Models

The gateway serves hundreds of models from every major lab. Use the model id exactly as listed by GET /v1/models: if the catalog lists it, model: "<author>/<slug>" works here. Example ids: anthropic/claude-sonnet-5, deepseek/deepseek-v4.1-flash, google/gemini-3.8-flash, and openai/gpt-6-luna. Some models also have variant ids in the catalog, such as a :free or :batch suffix; use them exactly as listed. Append :online to a model id to add web search, the same as the web plugin. See fallbacks and advanced options.

List models with prices

curl --fail-with-body https://api.pre.dev/v1/models \
  -H "Authorization: Bearer $PREDEV_API_KEY"

Each row describes the model (id, name, context_length, supported modalities and parameters, and so on) and carries a predev object with its prices in credits:

{
  "id": "deepseek/deepseek-v4.1-flash",
  "name": "DeepSeek: DeepSeek V4.1 Flash",
  "context_length": 1048576,
  "predev": {
    "credits_per_m_input": 2.5,
    "credits_per_m_output": 10
  }
}

The numbers above are illustrative; read the live row for current prices. The catalog reference lists every predev field. The catalog refreshes every 15 minutes. The x-predev-catalog-age response header reports seconds since the last refresh. Catalog reads are free and not rate-limited. Other catalog endpoints: /v1/models/count, /v1/embeddings/models, /v1/images/models, and /v1/videos/models. See the catalog reference.

Pick a model in code

Filter the catalog rather than hard-coding assumptions about price or context length:

const response = await fetch('https://api.pre.dev/v1/models', {
  headers: { Authorization: `Bearer ${process.env.PREDEV_API_KEY}` },
});
const { data } = await response.json();
const cheapest = data
  .filter((m: any) => m.context_length >= 128000)
  .sort((a: any, b: any) => a.predev.credits_per_m_output - b.predev.credits_per_m_output)[0];
console.log(cheapest.id, cheapest.predev);

import os
import requests

rows = requests.get(
    "https://api.pre.dev/v1/models",
    headers={"Authorization": f"Bearer {os.environ['PREDEV_API_KEY']}"},
).json()["data"]
cheapest = min(
    (m for m in rows if m["context_length"] >= 128000),
    key=lambda m: m["predev"]["credits_per_m_output"],
)
print(cheapest["id"], cheapest["predev"])

Invalid ids

An id the catalog does not serve returns a 4xx error in the OpenAI error shape. The message keeps what the model service said about the request; check the id against GET /v1/models. See errors. Send several ids in models to fall back automatically. See fallbacks and advanced options.

API

Specs (Architect)

Browser Agents

AI Gateway

SDKs

MCP

List models with prices

Pick a model in code

Invalid ids

​List models with prices

​Pick a model in code

​Invalid ids

List models with prices

Pick a model in code

Invalid ids