GPT-4.5
Major release: A new general-purpose AI model from a leading lab, the kind behind ChatGPT, Claude or Gemini: a new flagship or generation.
Key facts
- Released
- Feb 27, 2025
- What it does
- Text and chat: Writes, answers questions and holds a conversation.Code: Writes, explains and fixes code.Thinks first: Can reason step by step before it answers: slower, but better at maths, code and tricky questions.Sees images: Understands pictures, screenshots and charts you share with it.
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- How
- For developers, through an API
- Announced as
- “Introducing GPT-4.5”
From trckr's archive of releases before it started watching. Date and details from Epoch AI's database of AI models (CC BY 4.0).
How it scores
From independent testers, never the lab's own claims.
- Chat answers, by people's votes#76 of 86
- Gemini 4 Carbon1,527
- 2Gemini 4 Argon1,522
- 75Gemini 2.5 Pro (Jun 2025)1,445
- 76GPT-4.51,445
- 77Qwen 3.6 Plus1,443
Source: LMArena · LMArena text, adjusted for style
Compare GPT-4.5 with
It came out 27 days after o3-mini, the lab's previous model.
The details
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