OpenAI API Pricing Breakdown

OpenAI API Pricing Breakdown for All Models in 2026

Understanding OpenAI API pricing is essential for budgeting your AI projects. This comprehensive guide covers the cost per token for every major OpenAI model available in 2026, with practical tips for optimizing your spend.

How OpenAI Pricing Works

OpenAI charges per token, not per request. A token is roughly 4 characters or 0.75 words in English. Every API call has two cost components:

• Input tokens — The prompt you send (system message + user message + conversation history)
• Output tokens — The response the model generates

Output tokens are typically 2-4x more expensive than input tokens because they require more computation.

GPT-4o Models

GPT-4o is OpenAI's flagship multimodal model, offering the best balance of intelligence and cost:

• gpt-4o — $2.50 / 1M input tokens, $10.00 / 1M output tokens
• gpt-4o-mini — $0.15 / 1M input tokens, $0.60 / 1M output tokens
• gpt-4o-audio-preview — $2.50 / 1M input tokens (text), $100 / 1M input tokens (audio)

GPT-4 Turbo and GPT-4

• gpt-4-turbo — $10.00 / 1M input tokens, $30.00 / 1M output tokens
• gpt-4 — $30.00 / 1M input tokens, $60.00 / 1M output tokens

GPT-3.5 Turbo

• gpt-3.5-turbo — $0.50 / 1M input tokens, $1.50 / 1M output tokens

o1 and o3 Reasoning Models

The reasoning models use additional "thinking" tokens that are charged at the output rate:

• o3-mini — $1.10 / 1M input tokens, $4.40 / 1M output tokens
• o1 — $15.00 / 1M input tokens, $60.00 / 1M output tokens
• o1-mini — $3.00 / 1M input tokens, $12.00 / 1M output tokens

Embedding Models

• text-embedding-3-large — $0.13 / 1M tokens
• text-embedding-3-small — $0.02 / 1M tokens
• text-embedding-ada-002 — $0.10 / 1M tokens

Image Generation (DALL-E)

• DALL-E 3 HD (1024x1792) — $0.120 per image
• DALL-E 3 Standard (1024x1024) — $0.040 per image
• DALL-E 2 (1024x1024) — $0.020 per image

Cost Estimation Examples

Here are real-world cost estimates for common use cases:

• Customer support chatbot (500 msgs/day, ~800 tokens each with gpt-4o-mini) — ~$0.18/day
• Blog post generator (10 articles/day, ~2000 tokens each with gpt-4o) — ~$0.25/day
• Code assistant (100 queries/day, ~3000 tokens each with gpt-4o) — ~$3.75/day
• Document embedding (1M tokens/day with text-embedding-3-small) — ~$0.02/day

Cost Optimization Strategies

1. Choose the right model — Use gpt-4o-mini for simple tasks, gpt-4o for complex ones
2. Minimize context length — Trim conversation history and use concise system prompts
3. Set max_tokens — Prevent unexpectedly long (and expensive) responses
4. Cache responses — Store results for identical or similar queries
5. Use batch API — OpenAI offers 50% discount for asynchronous batch processing
6. Monitor usage daily — Set up alerts before you hit budget limits

# Check your current usage with Python
from openai import OpenAI

client = OpenAI(
    api_key="sk-your-key",
    base_url="https://claude4u.com/v1"
)

# Track tokens in each response
response = client.chat.completions.create(
    model="gpt-4o-mini",
    messages=[{"role": "user", "content": "Hello!"}],
    max_tokens=100
)

usage = response.usage
print(f"Input: {usage.prompt_tokens} tokens")
print(f"Output: {usage.completion_tokens} tokens")
print(f"Total: {usage.total_tokens} tokens")

Free Tier and Trial Credits

New OpenAI accounts may receive a limited amount of free API credits. However, these credits expire after a set period. For consistent, production-grade access without worrying about regional restrictions or credit expiration, consider using claude4u.com as your API gateway.