GPT-5.4 Pro
Vendor keyGPT-5.4 Pro is the version of GPT-5.4 that uses more compute to think harder and provide consistently better answers. It is available in the Responses API only, and reasoning effort supports medium, which is the default, plus high and xhigh. Some requests may take several minutes to finish.
The real OpenAI model
Same weights, same API, same answers. We change only how you pay for it: one key for every maker, one bill, no separate account to open. Every figure on this page comes from OpenAI’s own page — check it.
Maker's own pagePrice
per 1M tokens
Input
Output
$30.00
$180.00
Context
1,050,000
up to 128,000 out
Modalities
Released
Mar 5, 2026
Knows up to Aug 31, 2025
What it would cost you
1000 tokens is roughly 750 English words.
Where this model runs
Similar models
Models built for the same kind of work, at a similar price.
We do not mark up the price of tokens. It is the same price the provider charges. We earn on the top-up fee.
Use it from your code
from openai import OpenAI
# Works with the official openai package (pip install openai)
client = OpenAI(
base_url="https://api.flintbeam.com/v1",
api_key="sk-live-your-api-key"
)
response = client.chat.completions.create(
model="openai/gpt-5.4-pro",
messages=[
{"role": "system", "content": "You are an experienced software engineer."},
{"role": "user", "content": "Describe the architecture of a distributed cache."}
],
temperature=0.7,
max_tokens=1500
)
print(response.choices[0].message.content)