Billing & Credits Guide

OpenAI API

Advanced AI models for text, images, audio, and more. Powering the AI revolution.

What We Track

Validation

API key validity status

Models

Available models count

Organization

Organization ID

Rate Limits

RPM (requests) & TPM (tokens)

Key Format

Secret Keysk-...

Standard API key, starts with sk-

Pricing Overview

PlanPriceFeatures
Free (Prepaid)$5 credits
  • $5 initial credits
  • Limited rate limits
  • Access to most models
  • Community support
Pay-as-you-goFrom $0.075/1M input tokens
  • Higher rate limits
  • All models
  • Priority support
  • Organization management

Popular Models

GPT-4.5

Latest flagship model

GPT-4o

Multimodal flagship

GPT-4o mini

Fast & affordable

o3

Advanced reasoning

o4-mini

Fast reasoning

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