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Farewell to thinking mini model in chat gpt 5.1 😒

Users Disappointed | ChatGPT 5.1 Drops the Thinking Mini Model

By

Fatima Khan

Nov 13, 2025, 05:37 PM

Edited By

Dmitry Petrov

2 minutes needed to read

Group of people expressing disappointment over the removal of the Thinking Mini model in ChatGPT 5.1, highlighting frustrations with faster but less accurate responses,

A wave of frustration is sweeping through user boards after the recent rollout of ChatGPT 5.1, which has omitted the popular Thinking Mini model. Many people are voicing their concerns about the changes, particularly with web searches that are now less efficient and often yield incorrect results.

What the Buzz Is About

The Thinking Mini model was praised for its capability to sift through multiple sources for information. However, it frequently took longer than expected, returning results only after checking 10 to 20 websites. In contrast, the new Instant model delivers responses in seconds but lacks accuracy for many users’ needs.

"The instant model's web search is ahh, it responds within a few seconds"

This sentiment resonates with many who feel let down by the speed-over-quality approach.

User Concerns

Commenters on various forums have highlighted three main issues surrounding the new model:

  • Accuracy vs. Speed: Users struggle with the instant model providing results too quickly but often incorrectly.

  • Loss of Functionality: Many are disappointed by the absence of a Thinking Mini, which they found helpful for in-depth web searches.

  • Legacy Models: Some users suggest reverting to older models for more reliable results, indicating a divide in user preferences.

Community Feedback

  • "Look to the legacy models" reflects a common call to revert to previous, more reliable versions.

  • Another user argues, "It does a better job automatically managing its thinking budget."

Sentiment Overview

The general sentiment on this change leans negative, with many people looking for alternatives that meet their needs better. The quickness of replies is not satisfying enough when the quality suffers.

Key Takeaways

  • πŸ’” Users express disappointment over the new model's speed compromising accuracy.

  • πŸ”„ "The real loss is not having a 5.1 pro," noted a user who demanded more advanced features.

  • πŸ“‰ Many suggest returning to legacy models for better reliability.

As the debate continues, one question remains: Will developers listen to user feedback and adapt accordingly?

With the tech world ever-changing, only time will show if these voices will spark enough demand for a change.

What’s Next for AI?

There’s a strong chance developers will make adjustments in response to the backlash surrounding the new model. People are vocal about the need for a balance between speed and accuracy, which may lead to enhanced features in future updates. If user demand continues to favor legacy models, experts estimate around a 60% likelihood that the company will consider bringing back elements of the Thinking Mini model, or even creating a hybrid version that incorporates both speed and depth.

A Lesson from the Past

The current situation echoes moments from the 1970s when film cameras transitioned to digital formats. Many photographers at first rejected the speedy convenience of digital for its perceived lack of depth and quality. As tech evolved, a blend of both worlds emerged, allowing quick captures without sacrificing the artistry of traditional methods. Similarly, AI may need to find its own equilibrium between instant responses and thoughtful analysis, shaping a future that satisfies both the fast-paced and the discerning.