Available through the OpenAI API with usage-based token pricing.
Standard API pricing per 1 million tokens:
Input: $2.50
Cached input: $0.25
Output: $15.00
Requests containing more than 272K input tokens are charged at 2× the standard input rate and 1.5× the standard output rate for the full request.
Cache writes are billed at 1.25× the uncached input-token rate.
GPT-5.6 Terra is available through the OpenAI API, Codex, and eligible ChatGPT Work experiences. Product availability and usage limits vary by plan.
Commercial usage is subject to OpenAI’s applicable service terms, API terms, and usage policies.
