AI Model

OpenAI: GPT-4.5 (Preview)

OpenAI: GPT-4.5 (Preview) logoOpenAI
Text Generation
Vision
About GPT-4.5 (Preview)

GPT-4.5 (Preview) is a research preview of OpenAI’s latest language model, designed to advance capabilities in reasoning, creativity, and multi-turn conversation. It builds on previous iterations with improvements in world knowledge, contextual coherence, and the ability to follow user intent more effectively.

The model demonstrates enhanced performance in tasks that require open-ended thinking, problem-solving, and communication. Early testing suggests it is better at generating nuanced responses, maintaining long-context coherence, and reducing hallucinations compared to earlier versions.

This research preview is intended to help evaluate GPT-4.5’s strengths and limitations in real-world use cases as OpenAI continues to refine and develop future models. Read more at the [blog post here.](https://openai.com/index/introducing-gpt-4-5/)

Specifications
Provider
OpenAI
Context Length
128,000 tokens
Input Types
text, image
Output Types
text
Category
GPT
Added
2/27/2025
Comparison with GPT-4o (extended)
Specification
GPT-4o (extended)
Previous
GPT-4.5 (Preview)
Current
Change
Context Window128K128K
Reasoning Support
Input Typestext, image, filetext, image
Output Typestexttext

Frequently Asked Questions

Common questions about GPT-4.5 (Preview)

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