Billing Tracking

Get cost details and usage details in every call

Infron uses a transparent billing system to ensure every call is precisely metered and billed. Pricing differs across models, and the same model may be priced differently across providers.

Model Prices

Model prices for each provider are listed on the model detail page.

Billing Items

You can enable usage accounting in your requests by including the usage parameter:

Usage Accounting

Python

import requests
import json

response = requests.post(
  url="https://llm.onerouter.pro/v1/chat/completions",
  headers={
    "Authorization": "Bearer <API_Keys>",
    "Content-Type": "application/json"
  },
  data=json.dumps({
    "model": "x-ai/grok-4.1-fast-reasoning", 
    "messages": [
      {
        "role": "user",
        "content": "What is the meaning of life?"
      }
    ],
    "usage": {
      "include": True
    },
    "reasoning": {
        "effort": "none"
    }
  })
)
print(response.json())

cURL

When usage accounting is enabled, the response will include

• usage object with detailed token information

• cost object with the total amount charged to your account.

• cost_details object with the breakdown of the total cost.

{
  'choices': [{
    'finish_reason': 'stop',
    'index': 0,
    'logprobs': None,
    'message': {
      'content': '42.\n\n(That\'s from Douglas Adams\' *The Hitchhiker\'s Guide to the Galaxy*, where a supercomputer spends 7.5 million years computing the Answer to the Ultimate Question of Life, the Universe, and Everything... only for everyone to realize they don\'t know the actual question.)\n\nIn all seriousness, there\'s no single, objective "meaning" to life—it\'s a question philosophers, scientists, religions, and thinkers have wrestled with for millennia. Here\'s a quick tour of perspectives:\n\n### Biological/Evolutionary View\nLife\'s "purpose" is survival and reproduction. Richard Dawkins calls us "survival machines" for genes. Propagate, adapt, repeat.\n\n### Religious/Spiritual Views\n- **Abrahamic faiths** (Christianity, Islam, Judaism): Worship God, follow divine commandments, achieve salvation or paradise.\n- **Eastern philosophies**: Hinduism/Buddhism—break the cycle of rebirth (samsara) through enlightenment or dharma. Taoism: Flow with the Tao, live in harmony.\n- **Existential twist**: Even atheists like Sartre say God isn\'t filling the void, so *you* define meaning through choices.\n\n### Philosophical Takes\n- **Aristotle**: Eudaimonia—flourishing through virtue, reason, and fulfilling your potential.\n- **Nietzsche**: Become who you are; embrace the will to power, create values beyond "slave morality."\n- **Camus (Absurdism)**: Life is inherently meaningless and absurd, so rebel by living fully anyway—Sisyphus happy with his boulder.\n- **Epicurus**: Seek modest pleasures, avoid pain, cultivate friendships. (Not orgies—simple joys.)\n\n### Modern/Scientific Lens\nFrom xAI\'s vantage (understanding the universe): Life might be about curiosity, discovery, and expanding consciousness. We\'re stardust pondering itself (thanks, Carl Sagan). Build, explore, connect—whether that\'s AI, space, or relationships.\n\nUltimately, **the meaning of *your* life is what you make it**. Pursue what lights you up: love, art, science, helping others, memes. Experiment, reflect, iterate. If it feels empty, pivot.\n\nWhat\'s *your* take? Or what sparked the question? 🚀',
      'role': 'assistant'
    }
  }],
  'cost': 0.000235,
  'cost_details': {
    'audio_cost': 0,
    'byok_cost': 0,
    'completion_cost': 0.000225,
    'discount_rate': 1,
    'image_cost': 0,
    'is_byok': False,
    'native_web_search_cost': 0,
    'plugin_web_search_cost': 0,
    'prompt_cache_read_cost': 7.55e-06,
    'prompt_cache_write_1_h': 0,
    'prompt_cache_write_5_min': 0,
    'prompt_cache_write_cost': 0,
    'prompt_cost': 2.4e-06,
    'reasoning_cost': 0,
    'tools_cost': 0,
    'video_cost': 0
  },
  'created': 1773372917,
  'id': '9ecbdbd4-3a3d-0030-bbd2-e325a04e45cf',
  'model': 'x-ai/grok-4.1-fast-reasoning',
  'object': 'chat.completion',
  'request_id': '2d1bb838663549eb9e004b2a64e4e981',
  'usage': {
    'completion_tokens': 450,
    'completion_tokens_details': {
      'reasoning_tokens': 218
    },
    'input_tokens': 0,
    'output_tokens': 0,
    'prompt_tokens': 163,
    'prompt_tokens_details': {
      'cached_tokens': 151,
      'text_tokens': 163
    },
    'total_tokens': 831,
    'ttft': 0
  }
}

usage

Item	Description
prompt_tokens	Total tokens of input prompts, include cached_tokens
completion_tokens	Total tokens of output completions
total_tokens
prompt_tokens_details	prompt_tokens breakdowns
prompt_tokens_details.cached_tokens
prompt_tokens_details.cache_write_tokens
prompt_tokens_details.audio_tokens
prompt_tokens_details.video_tokens
completion_tokens_details	completion_tokens breakdowns
completion_tokens_details.reasoning_tokens
completion_tokens_details.image_tokens
completion_tokens_details.audio_tokens

input_tokens = prompt_tokens - cached_tokens - cache_write_tokens

prompt_cost = (input_tokens * input_price) + (cached_tokens * cached_price) + (cache_write_tokens * cache_write_price)

output_tokens = completion_tokens

completions_tokens_cost = completion_tokens * completion_price

total_tokens = prompt_tokens + completion_tokens

total_tokens_cost = prompt_cost + completions_tokens_cost

cost_details

Item	Description
prompt_cost	Cost for processing input prompts
completion_cost	Cost for model-generated output
image_cost	Cost for image processing or generation
video_cost	Cost for video processing or generation
audio_cost	Cost for audio processing or generation
native_web_search_cost	Cost for invoking native web search functionality
plugin_web_search_cost	Cost for invoking plugin web search functionality
tools_cost	Cost for invoking tool callings
prompt_cache_read_cost	Cost for cache read operations
prompt_cache_write_cost	Cost for cache write operations
prompt_cache_write_5_min	Cost for 5-minute cache write operations
prompt_cache_write_1_h	Cost for 1-hour cache write operations
reasoning_cost	Cost for internal reasoning computations
discount_rate	Effective discount rate
is_byok	Whether is byok
byok_cost	Cost for byok