Is GPT-4o mini or OpenAI: GPT-5.3 Chat cheaper?

GPT-4o mini and OpenAI: GPT-5.3 Chat have comparable output pricing.

Which has the larger context window, GPT-4o mini or OpenAI: GPT-5.3 Chat?

OpenAI: GPT-5.3 Chat has the larger context window (128K tokens).

GPT-4o mini vs OpenAI: GPT-5.3 Chat

Both have similar output pricing, while OpenAI: GPT-5.3 Chat offers a larger context window. Choose GPT-4o mini or OpenAI: GPT-5.3 Chat based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-4o mini	OpenAI: GPT-5.3 Chat
Provider	OpenAI	OpenAI
Input / 1M tokens	—	$1.75
Output / 1M tokens	—	$14.00
Context window	—	128K
Parameters	—	—
Open weights	No	—
Released	Jul 2024	—

GPT-4o mini details →OpenAI: GPT-5.3 Chat details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.