JavaScript SDK

npm install openai

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: process.env.YELU_API_KEY,
  baseURL: 'https://api.yelu.ai/v1',
  timeout: 60_000,
  maxRetries: 2,
});

const completion = await client.chat.completions.create({
  model: 'gpt-4o-mini',
  messages: [
    { role: 'system', content: 'Be concise.' },
    { role: 'user', content: 'Explain vector search.' },
  ],
  max_completion_tokens: 200,
});

console.log(completion.choices[0].message.content);
console.log(completion.usage);

const response = await client.responses.create({
  model: 'gpt-4o-mini',
  instructions: 'Answer for a software engineer.',
  input: 'What is backpressure?',
  max_output_tokens: 200,
});

console.log(response.output_text);

const stream = await client.chat.completions.create({
  model: 'gpt-4o-mini',
  messages: [{ role: 'user', content: 'Write a short release note.' }],
  stream: true,
});

for await (const chunk of stream) {
  process.stdout.write(chunk.choices[0]?.delta?.content ?? '');
}

try {
  await client.models.list();
} catch (error) {
  if (error instanceof OpenAI.AuthenticationError) {
    console.error('Check YELU_API_KEY');
  } else if (error instanceof OpenAI.RateLimitError) {
    console.error('Back off before retrying');
  } else if (error instanceof OpenAI.APIConnectionError) {
    console.error('Network or TLS failure', error.cause);
  } else if (error instanceof OpenAI.APIError) {
    console.error(error.status, error.code, error.message);
  } else {
    throw error;
  }
}