GPT-5.4 Mini
ChatNot available
Compact reasoning model with extended 400K context. Balanced cost-performance for reasoning tasks.
- Context
- 400Ktokens
- Max output
- 128Ktokens
- Latency
- ~10ms
- Released
- 2026-06
Pricing
$ / 1M tokensInput
$0.75/M
Output
$4.50/M
Cache Read
$0.075/M
Cache Write
$0.75/M
Capabilities
4 listed- Chat
- Tool Use
- Vision
- Coding
Code examples
POST /v1/chat/completionspython
from openai import OpenAI
client = OpenAI(
api_key="your_api_key",
base_url="https://api.modelstack.cc/v1",
)
response = client.chat.completions.create(
model="gpt-5.4-mini",
messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)Related models
Frequently asked questions
How is GPT-5.4 Mini billed on ModelStack?expand_more
ModelStack bills based on actual request usage. Input, output, cache, and any other applicable rates follow the live pricing table on this page. Final request costs are available in the console.
What are the context window and maximum output for GPT-5.4 Mini?expand_more
GPT-5.4 Mini has a 400K context window and supports up to 128K of output.
How can I call GPT-5.4 Mini through ModelStack?expand_more
Use the model ID `gpt-5.4-mini` with any OpenAI-compatible SDK pointed at the ModelStack API — see the code examples above for Python, Node.js, and cURL.
Which capabilities does GPT-5.4 Mini support?expand_more
GPT-5.4 Mini supports: Chat, Tool Use, Vision, Coding.