Building Production AI Apps on a $10/Month Budget

The assumption that AI-powered apps are expensive is mostly wrong. With the right model selection and a few architectural decisions, you can serve thousands of users for under $10/month. Here's the exact setup we use internally.

The Core Principle: Match Model to Task

The biggest mistake developers make is using a single expensive model for everything. A $15/1M token model is overkill for classifying support tickets. A $0.05/1M token model is perfectly capable of that task.

The key is building a routing layer that matches each request to the cheapest model that can handle it adequately.

Task Tiers and Model Recommendations

• Tier 1 — Simple classification, extraction, formatting: Use GLM-5 Turbo ($0.05/1M). Fast, cheap, accurate for structured tasks.
• Tier 2 — Summarization, Q&A, content generation: Use ERNIE 4.5 Turbo ($0.08/1M) or DeepSeek R1 ($0.14/1M).
• Tier 3 — Complex reasoning, coding, analysis: Use DeepSeek R1 ($0.14/1M) or Qwen3 235B ($0.22/1M).

A Simple Routing Implementation

const getModel = (taskType: string) => {
  switch (taskType) {
    case 'classify':
    case 'extract':
    case 'format':
      return 'zhipu/glm-5-turbo';        // $0.05/1M
    case 'summarize':
    case 'qa':
      return 'baidu/ernie-4.5-turbo';    // $0.08/1M
    case 'reason':
    case 'code':
    case 'analyze':
      return 'deepseek/deepseek-r1';     // $0.14/1M
    default:
      return 'cheap-model';              // auto-select
  }
};

const response = await client.chat.completions.create({
  model: getModel(taskType),
  messages: [{ role: 'user', content: prompt }],
});

Caching: The Biggest Win

For many applications, 30–50% of requests are near-identical. Implement semantic caching using embeddings to avoid re-running expensive model calls for similar inputs. A simple Redis-based cache with cosine similarity matching can cut your costs in half.

Real Numbers

One of our customers runs a customer support bot handling 10,000 messages/day. Before TokonLab: $340/month on GPT-4o. After switching to our tiered routing (mostly GLM-5 Turbo and ERNIE 4.5 Turbo, with DeepSeek R1 for complex cases): $8.40/month.

Start with our free tier — no credit card required. Get your API key →