Models - NagaAI Documentation

Browse the catalog

naga.ac/models lists every model with its price, context window and inputs. You can filter by input and output type, by supported parameter and by publisher, and sort by price, latency, throughput or popularity. Each model page has a copy button for its id and a Try in Playground link.

Free and paid models

A model id that ends in :free costs nothing. Free models share one rate limit per account, listed in Limits. Every other model needs a balance of at least 0.05 credits, see Limits.

The catalog in code

GET /v1/models returns the same catalog. It works without a key, for example with cURL. The SDKs always send a key, so pass a real one: an invalid key fails with 401. With a key whose account has no balance, the list shrinks to the :free models.

import os
from openai import OpenAI

client = OpenAI(base_url="https://api.naga.ac/v1", api_key=os.environ["NAGAAI_API_KEY"])

for model in client.models.list():
    print(model.id)

import OpenAI from "openai";

const client = new OpenAI({ baseURL: "https://api.naga.ac/v1", apiKey: process.env.NAGAAI_API_KEY });

for await (const model of client.models.list()) {
  console.log(model.id);
}

curl https://api.naga.ac/v1/models

One entry, shortened:

{
  "id": "claude-sonnet-5",
  "object": "model",
  "owned_by": "anthropic",
  "display_name": "Claude Sonnet 5",
  "context_window": 1000000,
  "supported_endpoints": ["chat.completions"],
  "pricing": {
    "per_input_token": 1e-06,
    "per_cached_input_token": 1e-07,
    "per_output_token": 5e-06
  },
  "architecture": {
    "input_modalities": ["text", "image"],
    "output_modalities": ["text"]
  },
  "supported_parameters": ["max_completion_tokens", "reasoning_effort", "response_format", "temperature", "tools"]
}

Field	Meaning
`supported_endpoints`	Which endpoint family serves the model. `chat.completions` means all three chat endpoints: `/v1/chat/completions`, `/v1/responses` and `/v1/messages`. Other values are `embeddings`, `moderations`, `images.generations`, `images.edits`, `audio.speech`, `audio.transcriptions` and `audio.translations`.
`architecture.input_modalities`	What the model accepts: `text`, `image`, `audio`, `file`. A request with another input type fails with `400` before it reaches a provider.
`supported_parameters`	Optional request parameters that at least one provider of the model accepts. The provider serving a request may still drop some of them, see Differences from OpenAI and Anthropic.
`pricing`	Credits per unit, where one credit is one US dollar. `1e-06` per input token is $1 per million tokens. Units other than tokens appear for images, audio and characters.
`aliases`	Other names the model answers to.
`max_output_images`	How many images one request can return, on image models.
`created`, `description`, `owned_by`	When the model joined the catalog, a short description, and the publisher (or `null`).
`deprecates_at`	Unix time after which the model returns `410 model_deprecated`.

Aliases and dated ids

Some models have a dated id and a short alias, for example gpt-image-2-2026-04-21 and gpt-image-2. A request may use either. The model field of the response always holds the catalog id, so pin the id you see there if you need the exact version.