23 Best Large Language Models (LLMs) in 2025

Large language models, also known as LLMs, are advanced AI systems that were pre-trained on large data sets designed to recognize human language and generate unique content based on user input.

In fact, there are over 300 LLMs designed for a range of use cases from text generation to writing code. In this blog post, you’ll find a list of 23 leading LLMs as of August 2025.

Best LLMs in August 2025

Here’s a table with 23 key large language models (LLMS) in 2025:

Let’s take a closer look at some of the most popular models recently introduced to the market.

1. GPT-5

Developer: OpenAI

Release Date: August 7, 2025

Context Length: 272 thousand tokens

Image Input Support: Available

License: Proprietary

What is it? GPT‑5 is the latest model released by OpenAI, which is the company’s top performing model for coding and agentic tasks, successor of GPT-4o.

GPT-5 is designed to be less prone to generating incorrect or misleading information, enhancing trustworthiness in its outputs. According to OpenAI, the hallucination rate of GPT-5 is 26% lower than that of GPT-4o, indicating a reduced percentage of factual claims with minor or major errors.

GPT-5 allows users to adjust the detail and length of responses to suit their specific needs. Its ability to engage proactively enables it to ask relevant follow-up questions, creating a more interactive and meaningful dialogue.

2. Grok 4

Developer: xAI

Release Date: July 9, 2025

Context Length: 256 thousand tokens

Image Input Support: Available

License: Proprietary

What is it? Grok 4 is the latest AI model developed by xAI, Elon Musk’s startup.

The model utilized a large and varied dataset for training, leveraging xAI’s internal supercomputer, Colossus, which is equipped with 200,000 GPUs.

Grok 4 can utilize external tools such as search engines and code interpreters. When addressing complex programming challenges or looking for current information on a topic, the model can generate its own search queries and retrieve real-time data from the internet to enhance its responses.

The model is also capable of analyzing various media types, including images and videos, which helps to increase the relevance and accuracy of its answers.

3. GPT-4.1

Developer: OpenAI

Release Date: April 14, 2025

Context Length: 1 million tokens

Image Input Support: Available

License: Proprietary

What is it? GPT-4.1 is a flagship general-purpose model from OpenAI designed for “problem solving across domains”, as the company describes itself.

The model supports a context window of up to 1 million tokens, allowing for the analysis of larger datasets. GPT-4.1 is a versatile model capable of analyzing both text and images.

4. Gemini 2.5 Pro

Developer: Google

Release Date: June 17, 2025

Context Length: 1 million tokens

Image Input Support: Available

License: Proprietary

What is it? Gemini 2.5 Pro is Google’s most advanced AI model within the Gemini series, designed to address complex problems.

Recently released in June 2025, it stands out as a multimodal large language model (LLM), capable of processing and analyzing diverse data types, including text, audio, images, video, and entire code repositories. This versatility allows Gemini 2.5 Pro to extract insights and
generate solutions from a wide array of information sources.

5. DeepSeek R1 0528

Developer: DeepSeek

Release Date: May 28, 2025

Context Length: 128 thousand tokens

Image Input Support: Not available

License: Open Source

What is it? DeepSeek R1 0528 is the latest iteration of DeepSeek’s R1 AI model, released on May 28, 2025.

The model’s advanced reasoning features enable it to tackle complex problems more effectively, making it suitable for applications that require deep analytical skills.

DeepSeek R1 0528 continues to be an open-weight model, boasting an impressive architecture with 685 billion parameters. Of these, approximately 37 billion are active at inference time.

This improvement solidifies DeepSeek’s position as a comprehensive open-source alternative to leading proprietary models from OpenAI and Google, all while preserving the cost-effectiveness and accessibility inherent in open-source development.

6. Claude Opus 4

Developer: Anthropic

Release Date: May 22, 2025

Context Length: 200 thousand tokens

Image Input Support: Available

License: Proprietary

What is it? Claude 4 Opus is the most advanced AI model from Anthropic, the company states.

Recently released in May 2025, it excels in handling complex, long-running tasks, making it ideal for coding, deep research, and writing.

The model supports a context length of 200 thousand tokens, which is typical for AI models within the Claude 4 family.

7. Qwen3-235B-A22B-Thinking-2507

Developer: Alibaba

Release Date: July, 2025

Context Length: 262 thousand tokens

Image Input Support: Not available

License: Open Source

What is it? Qwen3-235B-A22B-Thinking-2507 is an advanced, open-source language learning model developed by Alibaba Cloud, designed for reasoning tasks.

Supports a native context length of 262,144 tokens, which is crucial for complex reasoning tasks and can be used in various applications, including code generation tasks and solving math problems.

8. Claude Sonnet 4

Developer: Anthropic

Release Date: May 22, 2025

Context Length: 200 thousand tokens

Image Input Support: Available

License: Proprietary

What is it? Claude Sonnet 4 is a mid-sized model developed by Anthropic, designed for high-volume applications.

According to the company, the model strikes a balance between performance and efficiency. Notably, Sonnet 4 excels in managing specific workflows such as code generation, data analysis, and search.