GPT-5.5

Frontier

OpenAIChatgpt-5.5

OpenAI flagship. 1M context, adjustable reasoning effort, top-tier agentic work.

OpenAI flagship; adjustable reasoning effort (none→xhigh).

Capabilities

Tool callingVisionJSON modePrompt cache

Recommended for

general assistant
agentic workflows
long-context analysis

Using this model through Conduix

Call it by its id, or let a routing alias pick it as part of a governed, cross-provider chain with automatic failover.

Direct model idgpt-5.5

Reached by these routing aliases:

frontier-bestprimary pick · GPT-5.5 → Claude Opus 4.8 → Gemini 3.1 Pro
enterprisefallback #1 · Claude Opus 4.8 → GPT-5.5 → GPT-5.4
reasoning-bestfallback #1 · Claude Fable 5 → GPT-5.5 → DeepSeek V4 Pro
vision-bestfallback #1 · Gemini 3.1 Pro → GPT-5.5 → Claude Opus 4.8

Routing relationships are operational — chains adapt to provider availability and your org's policy — not a contractual guarantee that a specific model serves a given request.

Get started

Conduix is OpenAI-API-compatible — point any OpenAI SDK at https://api.conduix.ai/v1 and pass gpt-5.5 as the model.

from conduix import Conduix

client = Conduix(api_key="cx_live_YOUR_KEY")  # base URL is built in

response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{"role": "user", "content": "Hello, Conduix!"}],
)
print(response.choices[0].message.content)

Tool calling: Pass a tools array and the model calls your functions.
Vision: Accepts image inputs — add image_url parts to a message.
JSON mode: Set response_format for guaranteed-valid JSON output.
Prompt cache: Repeated prompt context is billed at a reduced rate.

The response's x-conduix-model-served header tells you exactly which model answered. See the quickstart for keys, headers, and usage.