Name: GPT-5.4 Codex API
Brand: OpenAI

Question 1

Who has the cheapest GPT-5.4 Codex API?

Accepted Answer

KIE AI offers the cheapest GPT-5.4 Codex API at $0.7/1M tokens (as of April 4, 2026). Inference Hub compares 2 providers.

Question 2

How much does the GPT-5.4 Codex API cost?

Accepted Answer

GPT-5.4 Codex API pricing ranges from $0.7 to $1.25 per 1M tokens across 2 providers, as of April 4, 2026.

Question 3

Is GPT-5.4 Codex open weight?

Accepted Answer

GPT-5.4 Codex is a proprietary model from OpenAI.

Provider	Input $/1M	Output $/1M	Context	Speed	TTFT	Status
KI KIE AI	$0.700 ●	$5.60	—	—	—	Live
MU Muapi	$1.25	$9.00	—	—	—	Live

GPT-5.4 Codex

Price Comparison