OpenAI

o1-mini

Public pricingMedium memoryDeep thinkingTool use

o1-mini is OpenAI's medium-memory model with deep reasoning, tool use. This page shows current pricing, an interactive cost calculator, and a side-by-side with similar models.

Input

$3.00/1M tokens

Output

$12.00/1M tokens

Cached

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Batch

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Interactive

Calculate your o1-mini bill.

Adjust the workload below and watch the monthly cost update in real time.

What would o1-mini cost you?

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1,00010,00050,000250,0001M10M

Technical specifications

o1-mini at a glance.

Memory

128,000

tokens

Max reply

32,768

tokens

Memory tier

Medium

a long report or a codebase file

Tokenizer

tiktoken-o200k

Released

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Training cutoff

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Availability

Public pricing

Status

active

What it can do

Capabilities & limits.

  • Understands images
  • Deep step-by-step thinking
  • Uses tools / calls functions
  • Strict JSON output
  • Streams replies
  • Fine-tunable on your data

When to pick o1-mini

  • Multi-step reasoning, research agents, or hard math.
  • Agentic workflows that call tools or APIs.

When to look elsewhere

  • Your workload involves images — pick a vision-capable model instead.

Alternatives

Similar models to compare.

FAQ

o1-mini — the questions we see most.

Pricing, capabilities, alternatives — generated from the same data that powers the calculator above.

Get instant answers from our AI agent

At a typical workload of 50,000 conversations a month with 1,500-token prompts and 800-token replies, o1-mini costs roughly $705 per month. Input is $3.00 /1M tokens and output is $12.00 /1M tokens.
o1-mini has a 128,000-token context window (medium memory — a long report or a codebase file). That means you can fit about 24,000 words of input and history in a single call.
Beyond text generation, o1-mini supports deep step-by-step reasoning, calling functions / tools, strict JSON output. It streams replies by default.
Models in a similar class include GPT-5, GPT-5.1, o3-mini. The "Similar models" section below this FAQ links into each.

Still unsure?

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