parameters

Parameter	Type	Required	Description	Example
`http_referer`	Optional[str]	:heavy_minus_sign:	The app identifier should be your app’s URL and is used as the primary identifier for rankings. This is used to track API usage per application.
`x_open_router_title`	Optional[str]	:heavy_minus_sign:	The app display name allows you to customize how your app appears in OpenRouter’s dashboard.
`x_open_router_categories`	Optional[str]	:heavy_minus_sign:	Comma-separated list of app categories (e.g. “cli-agent,cloud-agent”). Used for marketplace rankings.
`output_modalities`	Optional[str]	:heavy_minus_sign:	Filter models by output modality. Accepts a comma-separated list of modalities (text, image, audio, embeddings) or “all” to include all models. Defaults to “text”.	text
`retries`	Optional[utils.RetryConfig]	:heavy_minus_sign:	Configuration to override the default retry behavior of the client.

Response

components.ModelsCountResponse

Errors

Error Type	Status Code	Content Type
errors.BadRequestResponseError	400	application/json
errors.InternalServerResponseError	500	application/json
errors.OpenRouterDefaultError	4XX, 5XX	/

list_for_user

List models filtered by user provider preferences, privacy settings, and guardrails. If requesting through eu.openrouter.ai/api/v1/... the results will be filtered to models that satisfy EU in-region routing.

Example Usage

from openrouter import OpenRouter, operations
import os


with OpenRouter(
    http_referer="<value>",
    x_open_router_title="<value>",
    x_open_router_categories="<value>",
) as open_router:

    res = open_router.models.list_for_user(security=operations.ListModelsUserSecurity(
        bearer=os.getenv("OPENROUTER_BEARER", ""),
    ))

    # Handle response
    print(res)

Parameters

Parameter	Type	Required	Description
`security`	operations.ListModelsUserSecurity	:heavy_check_mark:	N/A
`http_referer`	Optional[str]	:heavy_minus_sign:	The app identifier should be your app’s URL and is used as the primary identifier for rankings. This is used to track API usage per application.
`x_open_router_title`	Optional[str]	:heavy_minus_sign:	The app display name allows you to customize how your app appears in OpenRouter’s dashboard.
`x_open_router_categories`	Optional[str]	:heavy_minus_sign:	Comma-separated list of app categories (e.g. “cli-agent,cloud-agent”). Used for marketplace rankings.
`retries`	Optional[utils.RetryConfig]	:heavy_minus_sign:	Configuration to override the default retry behavior of the client.

Response

components.ModelsListResponse

Errors

Error Type	Status Code	Content Type
errors.UnauthorizedResponseError	401	application/json
errors.NotFoundResponseError	404	application/json
errors.InternalServerResponseError	500	application/json
errors.OpenRouterDefaultError	4XX, 5XX	/

​Overview

​Available Operations

​get

​Example Usage

​Parameters

​Response

​Errors

​list

​Example Usage

​Parameters

​Response

​Errors

​count

​Example Usage

​Parameters

​Response

​Errors

​list_for_user

​Example Usage

​Parameters

​Response

​Errors

Overview

Available Operations

get

Example Usage

Parameters

Response

Errors

list

Example Usage

Parameters

Response

Errors

count

Example Usage

Parameters

Response

Errors

list_for_user

Example Usage

Parameters

Response

Errors