GPT‑4.5

Smarter and Faster GPT‑4-Class AI by OpenAI

What is GPT‑4.5?

‍ GPT‑4.5 is an advanced generative AI model developed by OpenAI, designed to bridge the gap between GPT‑4 and GPT‑5. While OpenAI has not officially released this model as a standalone version, “GPT‑4.5” is widely referred to in the AI community as the turbocharged variant of GPT‑4, used in premium ChatGPT (Pro) and via OpenAI’s API. It supports multimodal input, including text and images, and delivers faster, cheaper, and more context-aware responses than its predecessor.

With improvements in latency, reasoning, and instruction-following, GPT‑4.5 is ideal for developers and teams building next-gen chatbots, code assistants, and knowledge tools.

Key Features of GPT‑4.5

Improved Reasoning & Accuracy

More consistent performance in logic, planning, and multi-turn dialogue compared to GPT‑4.

Multimodal Support

Handles both text and image inputs, making it capable of visual reasoning and content understanding.

Faster & Cost-Efficient

Reduced latency and optimized token pricing, especially in ChatGPT and OpenAI's API usage.

Extended Context Window

Supports larger prompt lengths (up to 128K tokens), useful for documents, transcripts, and large codebases.

API-Friendly & Developer Ready

Seamlessly integrates into OpenAI tools like Assistants API, function calling, JSON mode, and streaming.

Ideal for Pro-Level Applications

Used in enterprise chatbots, educational platforms, internal copilots, and productivity tools.

Use Cases of GPT‑4.5

Deploy high-quality assistants that understand complex queries and documents in customer support or HR.

Build AI copilots for explaining, writing, and debugging code with better speed and fewer hallucinations.

Enable image-based queries, screenshot explanations, and multimodal task processing in apps.

Use GPT‑4.5 for summarizing, answering, or analyzing large texts such as books, legal files, or meeting notes.

Create tools that hold long conversations and maintain context across sessions with extended token capacity.

GPT‑4.5

vs

Other OpenAI Models

Feature	GPT-4.5	GPT-4 Turbo	GPT-4o	GPT-3.5 Turbo
Speed & Latency	Improved	Fast	Fastest	Very Fast
Image Input	Yes	Yes	Yes	No
Audio/Video Input	No	No	Yes (in apps)	No
Token Limit	Up to 128K	Up to 128K	Up to 128K	Up to 16K
Cost Efficiency	Moderate	Optimized	High	Cheapest
Best Use Case	Smart Assistants	Coding, Docs	Multimodal Agents	Lightweight Tasks