Cheap LLM API

Choosing a cheap llm api

Production LLM bills grow with traffic, prompt length and answer length. Trimming system prompts, caching repeated context and capping max_tokens typically cuts spend more than switching providers.

Once the prompt is lean, the rate card decides the rest. Somnus doubles every top-up, which halves the rate card for every model at once without touching your code.

Cheap LLM API: price ranking

Ranked by blended price (3 input : 1 output tokens).

Why Somnus for cheap llm api

• Somnus buys model access in bulk and passes the saving on as extra credit.
• Pay-as-you-go. No monthly caps or throttling — spend your balance however you like.
• $5 free credit on sign-up, no card needed.
• Switch models by changing one string — same key, same balance.

Point the OpenAI SDK at Somnus

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.SOMNUS_API_KEY,
  baseURL: "https://gateway-production-c837.up.railway.app/v1",
});

const resp = await client.chat.completions.create({
  model: "claude-sonnet-5",
  messages: [
    {"role": "user", "content": "Cheap LLM API"}
  ],
});
console.log(resp.choices[0].message.content);

Pick the model name from your dashboard.

Questions

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