Reasoning focus
GPT-5.5 is built with a focus on reasoning quality.
Ask and write
The most capable GPT-5 series model with the highest reasoning quality.
Opens the Agent studio with GPT-5.5 ready to use. You will need a free account to run it.


What it makes
Ask and write
Answers questions and writes text in a conversation.
What you need
What you get
A written reply
GPT-5.5 is a text generation model in the GPT-5 series. Send it a message and it answers in writing. It is built with a focus on reasoning quality.
You provide a message in the Prompt box (the hint reads Enter Your Message). That is the one field to fill in. You get the answer as text.
GPT-5 Chat, GPT-5 Mini and GPT-5 Nano also belong to the GPT-5 line and use the same message box. GPT-5.5 costs about 150 credits per run.
Same job: ask and write. Compare before you choose.
Smallest and fastest GPT-5 model optimized for low-cost text generation and lightweight tasks.
Faster and cheaper version of GPT-4 optimized for production workloads.
Advanced GPT-5.4 model delivering strong reasoning and coding performance.
Latest chat-focused version of GPT-5.2. Supports image input, tool calling and reasoning. Context window of 128,000 tokens; replies up to 16,384 tokens.
GPT-5.5 is built with a focus on reasoning quality.
You type a message and get the answer back as text.
Choose GPT-5.5 from the text generation models.
Write the question or problem in the Prompt box.
The answer appears as written text once you send it.
List your options in the message and ask for the pros and cons.
Describe what you want to achieve and ask for the steps in writing.
Name a subject you want to understand and ask for a written explanation.
Quick answers to help you get the most out of GPT-5.5 in FunAI Studio.