GPT-5.5
Released by OpenAI in 2026, GPT-5.5 is an image-generation model. GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
by OpenAI · 1050K token context window
Best for
- image generation from text
- creative design and ideation
Ways to use GPT-5.5 in osFoundry
Connect with your own key (BYOK)
Open the key dialog and paste your OpenAI API key. osFoundry discovers GPT-5.5 automatically — assign it to a Maestro role (router, direct, orchestrator, or fallback) in the Pipeline tab and it is live in every chat. Your key, your provider account — no token markup.
Use it in a Room App
Room Apps declare AI features in their manifest, then call them with invokeAI:
import { invokeAI } from '@osfoundry/app-sdk'
// 'summarize' is an AI feature declared in your app manifest.
const result = await invokeAI('summarize', userText)
Call it from your own apps
Once a model is wired into your workspace you can host it as an API and reach it from your own services, scripts, or CI — outside osFoundry.
GPT-5.5 vs similar models
| Model | Org | Params | Context | Input price | Self-host |
|---|
| GPT-5.5 | OpenAI | — | 1050K | $ 5.00 /1M | API only |
| MiMo-V2.5 | Xiaomi | — | 1049K | $ 0.400 /1M | API only |
| Qwen3.6 27B | Qwen | — | 262K | $ 0.320 /1M | API only |
| Claude Opus Latest | Anthropic | — | 1000K | $ 5.00 /1M | API only |
Licence
Hosted — usage subject to provider terms — Hosted-only model — usage governed by the provider's API terms. Bring your own provider key.
No weights distributed; usage subject to provider terms.
Frequently asked about GPT-5.5
How much does GPT-5.5 cost?
GPT-5.5 is metered at $ 5.00 /1M for input, and $ 30.00 /1M for output. Bring your own OpenAI API key — osFoundry passes through provider pricing without markup.
Can I use GPT-5.5 commercially?
Commercial use is allowed with conditions. Hosted-only model — usage governed by the provider's API terms. Bring your own provider key. No weights distributed; usage subject to provider terms.
What is the context window of GPT-5.5?
GPT-5.5 supports a 1050K token context window.
Can I run GPT-5.5 locally?
No — GPT-5.5 is hosted only and accessed via the OpenAI API.
What is GPT-5.5 best at?
GPT-5.5 is well-suited to image generation from text, creative design and ideation.
How do I use GPT-5.5 in osFoundry?
Paste your OpenAI API key in the key dialog (or deploy the open weights for self-hostable models), assign GPT-5.5 to a Maestro role in the Pipeline tab, then use it in chat, Room Apps via invokeAI, or your own apps.
Published by OpenAI on April 24, 2026. Source: https://openrouter.ai/openai/gpt-5.5