Vercel AI SDK

npm i ai @ai-sdk/openai-compatible zod

export HOPBASE_API_KEY=sk-your-key

import { createOpenAICompatible } from '@ai-sdk/openai-compatible';

export const hopbase = createOpenAICompatible({
  name: 'hopbase',
  baseURL: 'https://api.hop-base.com/v1',
  apiKey: process.env.HOPBASE_API_KEY,
  includeUsage: true, // report token usage on streamed responses
});

import { generateText } from 'ai';
import { hopbase } from './hopbase';

const { text } = await generateText({
  model: hopbase('deepseek-v4.1-flash-1017'),
  prompt: 'Reply with one word: hello.',
});
console.log(text);

import { streamText } from 'ai';
import { hopbase } from './hopbase';

const result = streamText({
  model: hopbase('deepseek-v4.1-flash-1017'),
  prompt: 'Count from 1 to 5.',
});
for await (const delta of result.textStream) process.stdout.write(delta);

import { generateText, tool, stepCountIs } from 'ai';
import { z } from 'zod';
import { hopbase } from './hopbase';

const { text } = await generateText({
  model: hopbase('deepseek-v4.1-flash-1017'),
  tools: {
    getWeather: tool({
      description: 'Get the weather for a city',
      inputSchema: z.object({ city: z.string() }),
      execute: async ({ city }) => ({ city, tempC: 21 }),
    }),
  },
  stopWhen: stepCountIs(3),
  prompt: 'What is the weather in Tokyo? Use the tool.',
});
console.log(text);

import { createAnthropic } from '@ai-sdk/anthropic';
import { generateText } from 'ai';

const hopbaseClaude = createAnthropic({
  baseURL: 'https://api.hop-base.com/v1',
  apiKey: process.env.HOPBASE_API_KEY,
});

const { text } = await generateText({
  model: hopbaseClaude('claude-sonnet-5-5'),
  prompt: 'Reply with one word: hello.',
});