GPT-5.5

Every completed request debits project credits at these list rates. Failed requests are not billed.

On ATP

The same governance applies to every model on the gateway:

• Project API key — spend and revocation bound to one project
• Model allowlist — only enabled models may be called
• Credits — 1 USD = 100 credits, debited per completed request
• Per-request logs — model, key, project, credits for audit

Cost estimator

A list-price estimate for a month of traffic. Actual spend follows each completed request.

Quickstart

Point your existing SDK at the gateway and use a project key. Read the docs

from openai import OpenAI

client = OpenAI(
  base_url="https://api.atptoken.ai/v1",
  api_key="atp-•••"
)

r = client.chat.completions.create(
  model="gpt-5.5",
  messages=[{"role":"user","content":"hi"}],
)▍

Related models

FAQ

How much does GPT-5.5 cost on ATP Token?

List rates for GPT-5.5 (API id gpt-5.5): input $5.00 / output $30.00 per 1M tokens. Billing uses credits (1 USD = 100 credits), debited from the project balance per completed request. There is no monthly platform fee; see Pricing for the minimum top-up.

How do I call GPT-5.5 via API?

Create a project API key, enable the API id gpt-5.5 (not the display name) on that project’s allowlist, point an OpenAI-compatible SDK at https://api.atptoken.ai/v1, and set model to "gpt-5.5". See the Quickstart on this page and the docs.

What are the context and capabilities of GPT-5.5?

Capability flags (thinking, tools, vision) follow the gateway model catalog — treat the catalog visible to your key as operational truth. Context is shown only when we have a reliable source. Vendor: OpenAI.

Who can use GPT-5.5 on ATP?

Only models on a project’s allowlist can be called with that project’s key (match the API id). Organization → workspace → project governance, per-request logs, and credit budgets are managed in the ATP Console.