Models | OpenDunes Docs

The model catalog is public — no API key required. Each entry includes the provider, capabilities, context length, and DA pricing.

List models#

The catalog endpoint is GET /api/models. You can query it directly with Go's net/http or any HTTP client:

package main

import (
	"encoding/json"
	"fmt"
	"net/http"
)

type Model struct {
	Slug        string `json:"slug"`
	Name        string `json:"name"`
	Provider    string `json:"provider"`
	ContextLen  int    `json:"context_length"`
}

type CatalogResponse struct {
	Data []Model `json:"data"`
}

func main() {
	resp, err := http.Get("https://opendunes.com/api/models?sort=popularity&order=desc")
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	var catalog CatalogResponse
	if err := json.NewDecoder(resp.Body).Decode(&catalog); err != nil {
		panic(err)
	}

	for _, m := range catalog.Data {
		fmt.Printf("%s  (%s, %d ctx)\n", m.Slug, m.Name, m.ContextLen)
	}
}

Filters and sorting#

Append query parameters to narrow results:

Parameter	Values	Description
`q`	string	Full-text search
`provider`	e.g. `anthropic`	Filter by provider
`capability`	`streaming`, `tools`, `vision`, `json_mode`	Required capability
`free`	`true`	Free models only
`context_min`	integer	Minimum context window
`sort`	`popularity`, `price`, `name`, `context`, `newest`	Sort field
`order`	`asc`, `desc`	Sort direction

Single model#

Fetch a specific model by its slug:

resp, err := http.Get("https://opendunes.com/api/models/meta-llama/llama-4-maverick")

The slug format is always provider/model. You can also browse the full catalog in the UI at /models.

Additional endpoints#

GET /api/models/facets — available filter values (providers, capabilities, modalities).
GET /api/models/stats — aggregate counts and pricing stats across the catalog.