o1-mini Pricing & Token Cost Calculator (128K context)

What o1-mini costs in practice

Workload	Cost / call	Cost @ 1K req/day
Light · 1K in / 300 out	$0.0037	$113.84/mo
Standard · 10K in / 2K out	$0.0286	$870.51/mo
Heavy · 100K in / 20K out	$0.2860	$8705.13/mo

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-mini.

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-mini FAQ

How much does o1-mini cost?

o1-mini charges $1.10 per million input tokens and $4.40 per million output tokens, with cached input reads at $0.55/M. Batch mode cuts both rates by 50% for asynchronous workloads.

What is the context window of o1-mini?

o1-mini supports a context window of 128,000 tokens (128K) — roughly 96,000 English words or about 192 pages of text in a single request.

Does o1-mini support images, audio or reasoning?

o1-mini offers hidden reasoning tokens. Faster, cheaper reasoning model.

How do I estimate my o1-mini bill?

A typical workload of 10K input and 2K output tokens costs about $0.0286 per call with o1-mini. At 1,000 requests per day that is roughly $870.51 per month. Use the free AITokenCalculator to run your exact numbers.