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o4-mini

OpenAI

Fast, efficient reasoning model optimized for STEM and coding tasks

Input price$1.10 / 1M tokens
Output price$4.40 / 1M tokens
Context window200k tokens
Last updated2026-04-20

Quick calculator

tokens
tokens
req/day
Per request
$0.003300
Daily
$33.00
Monthly
$990.00
per month · 30-day estimate
Yearly
$12,045.00

Tips to reduce cost

  • Use prompt caching to reuse repeated system prompts
  • Trim whitespace and reduce verbose instructions
  • Use a smaller model for classification or routing tasks
  • Batch async requests to get 50% discount (OpenAI/Anthropic)
  • Cache identical requests at the application layer

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