Every price as published, on the date shown, in the linked document. Nothing here is second-hand.

OpenAI API has 3 public contract lines, and costs from $0.05 per 1M input tokens, across 13 prices from 4 sources, newest Sep 2026. Public bodies have signed 3 contracts, $1 to $95,001.

Contract lines
3
Prices
13
Sources
4
Pricing units
1
Newest
Sep 2026

How much does OpenAI API cost?

OpenAI API contract prices, per line, from public procurement records.

3 awards to 3 buyers · $131,452 in total
BuyerProductTermAmountSource
Federal Communications Commission24 Feb 2026ChatGPT Enterprise7 mo$1totalUSAspending
National Gallery of Art11 Sep 2025ChatGPT Enterprise11 mo$95,001totalUSAspending
Agency for International Development (USAID)20 Dec 2024ChatGPT Enterprise—$36,450totalUSAspending

OpenAI API list prices

OpenAI API contract totals · 10 prices · newest Sep 2026
ProductPrice as statedEvidenceSource
GPT-5-Nano$0.05 totalList pricedevelopers.openai.com
GPT-5-Mini$0.25 totalList pricedevelopers.openai.com
GPT-5-Nano$0.40 totalList pricedevelopers.openai.com
GPT-5-Mini$2 totalList pricedevelopers.openai.com
GPT-5.5$5 totalList pricedevelopers.openai.com
GPT-6 Astra$10 totalList pricedevelopers.openai.com
O1$15 totalList pricedevelopers.openai.com
GPT-5.5$30 totalList pricedevelopers.openai.com
GPT-6 Astra$50 totalList pricedevelopers.openai.com
O1$60 totalList pricedevelopers.openai.com

OpenAI API pricing model

OpenAI charges per million tokens of input and output for each API call. Different models have different rates.

  • per 1M input tokens
  • per 1M output tokens

OpenAI API pricing questions

What do public bodies pay for OpenAI API?

3 contract lines for OpenAI API, across 3 contract vehicles and 3 named buyers. The median contract runs to $36,450 a year. Each links to the record it came from.

How much does OpenAI API cost?

OpenAI API has 3 public contract lines, and costs from $0.05 per 1M input tokens, across 13 prices from 4 sources, newest Sep 2026. Public bodies have signed 3 contracts, $1 to $95,001.

Does OpenAI API publish pricing?

Yes. OpenAI API prices every tier it sells. Each price here is dated and linked to its source.

How is OpenAI API priced?

OpenAI API charges per 1M input tokens and per 1M output tokens.

Where do these OpenAI API prices come from?

From 4 primary documents on 2 domains, including usaspending.gov, developers.openai.com. Nothing from resellers, review sites or pricing aggregators.

OpenAI API pricing sources