What it's the best tool for
- Native computer use at 75% OSWorld
- Up to 1M-token context via API
- Tool search cuts 47% tokens at equal accuracy
- Five reasoning-effort levels on demand
- Top pick for autonomous agents
When to reach for something else
- Pricier than Claude Sonnet 4.6 on long outputs
- Input price doubles above 272K tokens
- OpenAI content filters on sensitive topics
- High reasoning effort = high latency
How GPT-5.5 responds
GPT-5.5
Four scenarios where it pays for itself
More about GPT-5.5
GPT-5.5 Online — OpenAI's Flagship on NetRoom
GPT-5.5 is OpenAI's top model released in March 2026: native Computer Use (75% OSWorld), up to 1M token API context, five-level reasoning effort. Access it on NetRoom without VPN.
What you get
An agent that clicks real screens and fills real forms. Tool search that cuts 47% tokens at the same accuracy. Pricing sits well below last year's flagship tier for comparable quality.
Best fit
Complex code, autonomous agents, huge-context analysis, big PDF pipelines. For light chat, use GPT-5.4 Nano.
How to start
Sign up on NetRoom, top up in rubles, pick GPT-5.5. Ship.
Use GPT-5.5 via the API
The same engine, straight from your code: one key and one balance for text, images, video and sound. Pay only for the requests you make.
curl https://net-room.com/api/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "openai/gpt-5.5", "messages": [{"role": "user", "content": "Hello"}]}'The format is OpenAI SDK compatible — point base_url at https://net-room.com/api/v1 and use your NetRoom key.
The model id is already in the example. The full parameter reference and prices live in GET /api/v1/models and in the docs.
Try GPT-5.5
right now
Free access to basic models. No card, no obligations.