OpenAI: GPT-5 mini (Fast)

openai/gpt-5-mini-fast · rates as of 2026-09-20 · Benchmarks · AI plans · Calculator

Small GPT-5 for responsive agents, coding help, and everyday automation

Cheapest input

$0.45

$/MTok · models.dev

Cheapest output

$3.60

$/MTok

Context

400K

tokens

Sources

1 listing

Sources

Same model, different sources. Our first-party rate is listed first, then router and aggregator rows stay separate so you can see the spread instead of a single blended number.

Source	Provider	Input	Output	Cache read	Context
models.devcheapestopenai/gpt-5-mini-fast	Vercel AI Gateway	$0.45	$3.60	$0.045	400K

Capabilities

Reasoning
Tool calling
Structured output
Attachments
In: text
In: image
In: pdf
Out: text

Knowledge cutoff: 2024-05-30Released: 2025-08-07Family: gpt-mini

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Data and list-price estimates may contain mistakes. Not investment advice.