What is OpenAI: GPT-5.4 Mini's context window?

OpenAI: GPT-5.4 Mini supports a context window of 400,000 tokens, allowing you to process large documents and maintain long conversations.

How to use OpenAI: GPT-5.4 Mini API via Ofox?

Simply set your base URL to https://api.ofox.io/v1 and use your Ofox API key. The API is OpenAI-compatible — just change the base URL and API key in your existing code.

OpenAI: GPT-5.4 Mini

Name: OpenAI: GPT-5.4 Mini
Brand: openai
Price: 0.75 USD
Availability: InStock
Rating: 5 (1 reviews)

Chat-20%

openai/gpt-5.4-mini

Compare Try in Playground Get Started

GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong performance across reasoning, coding, and tool use, while reducing latency and cost for large-scale deployments.

Context Window

400K

Max Output Tokens

128K

Released

2026-03-17

Capabilities

VisionFunction CallingReasoningPrompt CachingWeb Search

Available Providers

Azure

Supported Protocols

openaianthropic

Providers

Azure

-20%

Input Tokens

$0.6/M

$0.75/M

Output Tokens

$3.6/M

$4.5/M

Cache Read

$0.06/M

$0.075/M

Output Image

$32/M

Web Search

$0.035/R

Protocols

openai/v1/chat/completions/v1/responses

anthropic

Playground

Open in OfoxChat

Chat with this model right here.

Conversations live only in this page and are never stored.

Conversations are not saved — leaving or refreshing this page clears them.

Code Examples

from openai import OpenAI

client = OpenAI(
    base_url="https://api.ofox.io/v1",
    api_key="YOUR_OFOX_API_KEY",
)

response = client.chat.completions.create(
    model="openai/gpt-5.4-mini",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

print(response.choices[0].message.content)

Uptime & Status

Benchmarks

LMArena ↗Evaluated as gpt-5.4-mini-high

OpenAI: GPT-5.4 Mini scores 1449 in the Overall category of the LMArena text leaderboard (style control), ranking #52 of 374 models based on 54,135 human preference votes (updated 2026-07-12).

Benchmark scores for gpt-5.4-mini-high on LMArena
Category	Arena Score	95% CI	Rank	Votes
Overall	1449	1445–1453	#52 of 374	54,135
Hard Prompts	1472	1467–1476	#54 of 374	35,202
Coding	1497	1491–1503	#56 of 369	14,703
Math	1439	1428–1451	#60 of 362	2,926
Creative Writing	1404	1397–1412	#74 of 372	8,849
Instruction Following	1436	1430–1442	#56 of 374	18,015
Chinese	1481	1468–1493	#65 of 344	2,817

Source: LMArena · CC BY 4.0 · Updated 2026-07-12 · Methodology ↗ · Ranks compare models within each category of the LMArena text leaderboard (style control). Scores come from third-party human preference evaluations, not from OFOX.