GPT-5 Image Mini: pricing, context and benchmarks

What you need to know about GPT-5 Image Mini

OpenAI, based in United States, put GPT-5 Image Mini online on October 16, 2025. It accepts files, images, and text as input and produces images and text. Its context window reaches 400,000 tokens, larger than 64 % of the models in the registry, and it can write up to 128,000 tokens in one go.

It has been available for about 12 months, long enough for its prices and scores to have settled.

GPT-5 Image Mini pricing

On OpenRouter, GPT-5 Image Mini costs $2.5 per million input tokens and $2 per million output tokens. Counting three tokens read for every token written, its average price is $2.375 per million, more expensive than 74 % of paid models (3.1 times the median of $0.76).

A concrete example: a task that sends 2,000 tokens (about 1,500 words) and receives a 500-token answer costs $0.006. At 1,000 tasks a day, budget $180 a month. The price calculator redoes this with your own volumes.

Tokens already sent and cached are billed at $0.25 per million.

Performance and benchmarks

Epoch AI does not yet publish a capabilities index for GPT-5 Image Mini. We therefore show no made-up performance rating: only price, context and features count towards its score.

Features, privacy and local use

• It does not support tool calling: it is not suited to driving an AI agent that has to act.
• It can answer in an enforced JSON format (structured outputs).
• It is a reasoning model: it "thinks" before answering, which helps on hard tasks but uses more output tokens.

Its weights are not published: it can only be used through the OpenAI API or a broker such as OpenRouter, which means sending your data off your machines.

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