GPT-5.3 Codex vs GPT-5.4 mini: API price and specs

GPT-5.4 mini is 73% cheaper than GPT-5.3 Codex on input price.

GPT-5.4 mini is 80% cheaper than GPT-5.3 Codex on output price.

GPT-5.4 mini is 77% cheaper than GPT-5.3 Codex on a 1M-in / 200k-out workload.

Field	GPT-5.3 Codex	GPT-5.4 mini
Lowest input, per 1M	$1.40 +273.3%	$0.38
Median input, per 1M	$1.75 +133.3%	$0.75
Lowest output, per 1M	$11.20 +397.8%	$2.25
Median output, per 1M	$14.00 +211.1%	$4.50
Lowest unit price	—	$0.001 / request
Cost of 1M in + 200k out	$3.64 +341.2%	$0.82
Context	400K	400K
Max output	128K	128K
Providers	22 +18.5%	27
Regions	GLOBAL, US	EU, GLOBAL, US
Accepts	application/pdf, file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text	file, image, image/gif, image/jpeg, image/png, image/webp, pdf, text
Returns	text	image, text
Type	Text models	Text models
Free option	no	no
Cheapest provider	cometapi	openrouter

Your own workload: how many tokens the model gets (input) and gives back (output) - for example, in a month. The "Cost" row of the table above is recalculated for these numbers, for each model.

Computed from current offers each time the page opens; the best value of a row is bold, the percent is how far behind the best.

Providers selling both

abacus, aihubmix, aiml, azure, cometapi, digitalocean, edenai, fastrouter, freemodel, github-copilot, impossibl, jiekou, kilo, ofox, openai, opencode, openrouter, orcarouter, poe, requesty, vercel, zenmux

Frequently asked questions

Which is cheaper, GPT-5.3 Codex or GPT-5.4 mini?

GPT-5.4 mini is 73% cheaper than GPT-5.3 Codex on input price. GPT-5.4 mini is 80% cheaper than GPT-5.3 Codex on output price. GPT-5.4 mini is 77% cheaper than GPT-5.3 Codex on a 1M-in / 200k-out workload.

Which has the larger context, GPT-5.3 Codex or GPT-5.4 mini?

GPT-5.3 Codex: 400K tokens; GPT-5.4 mini: 400K tokens.

Where can I use both GPT-5.3 Codex and GPT-5.4 mini?