ChatGPT

Claude is Anthropic's AI assistant, designed for conversation, writing, coding, research, and complex reasoning. Unlike generic chatbots, Claude emphasizes helpfulness, honesty, and harmlessness through Constitutional AI training. Users can interact via text and analyze documents, images, and code. The Claude product suite includes Claude Code for agentic software development, Claude Cowork for non-technical automation, Claude Design for visual creation, and Claude Science for biological research. Available on web, mobile, and desktop with integrations for Google Drive, Gmail, DocuSign, and more.

Perplexity AI is an answer engine that combines real-time web search with AI-powered synthesis to deliver accurate, cited responses to questions. Unlike traditional search engines that return a list of links, Perplexity reads and summarizes information from multiple sources, providing answers with inline citations. Its conversational interface lets users ask follow-up questions to dig deeper. The platform includes features like Collections for organizing research, Pages for creating structured content, and a Pro Search mode that runs multiple queries to find the most comprehensive answer.

Gemini is Google's family of multimodal AI models that handle text, images, audio, video, and code within a single conversation. Available as a chatbot at gemini.google.com, through Google AI Studio for developers, or integrated across Google products like Search, Workspace, and Android. The model lineup ranges from Flash-Lite for fast, cost-efficient tasks to Pro and Ultra for complex reasoning and multimodal work. Key features include a massive 1 million token context window, native audio output, image generation through Nano Banana, agentic capabilities, and an experimental coding agent called Jules.

DeepSeek Chat is the conversational interface for DeepSeek's open-weight language models, developed by the Hangzhou-based AI company. The platform offers free access to models that rival GPT-4 and o1 in reasoning, coding, and mathematics, but trained at a fraction of the cost. DeepSeek-V3 and DeepSeek-R1 are the flagship models, with the R1 series specializing in complex reasoning tasks. The chatbot is available on iOS and Android and supports natural conversation, coding assistance, and research.

HuggingChat is an open source chat interface by HuggingFace that lets users interact with over 130 AI models. It includes Omni, an auto-selection feature that picks the best model for each request. Users can also manually choose from available open source models including DeepSeek V4 Flash. HuggingChat provides free access to powerful AI models without requiring technical setup, making it a practical way to explore and compare different model capabilities.