GPT-5.4 mini

By OpenAI, on GridPup at $0.91 per million input tokens and $5.43 per million output tokens, paid from your GridPup balance per request. No subscription.

Try it in the Playground Get an API key

Price

Made by: OpenAI
Input: $0.91 per million tokens
Output: $5.43 per million tokens
Context: 400K tokens
Can: Tools, Reasoning, Reads images

What it costs, roughly
A 1,000-word answer to a 200-word question	$0.0075
1,000 such answers	$7.48
Summarising a 50-page document (25,000 words) in 500 words	$0.034

Use it from your code

GridPup's API speaks OpenAI's format: use any OpenAI SDK with the base URL https://api.gridpup.com/v1/ai and a GridPup API key with Also use AI models. The answer tells you what it cost. More in the API docs.

from openai import OpenAI

client = OpenAI(base_url="https://api.gridpup.com/v1/ai", api_key="gp_live_…")

r = client.chat.completions.create(
    model="openai/gpt-5.4-mini",
    messages=[{"role": "user", "content": "Explain a KV cache in two sentences."}],
)
print(r.choices[0].message.content)
print("cost:", r.usage.cost_usd, "USD")

Questions

How much does GPT-5.4 mini cost?: $0.91 per million input tokens and $5.43 per million output tokens, charged per request from your prepaid balance. You need a small balance to start ($1 for most models); there is no monthly fee.
Who runs it?: OpenAI made GPT-5.4 mini. GridPup serves it through Cloudflare's AI Gateway, so you use it with one GridPup balance instead of an account with OpenAI.
Does it work with the OpenAI SDK?: Yes: set base_url to https://api.gridpup.com/v1/ai and the model to openai/gpt-5.4-mini.

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