OpenAI API pricing calculator
GPT-5.4 Pricing Calculator: Input and Output Token Costs
Estimate prompt, response, cached input, and volume costs for GPT-5.4. Pricing verified 2026-06-25 from the provider source.
Quick estimate
No API key needed. Pick a model, paste your question, choose the answer length, and get a close cost estimate.
3. How long will the AI answer be?
Your estimate will appear here.
Paste a prompt, choose an answer length, and calculate.
Pricing table
Input: $2.5 per 1M tokens
Output: $15 per 1M tokens
Cached input: $0.25 per 1M tokens
Context window: 400,000 tokens
Example prompt costs
A 2,000 token prompt and 1,000 token answer costs about $0.020000 before tool add-ons.
Flagship short/long context pricing seed.
How much does GPT-5.4 cost per 1M input tokens?
GPT-5.4 is seeded at $2.5 per 1M input tokens for the standard tier.
How much does GPT-5.4 cost per 1M output tokens?
GPT-5.4 is seeded at $15 per 1M output tokens.
Does GPT-5.4 support cached input pricing?
Yes. The cached input seed price is $0.25 per 1M tokens.