Gateway Free
- 100,000 tokens a month
- 5 API keys
- Basic models (Llama 3.3, DeepSeek, GPT-OSS)
- No credit card
AI Gateway
Access models through an OpenAI-compatible API. Organize keys, review usage and choose an access plan for your application.
Model availability and BYOK depend on your plan and configuration.

Configure the URL and your key. Retrieve enabled identifiers with client.models.list() and choose one for NAPSIX_MODEL_ID.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://www.napsix.com/api/gateway/v1",
apiKey: process.env.NAPSIX_API_KEY,
});
// Mato v1.0 — nuestro modelo insignia: gratis en todos los planes.
const response = await client.chat.completions.create({
model: "napsix/mato-v1.0",
messages: [{ role: "user", content: "Hola Mato" }],
});
console.log(response.choices[0].message.content);
// Todos los modelos disponibles:
// const models = await client.models.list();Integration example. Set NAPSIX_API_KEY and NAPSIX_MODEL_ID on your server; do not expose keys in the browser.
OpenAI-compatible: change the baseURL, use your API key, done. Mato v1.0 — our flagship model — is included free on every plan.
| What you need | Value |
|---|---|
| Base URL | https://www.napsix.com/api/gateway/v1 |
| Authentication | Authorization: Bearer nsx_live_… |
| Mato v1.0 | Free on every plan: 10M tokens/month on Free (separate quota, doesn't consume your plan) |
| Rate limits | 100 req/min per key · 300 req/min platform-wide for Mato |
| Errors | OpenAI-style (401 / 402 / 403 / 429 / 503) |
Separate access, model selection and usage monitoring.
Use the OpenAI-compatible chat completions format. Validate which parameters each model supports.
Choose a model enabled for your task and plan from the platform catalog.
Connect your own keys when your plan includes it. Provider usage remains subject to its own terms.
Review application usage in the Gateway console and compare it with your plan limits.
Check the selected model's capabilities before adding streaming, tools or multimodal inputs.
Consult the OpenAPI schema and use the example URL to prepare your integration.
BYOK always free. You pay for features and included tokens.
| What's included | Gateway Free | Gateway Starter | Gateway Pro | Gateway Enterprise |
|---|---|---|---|---|
| Tokens per month | 100,000 | 10,000,000 | 100,000,000 | Unlimited |
| API keys | 5 | 25 | Unlimited | Unlimited |
| People | 1 | 5 | 25 | Unlimited |
| BYOK · your own keys | No | Yes | Yes | Yes |
Monthly limits where indicated. Features and conditions depend on your selected plan; consult the catalog for available models.
Your next step
Start with an account or talk to us about the scope of your team and application.