o4-mini Cost Calculator

o4-mini is OpenAI's reasoning-focused model optimized for STEM, coding, and math. Chain-of-thought strong at a fraction of o-series flagship cost.

Input

$1.10

per 1M tokens

Output

$4.40

per 1M tokens

Context window

200K

tokens

Released

2025-04

Cutoff 2024-10

Model

✓ Exact tokenizer·$1.10 in·$4.40 out (per 1M)

Quick start with a use case

Input tokens

Output tokens

Total cost per call$0.003300

Input$0.001100

Output$0.002200

Cost comparison

Standard

$0.003300

With Caching

$0.002890

Save 12% ↓

With Batch

Not supported

Detailed pricing

o4-mini pricing breakdown

All pricing dimensions including caching and batch discounts.

Type	Price (per 1M tokens)	Note
Input	$1.1000	Standard input tokens
Output	$4.4000	Generated output tokens
Cached input	$0.2800	Reused prompt content

Last verified 2026-05-12 · OpenAI official pricing · ⚠️ Spotted a wrong price? Report in 30s →

How it compares

o4-mini vs alternatives

Single-call cost (1000 input + 500 output tokens) ranked from cheapest.

Model	Per call	vs o4-mini
o4-mini OpenAI · this page	$0.003300	—
DeepSeek V3.2 DeepSeek	$0.000480	−85%
GPT-5 mini OpenAI	$0.001250	−62%
Mistral Large 3 Mistral	$0.001250	−62%
Gemini 3 Flash Google	$0.002000	−39%
Claude Haiku 4.5 Anthropic	$0.003500	+6%

Recommended use

When to choose o4-mini

o4-mini shines for complex multi-step reasoning, code generation and review, mathematical problem-solving, and scientific research and analysis. Token counts on this page are exact via the official tokenizer.

✓Context window of 200K tokens handles long conversations and large documents.

✓Prompt caching available — significant savings for repeated system prompts.

✓Tool / function calling supported.

FAQ

Frequently asked questions

o4-mini costs $1.10 per 1M input tokens and $4.40 per 1M output tokens. A typical chat call (1000 input + 500 output tokens) costs approximately $0.0033. Use the calculator above to estimate your specific use case.