OpenAI

o4-mini Cost Calculator

Estimate your exact monthly API cost for o4-mini. Enter your token volume and see the math — OpenRouter vs Neureus side-by-side.

$0.99 Input /M (Neureus)

$3.96 Output /M (Neureus)

200K Context window

−10% vs OpenRouter

Published pricing

Input (OpenRouter) $1.10/M

Input (Neureus) $0.99/M

Output (OpenRouter) $4.40/M

Output (Neureus) $3.96/M

Monthly cost estimator

How much will o4-mini cost?

Input tokens / month

Output tokens / month

Standard cost (OpenRouter)

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N Neureus cost

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You save — per month with Neureus

Cost breakdown

Type	Volume	Rate (OpenRouter)	Total (OpenRouter)	Rate (Neureus)	Total (Neureus)
Input	—	$1.10/M	—	$0.99/M	—
Output	—	$4.40/M	—	$3.96/M	—
Total			—		—

Model details

Context window

200K tokens

Maximum combined input + output size per request

Max output

100K tokens

Maximum tokens in a single response

Modalities

text, vision, code

Input types supported by this model

Provider

OpenAI

Access this model through Neureus or directly

Efficient reasoning model optimized for STEM tasks. Exceptional performance on coding, math, and science at a fraction of the cost of o3.

Full model documentation →

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Use o4-mini for free.

Free tier includes 5M tokens — no credit card. Access o4-mini and 34 other models through one API key, priced 10% below OpenRouter.

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