---
title: "The January GPT-4 Turbo is lazier than the last version"
description: "[![benchmark results](/assets/benchmarks-0125.svg)](https://aider.chat/assets/benchmarks-0125.svg)"
type: skill
canonical_url: https://claudary.paisolsolutions.com/skills/benchmarks-0125
source: "Claudary"
difficulty: intermediate
author: "Claude Code Knowledge Pack"
date: 2026-07-10T11:08:18.777Z
license: CC-BY-4.0
attribution: "The January GPT-4 Turbo is lazier than the last version — Claudary (https://claudary.paisolsolutions.com/skills/benchmarks-0125)"
---

# The January GPT-4 Turbo is lazier than the last version
[![benchmark results](/assets/benchmarks-0125.svg)](https://aider.chat/assets/benchmarks-0125.svg)

## Overview

---
title: The January GPT-4 Turbo is lazier than the last version
excerpt: The new `gpt-4-0125-preview` model is quantiatively lazier at coding than previous GPT-4 versions, according to a new "laziness" benchmark.
highlight_image: /assets/benchmarks-0125.jpg
nav_exclude: true
---
{% if page.date %}
<p class="post-date">{{ page.date | date: "%B %d, %Y" }}</p>
{% endif %}

# The January GPT-4 Turbo is lazier than the last version

[![benchmark results](/assets/benchmarks-0125.svg)](https://aider.chat/assets/benchmarks-0125.svg)

[OpenAI just released a new version of GPT-4 Turbo](https://openai.com/blog/new-embedding-models-and-api-updates).
This new model is intended to reduce the "laziness" that has been widely observed with the previous `gpt-4-1106-preview` model:

> Today, we are releasing an updated GPT-4 Turbo preview model, gpt-4-0125-preview. This model completes tasks like code generation more thoroughly than the previous preview model and is intended to reduce cases of “laziness” where the model doesn’t complete a task.

With that in mind, I've been benchmarking the new model using
aider's existing
[lazy coding benchmark](https://aider.chat/docs/unified-diffs.html).

## Benchmark results

Overall,
the new `gpt-4-0125-preview` model seems lazier
than the November `gpt-4-1106-preview` model:

- It gets worse benchmark scores when using the [unified diffs](https://aider.chat/docs/unified-diffs.html) code editing format.
- Using aider's older SEARCH/REPLACE block editing format, the new January model outperforms the older November model. But it still performs worse than both models using unified diffs.

## Related reports

This is one in a series of reports
that use the aider benchmarking suite to assess and compare the code
editing capabilities of OpenAI's GPT models.
You can review the other reports
for additional information:

- [GPT code editing benchmarks](https://aider.chat/docs/benchmarks.html) evaluates the March and June versions of GPT-3.5 and GPT-4.
- [Code editing benchmarks for OpenAI's "1106" models](https://aider.chat/docs/benchmarks-1106.html).
- [Aider's lazy coding benchmark](https://aider.chat/docs/unified-diffs.html).

---

Source: [Claudary](https://claudary.paisolsolutions.com/skills/benchmarks-0125) · https://claudary.paisolsolutions.com