Fireworks AI

Fireworks is an inference platform optimized for running open-source models (Llama, DeepSeek, Mistral) at production scale with competitive speed and cost.

Why Vibe Coders Use It

• Open models at scale — fast, reliable access to Llama, DeepSeek, Mixtral
• Image generation — run Stable Diffusion, FLUX for image generation tasks
• Fine-tuning — upload and serve your own fine-tuned models
• Production SLAs — enterprise-grade reliability for customer-facing AI
• Competitive pricing — often cheaper than Claude or GPT for equivalent performance

Key Specs

Getting Started

1. Sign Up for Fireworks

Visit fireworks.ai and create an account.

2. Get an API Key

Generate an API key from your Fireworks dashboard.

3. Install the AI SDK Provider

npm install @ai-sdk/fireworks

4. Quick Chat Example

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

const { text } = await generateText({
  model: fireworks('accounts/fireworks/models/llama-v3p3-70b-instruct'),
  prompt: 'Build a validation function for email addresses in TypeScript',
});

console.log(text);

5. Using DeepSeek for Complex Reasoning

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

const { text } = await generateText({
  model: fireworks('accounts/fireworks/models/deepseek-r1'),
  prompt: 'Design a distributed cache invalidation strategy for a multi-region system',
});

6. Image Generation Example

import { fireworks } from '@ai-sdk/fireworks';
import { experimental_generateImage as generateImage } from 'ai';

const { image } = await generateImage({
  model: fireworks.image('accounts/fireworks/models/stable-diffusion-xl-1024-v1-0'),
  prompt: 'A modern, minimalist UI mockup for a task management app',
});

console.log(image.url);

7. Fine-Tuning Your Model

// Upload training data
const finetuneResponse = await fetch(
  'https://api.fireworks.ai/inference/v1/fine_tune',
  {
    method: 'POST',
    headers: { 'Authorization': `Bearer ${FIREWORKS_API_KEY}` },
    body: JSON.stringify({
      account_id: 'your-account',
      model: 'accounts/fireworks/models/llama-v3p3-70b-instruct',
      training_data: [
        {
          messages: [
            {
              role: 'system',
              content: 'You are a technical documentation expert',
            },
            { role: 'user', content: '...' },
          ],
        },
      ],
    }),
  }
);

// Your fine-tuned model is ready to use

8. Streaming Chat

import { fireworks } from '@ai-sdk/fireworks';
import { streamText } from 'ai';

export async function POST(req: Request) {
  const { messages } = await req.json();

  const result = streamText({
    model: fireworks('accounts/fireworks/models/llama-v3p3-70b-instruct'),
    messages,
  });

  return result.toDataStreamResponse();
}

When to Use Fireworks vs. Alternatives

Use Fireworks when you want reliable, scalable access to open models with fine-tuning support. Use Claude or GPT if you need the strongest proprietary reasoning.

Popular Models

• Llama 3.3 70B — Strong general-purpose
• DeepSeek-R1 — Excellent reasoning
• Mixtral 8x7B — Efficient, capable
• Codestral — Code generation specialist

Resources

• Fireworks AI Official
• Fireworks AI Documentation
• Fireworks AI Model Library
• AI SDK Fireworks Provider
• See the full Fireworks profile on LLMReference →