List of the Top 25 Large Language Models for OpenRouter in 2025

ChatGPT is a state-of-the-art conversational AI developed by OpenAI, designed to assist users in a wide variety of tasks including creative writing, studying, brainstorming, coding, data analysis, and more. The platform is freely accessible online with additional subscription tiers—Plus and Pro—that provide enhanced capabilities such as access to the latest AI models (GPT-4o, OpenAI o1 pro), extended usage limits, and advanced voice and video features. ChatGPT supports multimodal interaction, allowing users to type or speak commands and receive instant, contextually relevant responses. Integrated tools such as DALL·E 3 enable users to generate images from text prompts, while Canvas supports collaborative writing and code editing. It also incorporates real-time web search to deliver up-to-date information and a research preview for deep exploratory tasks. With customizable GPTs, users can tailor the AI’s behavior to specific needs, and advanced projects allow managing workflows and tasks efficiently. ChatGPT is designed for a broad audience including students, educators, content creators, developers, and enterprises looking to enhance productivity and creativity through AI augmentation. OpenAI maintains a strong commitment to safety, privacy, and transparency, ensuring secure and ethical AI usage. The platform’s seamless cross-device availability allows users to work and interact effortlessly anywhere. Regular updates and new feature releases keep ChatGPT at the forefront of AI innovation and user experience.

OpenAI is committed to ensuring that artificial general intelligence (AGI)—characterized by its ability to perform most tasks that are economically important with a level of autonomy that surpasses human capabilities—benefits all of humanity. Our primary goal is to create AGI that is both safe and beneficial; however, we also view our mission as a success if we empower others to reach this same objective. You can take advantage of our API for numerous language-based functions, such as semantic search, summarization, sentiment analysis, content generation, translation, and much more, all achievable with just a few examples or a clear instruction in English. A simple integration gives you access to our ever-evolving AI technology, enabling you to test the API's features through these sample completions and uncover a wide array of potential uses. As you explore, you may find innovative ways to harness this technology for your projects or business needs.

Gemini, a cutting-edge AI chatbot developed by Google, is designed to enhance both creativity and productivity through dynamic, natural language conversations. It is accessible on web and mobile devices, seamlessly integrating with various Google applications such as Docs, Drive, and Gmail, which empowers users to generate content, summarize information, and manage tasks more efficiently. Thanks to its multimodal capabilities, Gemini can interpret and generate different types of data, including text, images, and audio, allowing it to provide comprehensive assistance in a wide array of situations. As it learns from interactions with users, Gemini tailors its responses to offer personalized and context-aware support, addressing a variety of user needs. This level of adaptability not only ensures responsive assistance but also allows Gemini to grow and evolve alongside its users, establishing itself as an indispensable resource for anyone aiming to improve their productivity and creativity. Furthermore, its unique ability to engage in meaningful dialogues makes it an innovative companion in both professional and personal endeavors.

Gemini Advanced is a cutting-edge AI model that showcases exceptional capabilities in understanding, generating, and solving complex problems in diverse domains. Its groundbreaking neural architecture ensures high levels of accuracy, intricate contextual awareness, and advanced reasoning skills. Designed to manage multifaceted tasks, this sophisticated system can create detailed technical documentation, write code, conduct comprehensive data analysis, and provide strategic insights. Its versatile nature and scalability render it an essential tool for individual users and large enterprises alike. By setting a new standard for intelligence, creativity, and reliability in AI applications, Gemini Advanced promises to revolutionize multiple sectors. Additionally, users will have the advantage of utilizing Gemini within various Google platforms like Gmail and Docs, along with generous offerings such as 2 TB of storage through Google One, significantly boosting their productivity. Moreover, the integration with Deep Research allows users to perform extensive and rapid research on nearly any subject, further enhancing the breadth of resources at their disposal. This ability to seamlessly access information empowers users to make well-informed decisions and fosters innovation across different fields.

Claude exemplifies an advanced AI language model designed to comprehend and generate text that closely mirrors human communication. Anthropic is an institution focused on the safety and research of artificial intelligence, striving to create AI systems that are reliable, understandable, and controllable. Although modern large-scale AI systems bring significant benefits, they also introduce challenges like unpredictability and opacity; therefore, our aim is to address these issues head-on. At present, our main focus is on progressing research to effectively confront these challenges; however, we foresee a wealth of opportunities in the future where our initiatives could provide both commercial success and societal improvements. As we forge ahead, we remain dedicated to enhancing the safety, functionality, and overall user experience of AI technologies, ensuring they serve humanity's best interests.

GPT-4o, with the "o" symbolizing "omni," marks a notable leap forward in human-computer interaction by supporting a variety of input types, including text, audio, images, and video, and generating outputs in these same formats. It boasts the ability to swiftly process audio inputs, achieving response times as quick as 232 milliseconds, with an average of 320 milliseconds, closely mirroring the natural flow of human conversations. In terms of overall performance, it retains the effectiveness of GPT-4 Turbo for English text and programming tasks, while significantly improving its proficiency in processing text in other languages, all while functioning at a much quicker rate and at a cost that is 50% less through the API. Moreover, GPT-4o demonstrates exceptional skills in understanding both visual and auditory data, outpacing the abilities of earlier models and establishing itself as a formidable asset for multi-modal interactions. This groundbreaking model not only enhances communication efficiency but also expands the potential for diverse applications across various industries. As technology continues to evolve, the implications of such advancements could reshape the future of user interaction in multifaceted ways.

Claude Sonnet 3.5 from Anthropic is a highly efficient AI model that excels in key areas like graduate-level reasoning (GPQA), undergraduate knowledge (MMLU), and coding proficiency (HumanEval). It significantly outperforms previous models in grasping nuance, humor, and following complex instructions, while producing content with a conversational and relatable tone. With a performance speed twice that of Claude Opus 3, this model is optimized for complex tasks such as orchestrating workflows and providing context-sensitive customer support. Available for free on Claude.ai and the Claude iOS app, and offering higher rate limits for Claude Pro and Team plan users, it’s also accessible through the Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI, making it both affordable and scalable for developers and businesses alike.

Claude Sonnet 3.7, created by Anthropic, is an innovative AI model that brings a unique approach to problem-solving by balancing rapid responses with deep reflective reasoning. This hybrid capability allows users to toggle between quick, efficient answers for everyday tasks and more thoughtful, reflective responses for complex challenges. Its advanced reasoning capabilities make it ideal for tasks like coding, natural language processing, and critical thinking, where nuanced understanding is essential. The ability to pause and reflect before providing an answer helps Claude Sonnet 3.7 tackle intricate problems more effectively, offering professionals and organizations a powerful AI tool that adapts to their specific needs for both speed and accuracy.

A streamlined model that excels in both text comprehension and multimodal reasoning abilities. The GPT-4o mini has been crafted to efficiently manage a vast range of tasks, characterized by its affordability and quick response times, which make it particularly suitable for scenarios requiring the simultaneous execution of multiple model calls, such as activating various APIs at once, analyzing large sets of information like complete codebases or lengthy conversation histories, and delivering prompt, real-time text interactions for customer support chatbots. At present, the API for GPT-4o mini supports both textual and visual inputs, with future enhancements planned to incorporate support for text, images, videos, and audio. This model features an impressive context window of 128K tokens and can produce outputs of up to 16K tokens per request, all while maintaining a knowledge base that is updated to October 2023. Furthermore, the advanced tokenizer utilized in GPT-4o enhances its efficiency in handling non-English text, thus expanding its applicability across a wider range of uses. Consequently, the GPT-4o mini is recognized as an adaptable resource for developers and enterprises, making it a valuable asset in various technological endeavors. Its flexibility and efficiency position it as a leader in the evolving landscape of AI-driven solutions.

Gemini 2.0 is an advanced AI model developed by Google, designed to bring transformative improvements in natural language understanding, reasoning capabilities, and multimodal communication. This latest iteration builds on the foundations of its predecessor by integrating comprehensive language processing with enhanced problem-solving and decision-making abilities, enabling it to generate and interpret responses that closely resemble human communication with greater accuracy and nuance. Unlike traditional AI systems, Gemini 2.0 is engineered to handle multiple data formats concurrently, including text, images, and code, making it a versatile tool applicable in domains such as research, business, education, and the creative arts. Notable upgrades in this version comprise heightened contextual awareness, reduced bias, and an optimized framework that ensures faster and more reliable outcomes. As a major advancement in the realm of artificial intelligence, Gemini 2.0 is poised to transform human-computer interactions, opening doors for even more intricate applications in the coming years. Its groundbreaking features not only improve the user experience but also encourage deeper and more interactive engagements across a variety of sectors, ultimately fostering innovation and collaboration. This evolution signifies a pivotal moment in the development of AI technology, promising to reshape how we connect and communicate with machines.

Grok 4 is the latest AI model released by xAI, built using the Colossus supercomputer to offer state-of-the-art reasoning, natural language understanding, and multimodal capabilities. This model can interpret and generate responses based on text and images, with planned support for video inputs to broaden its contextual awareness. It has demonstrated exceptional results on scientific reasoning and visual tasks, outperforming several leading AI competitors in benchmark evaluations. Targeted at developers, researchers, and technical professionals, Grok 4 delivers powerful tools for complex problem-solving and creative workflows. The model integrates enhanced moderation features to reduce biased or harmful outputs, addressing critiques from previous versions. Grok 4 embodies xAI’s vision of combining cutting-edge technology with ethical AI practices. It aims to support innovative scientific research and practical applications across diverse domains. With Grok 4, xAI positions itself as a strong competitor in the AI landscape. The model represents a leap forward in AI’s ability to understand, reason, and create. Overall, Grok 4 is designed to empower advanced users with reliable, responsible, and versatile AI intelligence.

Grok 4.1 Fast is xAI’s state-of-the-art tool-calling model built to meet the needs of modern enterprise agents that require long-context reasoning, fast inference, and reliable real-world performance. It supports an expansive 2-million-token context, allowing it to maintain coherence during extended conversations, research tasks, or multi-step workflows without losing accuracy. xAI trained the model using real-world simulated environments and broad tool exposure, resulting in extremely strong benchmark performance across telecom, customer support, and autonomy-driven evaluations. When integrated with the Agent Tools API, Grok can combine web search, X search, document retrieval, and code execution to produce final answers grounded in real-time data. The model automatically determines when to call tools, how to plan tasks, and which steps to execute, making it capable of acting as a fully autonomous agent. Its tool-calling precision has been validated through multiple independent evaluations, including the Berkeley Function Calling v4 benchmark. Long-horizon reinforcement learning allows it to maintain performance even across millions of tokens, which is a major improvement over previous generations. These strengths make Grok 4.1 Fast especially valuable for enterprises that rely on automation, knowledge retrieval, or multi-step reasoning. Its low operational cost and strong factual correctness give developers a practical way to deploy high-performance agents at scale. With robust documentation, free introductory access, and native integration with the X ecosystem, Grok 4.1 Fast enables a new class of powerful AI-driven applications.

Gemini's built-in multimodal features enable the transformation of different input forms into a variety of output types. Since its launch, Gemini has prioritized responsible development by incorporating safety measures and working alongside partners to improve its inclusivity and security. Users can easily integrate Gemini models into their applications through Google AI Studio and Google Cloud Vertex AI, opening the door to numerous creative possibilities. This seamless integration fosters a more interactive experience with technology across various platforms and applications, ultimately enhancing user engagement and innovation. Furthermore, the versatility of Gemini's capabilities positions it as a valuable tool for developers seeking to push the boundaries of what technology can achieve.

The Gemini 2.0 Flash AI model represents a groundbreaking advancement in rapid, intelligent computing, with the goal of transforming benchmarks in instantaneous language processing and decision-making skills. Building on the solid groundwork established by its predecessor, this model incorporates sophisticated neural structures and notable optimization enhancements that enable swifter and more accurate outputs. Designed for scenarios requiring immediate processing and adaptability, such as virtual assistants, trading automation, and real-time data analysis, Gemini 2.0 Flash excels in a variety of applications. Its sleek and effective design ensures seamless integration across cloud, edge, and hybrid settings, allowing it to fit within diverse technological environments. Additionally, its exceptional contextual comprehension and multitasking prowess empower it to handle intricate and evolving workflows with precision and rapidity, further reinforcing its status as a valuable tool in artificial intelligence. As technology progresses with each new version, innovations like Gemini 2.0 Flash are instrumental in shaping the future landscape of AI solutions. This continuous evolution not only enhances efficiency but also opens doors to unprecedented capabilities across multiple industries.

GPT-5.1 Pro represents the top tier of OpenAI’s GPT-5 generation, delivering the most advanced reasoning, depth, and analytical intelligence available in ChatGPT. It is optimized for high-stakes, high-complexity scenarios where rigorous logic and verifiable accuracy are essential. Professionals use GPT-5.1 Pro for scientific research, large-scale codebases, legal reasoning, quantitative finance, data analysis, and multi-step decision workflows that exceed the capabilities of general models. With a significantly expanded context window, GPT-5.1 Pro can ingest and analyze long documents, datasets, transcripts, and multi-file projects in a single session. The model’s reasoning engine is tuned for deeper internal deliberation, enabling structured explanations, defensible conclusions, and clearer thought processes. GPT-5.1 Pro also features enhanced adherence to instructions, producing responses that are more predictable, consistent, and aligned with user goals. Compared to Instant and Thinking modes, it is built for reliability rather than speed, prioritizing quality of reasoning over quick output. While it supports most ChatGPT tools, it is intentionally restricted from Canvas and image generation to preserve dedicated compute for reasoning-heavy tasks. GPT-5.1 Pro is exclusive to ChatGPT Pro and Business subscribers, offering unlimited access within standard safety guardrails. It is the model tier best suited for users who depend on ChatGPT as a trusted research partner and analytical assistant.

Gemini Nano by Google is a streamlined and effective AI model crafted to excel in scenarios with constrained resources. Tailored for mobile use and edge computing, it combines Google's advanced AI infrastructure with cutting-edge optimization techniques, maintaining high-speed performance and precision. This lightweight model excels in numerous applications such as voice recognition, instant translation, natural language understanding, and offering tailored suggestions. Prioritizing both privacy and efficiency, Gemini Nano processes data locally, thus minimizing reliance on cloud services while implementing robust security protocols. Its adaptability and low energy consumption make it an ideal choice for smart devices, IoT solutions, and portable AI systems. Consequently, it paves the way for developers eager to incorporate sophisticated AI into everyday technology, enabling the creation of smarter, more responsive gadgets. With such capabilities, Gemini Nano is set to redefine how we interact with AI in our day-to-day lives.

The Gemini 1.5 Pro AI model stands as a leading achievement in the realm of language modeling, crafted to deliver incredibly accurate, context-aware, and human-like responses that are suitable for numerous applications. Its cutting-edge neural architecture empowers it to excel in a variety of tasks related to natural language understanding, generation, and logical reasoning. This model has been carefully optimized for versatility, enabling it to tackle a wide array of functions such as content creation, software development, data analysis, and complex problem-solving. With its advanced algorithms, it possesses a profound grasp of language, facilitating smooth transitions across different fields and conversational styles. Emphasizing both scalability and efficiency, the Gemini 1.5 Pro is structured to meet the needs of both small projects and large enterprise implementations, positioning itself as an essential tool for boosting productivity and encouraging innovation. Additionally, its capacity to learn from user interactions significantly improves its effectiveness, rendering it even more efficient in practical applications. This continuous enhancement ensures that the model remains relevant and useful in an ever-evolving technological landscape.

The Gemini 1.5 Flash AI model is an advanced language processing system engineered for exceptional speed and immediate responsiveness. Tailored for scenarios that require rapid and efficient performance, it merges an optimized neural architecture with cutting-edge technology to deliver outstanding efficiency without sacrificing accuracy. This model excels in high-speed data processing, enabling rapid decision-making and effective multitasking, making it ideal for applications including chatbots, customer service systems, and interactive platforms. Its streamlined yet powerful design allows for seamless deployment in diverse environments, from cloud services to edge computing solutions, thereby equipping businesses with unmatched flexibility in their operations. Moreover, the architecture of the model is designed to balance performance and scalability, ensuring it adapts to the changing needs of contemporary enterprises while maintaining its high standards. In addition, its versatility opens up new avenues for innovation and efficiency in various sectors.

The Mixtral 8x7B model represents a cutting-edge sparse mixture of experts (SMoE) architecture that features open weights and is made available under the Apache 2.0 license. This innovative model outperforms Llama 2 70B across a range of benchmarks, while also achieving inference speeds that are sixfold faster. As the premier open-weight model with a versatile licensing structure, Mixtral stands out for its impressive cost-effectiveness and performance metrics. Furthermore, it competes with and frequently exceeds the capabilities of GPT-3.5 in many established benchmarks, underscoring its importance in the AI landscape. Its unique blend of accessibility, rapid processing, and overall effectiveness positions it as an attractive option for developers in search of top-tier AI solutions. Consequently, the Mixtral model not only enhances the current technological landscape but also paves the way for future advancements in AI development.

We have integrated Llama 3 into Meta AI, our smart assistant that transforms the way people perform tasks, innovate, and interact with technology. By leveraging Meta AI for coding and troubleshooting, users can directly experience the power of Llama 3. Whether you are developing agents or other AI-based solutions, Llama 3, which is offered in both 8B and 70B variants, delivers the essential features and adaptability needed to turn your concepts into reality. In conjunction with the launch of Llama 3, we have updated our Responsible Use Guide (RUG) to provide comprehensive recommendations on the ethical development of large language models. Our approach focuses on enhancing trust and safety measures, including the introduction of Llama Guard 2, which aligns with the newly established taxonomy from MLCommons and expands its coverage to include a broader range of safety categories, alongside code shield and Cybersec Eval 2. Moreover, these improvements are designed to promote a safer and more responsible application of AI technologies across different fields, ensuring that users can confidently harness these innovations. The commitment to ethical standards reflects our dedication to fostering a secure and trustworthy AI environment.

We are excited to unveil an open-source AI model that offers the ability to be fine-tuned, distilled, and deployed across a wide range of platforms. Our latest instruction-tuned model is available in three different sizes: 8B, 70B, and 405B, allowing you to select an option that best fits your unique needs. The open ecosystem we provide accelerates your development journey with a variety of customized product offerings tailored to meet your specific project requirements. You can choose between real-time inference and batch inference services, depending on what your project requires, giving you added flexibility to optimize performance. Furthermore, downloading model weights can significantly enhance cost efficiency per token while you fine-tune the model for your application. To further improve performance, you can leverage synthetic data and seamlessly deploy your solutions either on-premises or in the cloud. By taking advantage of Llama system components, you can also expand the model's capabilities through the use of zero-shot tools and retrieval-augmented generation (RAG), promoting more agentic behaviors in your applications. Utilizing the extensive 405B high-quality data enables you to fine-tune specialized models that cater specifically to various use cases, ensuring that your applications function at their best. In conclusion, this empowers developers to craft innovative solutions that not only meet efficiency standards but also drive effectiveness in their respective domains, leading to a significant impact on the technology landscape.

Meta’s Llama 4 Behemoth is an advanced multimodal AI model that boasts 288 billion active parameters, making it one of the most powerful models in the world. It outperforms other leading models like GPT-4.5 and Gemini 2.0 Pro on numerous STEM-focused benchmarks, showcasing exceptional skills in math, reasoning, and image understanding. As the teacher model behind Llama 4 Scout and Llama 4 Maverick, Llama 4 Behemoth drives major advancements in model distillation, improving both efficiency and performance. Currently still in training, Behemoth is expected to redefine AI intelligence and multimodal processing once fully deployed.

Meta’s Llama 4 Maverick is a state-of-the-art multimodal AI model that packs 17 billion active parameters and 128 experts into a high-performance solution. Its performance surpasses other top models, including GPT-4o and Gemini 2.0 Flash, particularly in reasoning, coding, and image processing benchmarks. Llama 4 Maverick excels at understanding and generating text while grounding its responses in visual data, making it perfect for applications that require both types of information. This model strikes a balance between power and efficiency, offering top-tier AI capabilities at a fraction of the parameter size compared to larger models, making it a versatile tool for developers and enterprises alike.

Llama 4 Scout represents a leap forward in multimodal AI, featuring 17 billion active parameters and a groundbreaking 10 million token context length. With its ability to integrate both text and image data, Llama 4 Scout excels at tasks like multi-document summarization, complex reasoning, and image grounding. It delivers superior performance across various benchmarks and is particularly effective in applications requiring both language and visual comprehension. Scout's efficiency and advanced capabilities make it an ideal solution for developers and businesses looking for a versatile and powerful model to enhance their AI-driven projects.

Gemini Enterprise is a comprehensive AI solution from Google Cloud that aims to utilize the extensive capabilities of Google's advanced AI models, tools for agent creation, and enterprise-level data access, all integrated seamlessly into everyday operations. This cutting-edge platform includes a unified chat interface that enables employees to interact effectively with internal documents, applications, multiple data sources, and customized AI agents. The core of Gemini Enterprise is built upon six critical components: the Gemini suite of large multimodal models, an agent orchestration workbench formerly known as Google Agentspace, pre-built starter agents, robust data integration connectors for business systems, comprehensive security and governance measures, and a collaborative partner ecosystem for tailored integrations. Designed for scalability across different departments and organizations, it allows users to create no-code or low-code agents that can automate a variety of tasks, including research synthesis, customer service interactions, code support, and contract evaluation while remaining compliant with corporate regulations. In addition to streamlining operations, the platform also aims to boost productivity and inspire innovation across businesses, making it easier for users to take advantage of advanced AI technologies. Ultimately, Gemini Enterprise represents a significant step forward in the integration of AI into business processes, paving the way for a new era of efficiency and creativity in the workplace.