gpt-5.4-nano· Released Mar 17, 2026

Name: gpt-5.4-nano
Brand: openai

openai/gpt-5.4-nano

GPT-5.4 nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports text and image inputs and is designed for low-latency...

Input

From$0.165/M

Output

From$1.03125/M

Context

Up to 400K

Max output

Up to 128K

Modalities

FileImageTextText

Input and output show the lowest price across upstreams, for reference. Your actual prices are listed per upstream below.

Upstreams & pricing

Upstream	Context	Max output	Input $/1M	Output $/1M	Cached input $/1M
Zenlayer AI Gateway-openai_compat (Global)From price	400K	128K	$0.165	$1.03125	$0.0165

Routed in real time — you pay the listed price of whichever upstream serves your call.

How to call

curlrequest.sh

curl https://api.tkex.ai/v1/chat/completions \
  -H "Authorization: Bearer $TX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4-nano",
    "messages": [
      {"role": "user", "content": "Say hello in five words."}
    ]
  }'