OpenAI: GPT-5.5 Pro

Name: GPT-5.5 Pro
Brand: OpenAI
Price: 3148.5 RUB
Availability: InStock

openai/gpt-5.5-pro

textVisionFilesReasoning

OpenAI reasoning flagship — best quality on hard tasks, always reasons, 1M context, understands images and files.

Pricing

Request / 1M

Response / 1M

Parameters

messagesrequired

reasoning_effortmax

temperature0–2

max_tokensoptional

streamtrue · false

image_urlimage (data: URL)

filePDF · DOCX · TXT · CSV · XLSX · PPTX (data: URL)

How to use via API

from openai import OpenAI

client = OpenAI(base_url="https://api.mixen.ai/v1", api_key="mxn-...")
resp = client.chat.completions.create(
    model="openai/gpt-5.5-pro",
    messages=[{"role": "user", "content": "Привет"}],
    reasoning_effort="max",  # max
    temperature=0.7,
    max_tokens=1024,
    stream=False,
)
print(resp.choices[0].message.content)

# Стриминг: stream=True — ответ приходит чанками
for chunk in client.chat.completions.create(
    model="openai/gpt-5.5-pro",
    messages=[{"role": "user", "content": "Привет"}],
    stream=True,
):
    print(chunk.choices[0].delta.content or "", end="", flush=True)

Try in the botAPI docs

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