GPT-5.4 Mini

Available

An OpenAI model with a 400K-token context window, image input and tool calling. On the OpenAI API since March 17, 2026.

Access details: OpenAI API

An alias. The provider can point it at a newer version.

gpt-5.4-mini

Updated Sep 23, 2026

Sources & notes

Capabilities & limits

Context window: 400K
Maximum output: 128K
Image input: Supported
Tool calling: Supported
Structured output: Supported

Pricing

USD / 1M tokens

Input: $0.75
Output: $4.50

Standard rates per million tokens. Discounts and long-context rates, where offered, are on OpenAI's pricing page.

Full rate card 3 rates

All prices in USD.

Standard input

$0.75 per 1M tokens

Standard output

$4.50 per 1M tokens

Cached input

$0.075 per 1M tokens

Other tiers per 1M tokens (short context): Batch: $0.375 input / $2.25 output / $0.0375 cached; Flex: $0.375 input / $2.25 output / $0.0375 cached; Fast mode: $1.5 input / $9 output / $0.15 cached. Regional processing (data residency) endpoints add a 10% uplift.

Price history

Sep 23, 2026

Input $0.75 per million tokens

Sep 23, 2026

Output $4.50 per million tokens

Technical details

Parameters: Not published
Active parameters: Not published
Architecture: Not published
Training / knowledge cutoff: Aug 31, 2025
Input modalities: Text, image
Output modalities: Text

From OpenAI

Official announcement ↗

Release & lifecycle

First available: Mar 17, 2026
available: As of Sep 23, 2026