GPT-5.5 is OpenAI's frontier model from the generation preceding GPT-5.6, building on GPT-5.4's unified Codex and GPT architecture with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token context window (922K input, 128K output) with support for text and image inputs, enabling high-context reasoning, coding, and multimodal analysis within the same workflow. Designed as a strong default for both general-purpose tasks and software engineering, GPT-5.5 generates production-quality code, synthesizes information across multiple sources, and executes complex multi-step workflows with fewer iterations.
Capabilities
How to use
Tip: Give context and say what format you want the answer in.
What is PayPerQ?

PayPerQ is a pay-per-query AI service that gives you instant access to hundreds of chat, image, video, and audio AI models in one place. Unlike subscriptions that charge $20+/month, PPQ users pay only for what they use—averaging just $4 a month.
No monthly commitments. Privacy focused. Credit cards and all major cryptos accepted.
Why Use PayPerQ?
Getting Started
No account creation needed — just fund and go.