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Model Release

The Builder's Guide to GPT‑5.6

Learn how startups use GPT-5.6 to build faster, more cost-efficient AI agent with smarter model selection and new Responses API capabilities.

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Referenced Coverage & Sources

3 Sources Combined
OpenAI introduces 'Ultrafast,' a new mode that makes GPT-5.6 Sol work at 14x the speed
TechCrunch AIAug 13, 2026
The builder's guide to GPT‑5.6
OpenAI BlogAug 13, 2026
Previewing Ultrafast mode: GPT-5.6 Sol at up to 14X the speed
OpenAI BlogAug 13, 2026
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Technical & Market Glossary Definitions
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AI ConceptAgentic Systems

AI Agent

An AI Agent is an autonomous entity that perceives its environment through sensors (or inputs) and acts upon that environment using actuators (or tools) to achieve specific goals. An agent relies on a reasoning brain (typically an LLM) to plan and execute multi-step processes.

AI ConceptNeural Architectures

GPT

GPT (Generative Pre-trained Transformer) is a decoder-only autoregressive transformer architecture developed by OpenAI. It was pre-trained on massive text datasets to predict next words, pioneering the modern conversational AI era.

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