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OpenAI plans to phase out GPT-4.5, its largest-ever AI model, from its API

OpenAI plans to phase out GPT-4.5, its largest-ever AI model, from its API

April 23, 2025
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OpenAI plans to phase out GPT-4.5, its largest-ever AI model, from its API

On Monday, OpenAI announced that it will soon discontinue the availability of GPT-4.5 through its API. This massive AI model, which was only released at the end of February, will no longer be accessible to developers after July 14. They'll need to switch to another model from OpenAI's lineup, with the newly launched GPT-4.1 being recommended as the go-to alternative.

According to an OpenAI spokesperson who spoke to TechCrunch via email, "GPT-4.1 offers similar or improved performance compared to GPT-4.5 in key areas, but at a much lower cost." The company also stated its intention to phase out GPT-4.5 in order to focus on developing future models.

It's important to note that while GPT-4.5 will be removed from the API, it will still be accessible in ChatGPT for paying customers in a research preview mode. The model, code-named Orion, was trained with unprecedented amounts of computing power and data. It surpasses its predecessor, GPT-4o, particularly in writing and persuasiveness. However, despite its impressive scale, GPT-4.5 doesn't quite reach the "frontier level" on various industry benchmarks.

OpenAI has also acknowledged that running GPT-4.5 is incredibly costly. Back in February, they hinted at potential long-term limitations on its availability through the API due to these costs. The pricing for GPT-4.5 reflects this, coming in at $75 per million input tokens (about 750,000 words) and $150 per million output tokens, making it one of the priciest options in OpenAI's suite of models.

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Comments (17)
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BillyEvans
BillyEvans September 28, 2025 at 10:30:32 PM EDT

Qué rápido cambian las cosas en IA 😅. GPT-4.5 ni siquiera llegó a cumplir medio año y ya lo retiran. Me pregunto si esto significa que OpenAI tiene algo aún más potente preparado, o simplemente el modelo no cumplió sus expectativas. De cualquier forma, da un poco de miedo lo rápido que quedan obsoletos estos modelos.

KevinGarcia
KevinGarcia August 19, 2025 at 1:00:59 AM EDT

Wow, OpenAI is already sunsetting GPT-4.5? That’s wild—feels like it just dropped! Curious to see what developers pivot to next. 😎

JackMartin
JackMartin April 24, 2025 at 10:49:23 AM EDT

OpenAIがGPT-4.5をAPIから削除するって聞いてびっくり!😱 自分の技術からこんなに早く離れるなんて信じられない。ようやく慣れてきたのに、また新しいモデルに切り替えないといけないんだ。新しいのが期待できるといいけどね!🤞

FrankSmith
FrankSmith April 24, 2025 at 6:44:43 AM EDT

Me siento un poco decepcionado de que OpenAI vaya a eliminar el GPT-4.5 tan pronto. Apenas empecé a usarlo y estaba bastante bien. Ahora tengo que cambiar a otro modelo y aprender todo de nuevo. ¿Por qué no pueden mantenerlo un poco más? 😕

AlbertRodriguez
AlbertRodriguez April 24, 2025 at 2:37:05 AM EDT

Fiquei meio chateado que a OpenAI vai descontinuar o GPT-4.5 tão cedo. Acabei de começar a usar e estava bem bom! Agora tenho que mudar para outro modelo e aprender tudo de novo. Por que não podem mantê-lo por mais tempo? 😕

CarlJones
CarlJones April 23, 2025 at 7:54:30 PM EDT

OpenAI इतनी जल्दी GPT-4.5 को बंद करने जा रहा है, इससे मुझे थोड़ा निराशा हुई। मैंने इसका उपयोग शुरू ही किया था और यह काफी अच्छा था! अब मुझे दूसरे मॉडल पर स्विच करना होगा और फिर से सब कुछ सीखना होगा। क्या वे इसे थोड़ी देर और नहीं रख सकते? 😕

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