Fusion - Open-Weight Models

Fusion Model. Internal reviewers examine the conversation and available tool results, then a final model returns the next OpenAI-compatible response, including tool calls when tools are provided. Supports repeated multi-turn calls, client-executed tools, and JSON responses. Internal review notes are not returned.

Open endpoint ↗

Price per call: $0.05
Chain: Base
Method: POST
Paid calls · 30 days: 7

Call it from code

This API is run by its own provider and paid directly through x402. We list it so you can find it; we don't route or hold the payment.

import { x402Client, wrapFetchWithPayment } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";

const client = new x402Client();
registerExactEvmScheme(client, { signer: agentAccount });

const pay = wrapFetchWithPayment(fetch, client);
const res = await pay("https://api.ai-open-models.com/v1/fusion/chat/completions", { method: "POST" });
console.log(await res.json());

https://api.ai-open-models.com/v1/fusion/chat/completions