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OpenAI’s new GPT 4.1 coding model is insane — even destroys 4.5

Wow this is incredible

Author

Tari Ibaba
April 16, 2025

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Wow this is incredible.

OpenAI’s new GPT 4.1 model blows almost every other model out of the water — including GPT 4.5 (terrible naming I know).

It’s not even close — just look at what GPT 4o and GPT 4.1 produced for the exact same prompt:

❌ Before: GPT 4o

Prompt:

Make a flashcard web application.

The user should be able to create flashcards, search through their existing flashcards, review flashcards, and see statistics on flashcards reviewed.

Preload ten cards containing a Hindi word or phrase and its English translation.

Review interface: In the review interface, clicking or pressing Space should flip the card with a smooth 3-D animation to reveal the translation. Pressing the arrow keys should navigate through cards.

Search interface: The search bar should dynamically provide a list of results as the user types in a query.

Statistics interface: The stats page should show a graph of the number of cards the user has reviewed, and the percentage they have gotten correct.

Create cards interface: The create cards page should allow the user to specify the front and back of a flashcard and add to the user’s collection. Each of these interfaces should be accessible in the sidebar. Generate a single page React app (put all styles inline).

✅ Now look at what GPT 4.1 produced for the same prompt:

The 4.1 version is just way better in every way:

  • ✅ Cleaner and more intuitive inputs

  • ✅ Better feedback with the user

  • ✅ Polished UI with icons and color

It’s a massive improvement — which is why IDEs like Windsurf and Cursor quickly added GPT 4.1 support just a few hours after its release.

Major GPT-4.1

GPT 4.1 has a breakthrough 1 million token context window.

Way higher than the previous 128,000 token limit GPT 4o could handle.

So now the model can process and understand much larger inputs:

  • Extensive documents

  • Complex codebases — leading to even more powerful coding agents

GPT 4.1 will digest the content well enough to focus on the relevant information and disregard any distractions.

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Best,
Tari Ibaba
The Coding Beauty team