Claude fallback when GPT-5 is rate limited

Wrap each provider in its own Nopea instance, then catch a retry-exhausted OpenAI call and fail over to Claude.

import { Maskea, retries } from "@nopeatech/maskea";
import OpenAI from "openai";
import Anthropic from "@anthropic-ai/sdk";

const openai = new OpenAI();
const anthropic = new Anthropic();

const primary = new Maskea()
  .use(retries({ max: 2 }))
  .wrap(openai.chat.completions.create.bind(openai.chat.completions));

const fallback = new Maskea()
  .use(retries({ max: 2 }))
  .wrap(anthropic.messages.create.bind(anthropic.messages));

async function chat(prompt: string) {
  try {
    return await primary({ model: "gpt-4o-mini", messages: [{ role: "user", content: prompt }] });
  } catch {
    return await fallback({ model: "claude-3-5-haiku-20241022", max_tokens: 1024, messages: [{ role: "user", content: prompt }] });
  }
}

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