What is GPT-5 Mini's context window?

GPT-5 Mini supports a context window of 256,000 tokens, allowing you to process large documents and maintain long conversations.

How to use GPT-5 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.

GPT-5 Mini

Name: GPT-5 Mini
Brand: openai
Price: 0.25 USD
Availability: InStock

Chat-20%

openai/gpt-5-mini

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GPT-5 Mini is OpenAI's cost-effective GPT-5 variant, released on 2025-08-07 and tuned for balanced everyday performance at a fraction of the flagship price. It supports vision, audio input, tool use (function calling), and prompt caching, covering most general-purpose workloads: images and recordings can be passed in directly, while prompt caching keeps repeated system prompts inexpensive across turns. Context: 256K tokens, output: 32K. Accessible via the OpenAI-compatible protocol.

Context Window

256K

Max Output Tokens

33K

Released

2025-08-07

Capabilities

VisionFunction CallingPrompt CachingAudio Input

Available Providers

Azure

Supported Protocols

openai

Providers

Azureprovider.type: "azure_foundry"

-20%

Input Tokens

$0.2/M

$0.25/M

Output Tokens

$1.6/M

$2/M

Cache Read

$0.024/M

$0.03/M

Output Image

$25.6/M

$32/M

Web Search

$0.035/R

Protocols

openai/v1/chat/completions/v1/responses

Playground

Open in OfoxChat

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-mini",
    messages=[
        {"role": "user", "content": "Hello!"}
    ],
)

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

Benchmarks

LMArena ↗Evaluated as gpt-5-mini-high

GPT-5 Mini scores 1390 in the Overall category of the LMArena text leaderboard (style control), ranking #138 of 374 models based on 27,006 human preference votes (updated 2026-07-12).

Benchmark scores for gpt-5-mini-high on LMArena
Category	Arena Score	95% CI	Rank	Votes
Overall	1390	1385–1395	#138 of 374	27,006
Hard Prompts	1403	1397–1409	#146 of 374	12,804
Coding	1430	1422–1439	#148 of 369	5,495
Math	1405	1390–1421	#116 of 362	1,458
Creative Writing	1325	1315–1336	#171 of 372	3,557
Instruction Following	1374	1367–1382	#146 of 374	6,920
Chinese	1408	1391–1425	#141 of 344	1,343

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.