Estimates assume medium reasoning effort, no batch discounts and no prompt caching. Turn on
prompt caching and the input side typically drops 50–90% —
run your own mix in the free calculator preloaded with o1.
About this page
Prices were last verified on August 20, 2026 against OpenAI's official pricing page. Providers reprice
frequently — see our methodology for exactly how estimates are computed,
and always confirm final rates with the provider before budgeting.
o1 FAQ
How much does o1 cost?
o1 charges $15 per million input tokens and $60 per million output tokens, with cached input reads at $7.50/M. Batch mode cuts both rates by 50% for asynchronous workloads.
What is the context window of o1?
o1 supports a context window of 200,000 tokens (200K) — roughly 150,000 English words or about 300 pages of text in a single request.
Does o1 support images, audio or reasoning?
o1 offers vision & image understanding, hidden reasoning tokens. Reasoning model — hidden chain-of-thought tokens are charged as output.
How do I estimate my o1 bill?
A typical workload of 10K input and 2K output tokens costs about $0.3900 per call with o1. At 1,000 requests per day that is roughly $11870.63 per month. Use the free AITokenCalculator to run your exact numbers.
