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

OpenAI: GPT-5.4 supports a context window of 1,050,000 tokens, allowing you to process large documents and maintain long conversations.

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

Simply set your base URL to https://api.ofox.ai/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

Name: OpenAI: GPT-5.4
Brand: openai
Price: 2.5 USD
Availability: InStock

Chat-20%

openai/gpt-5.4

Compare Try in Playground Get started

GPT-5.4 is OpenAI's frontier model, unifying the Codex and GPT lines into a single system. It takes text and image input for high-context reasoning, coding, and multimodal analysis, with improved document understanding, tool use, and instruction following — positioned as a strong default for both general-purpose work and software engineering, generating production-quality code and executing complex multi-step workflows with fewer iterations. Reasoning, prompt caching, and web search are supported. Context: 1M+ tokens (922K input), output: 128K. Available via OpenAI and Anthropic protocols.

Context Window

Max Output Tokens

128K

Released

2026-03-05

Capabilities

VisionFunction CallingReasoningPrompt CachingWeb Search

Available Providers

Azure

Supported Protocols

openaianthropic

Providers

Azureprovider.type: "azure_foundry"

-20%

Input Tokens

$2/M

$2.5/M

Output Tokens

$12/M

$15/M

Cache Read

$0.2/M

$0.25/M

Output Image

$25.6/M

$32/M

Web Search

$0.035/R

Protocols

openai/v1/chat/completions/v1/responses

anthropic

Playground

Open in OfoxChat

Code Examples

from openai import OpenAI

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

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

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

Uptime & Status

Benchmarks

LMArena ↗Evaluated as gpt-5.4

OpenAI: GPT-5.4 scores 1466 in the Overall category of the LMArena text leaderboard (style control), ranking #31 of 374 models based on 58,105 human preference votes (updated 2026-07-12).

Benchmark scores for gpt-5.4 on LMArena
Category	95% CI	Rank	Votes
Overall	1462–1470	#31 of 374	58,105
Hard Prompts	1483–1493	#30 of 374	37,873
Coding	1506–1519	#30 of 369	16,064
Math	1449–1471	#38 of 362	3,109
Creative Writing	1425–1440	#45 of 372	9,338
Instruction Following	1455–1467	#28 of 374	19,470
Chinese	1483–1507	#45 of 344	3,098

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.