GPT Series by OpenAI
The GPT Series is OpenAI’s flagship family of large language models, designed for advanced text generation, multimodal interaction, reasoning, and coding. It includes both general-purpose and reasoning-specialized models, with recent versions like GPT-4.5 ("Orion") and o4 Mini bridging the gap between traditional LLMs and agentic AI. OpenAI continues to push boundaries with real-time multimodal capabilities and integrations for enterprise use, including e-commerce platforms like Shopify.
Current Models in the GPT Series:
GPT-3: The foundational 175B parameter model that set the stage for mainstream LLM adoption.
GPT-3.5: An improved variant with stronger instruction-following, powering ChatGPT’s free tier.
GPT-4: Advanced multimodal model supporting text and images, with 32k token context capabilities.
GPT-4 Turbo: Optimized for speed and cost, ideal for RAG and enterprise deployment.
GPT-4o ("Omni"): Real-time multimodal model supporting text, vision, and voice inputs in a unified context.
GPT-4o Mini: A lighter version of 4o for faster, more cost-efficient responses.
GPT-4.5 ("Orion"): Introduced in 2025, this model offers a 128k-token window and enhanced reasoning.
o-Series Models (Integrated into GPT Ecosystem):
o1: Reasoning-first model for mathematics, science, and logic-based tasks.
o3: Advanced reasoning model for engineering, research, and coding workflows.
o3 Mini: Lightweight version of o3 balancing cost and reasoning ability.
o4 Mini: Compact next-gen model with improved inference speed and reasoning, optimized for agentic tasks and low-latency environments.
Key Attributes:
Multimodal Capabilities: Process and generate across text, images, voice, and video (e.g., GPT-4o).
Advanced Reasoning: Features from the o-Series such as Process Reward Models (PRM) enhance logic, chain-of-thought reasoning, and self-correction.
Extended Context Windows: Handle up to 128k tokens (GPT-4.5) and millions of characters in real-world applications.
Custom AI Agents: Businesses can now build domain-specific, memory-enhanced GPTs using OpenAI’s GPT Builder with custom instructions and uploaded files.
Tool Integration: GPTs can autonomously call external tools (e.g., web, code, calculator, image generation).
Business Tool Integration: Available via API for real-time deployment in platforms like Shopify, SAP, and Microsoft, enabling smart automation in e-commerce and productivity environments.
Enterprise-Ready Deployment: Available through Azure OpenAI, ChatGPT Team/Enterprise, and API platforms.
Example Use Cases:
Automating multilingual customer support with real-time voice and chat via GPT-4o.
Solving STEM problems with detailed step-by-step reasoning using o3 or o4 Mini.
Generating dynamic, branded product descriptions in Shopify via GPT API integration.
Creating intelligent RAG-based research assistants using GPT-4 Turbo or GPT-4.5.
Powering low-latency AI assistants in mobile apps and embedded systems with GPT-4o Mini or o4 Mini.
Developing internal knowledge bots using memory-enabled GPTs with uploaded company documentation.