Discover the top 5 free AI models that every developer should know in 2025. This detailed PDF explores cutting-edge open-source AI models like LLaMA 3, Mistral Large, BLOOM, Google Gemma, and Falcon—each offering unique capabilities for coding, research, and real-world applications. Whether you’re a software engineer, AI researcher, or student, this guide helps you understand how to leverage these models for innovation, privacy, and efficiency. Learn how these free and open AI models are shaping the future of machine learning, generative AI, and natural language processing — without costly subscriptions or enterprise limitations.