o4-mini

OpenAI · Released Apr 2025

Cost-effective reasoning model with multimodal support. Replaced o3-mini at the same price point.

Strengths: Affordable reasoning with multimodal support.
Best for: Budget reasoning tasks and high-volume problem solving.
Limitations: Smaller reasoning model; less capable than the full o-series or GPT-5.5.

Input / 1M

$1.10

Output / 1M

$4.40

Cached input / 1M

$0.275

Context window

Price history

Effective	Input	Output	Cached in	Note	Source
16 Apr 2025	$1.10	$4.40	$0.275		openai.com/api/pricing

GPT-5.6 Luna

in $0.5 · out $3.00

GPT-5.6 Terra

in $1.25 · out $7.50

GPT-5.6 Sol

in $5.00 · out $30.00

GPT-5.5 Pro

in $30.00 · out $180.00

Data updated Jun 11, 2026 Report a problem