General-purpose AI assistants and writing platforms that answer questions, draft and edit text, summarize documents, search the web and help with code. The tools here range from broad chat apps built on frontier models to research engines with citations and marketing suites tuned for brand voice. To choose, compare which models each plan includes, how generous the usage limits are, whether answers cite sources, which apps and files it can connect to, and how pricing scales once a team needs shared workspaces or admin controls.
Chatbots & Writing
OpenAI's general-purpose AI assistant for writing, research, coding and everyday questions, with a free tier and paid plans from Go to Pro.
Anthropic's AI assistant for long-form writing, analysis and coding, with Projects, Artifacts, Research and Claude Code on paid plans.
Google's AI assistant tied into Gmail, Docs and Search, with Gemini 4 Argon, Deep Research and image and video generation on Google AI plans.
Perplexity is an AI answer engine that searches the web and replies with cited sources, with Pro adding advanced models and deeper research.
Chinese AI lab's chat assistant and low-cost API, built on the DeepSeek V4 model family with DeepThink reasoning and web search.
SpaceXSI's AI assistant on grok.com, X and mobile, with chat, Grok Imagine for images and video, voice mode and app connectors.
Jasper is an AI platform for enterprise marketing teams, combining brand voice rules, a knowledge base and purpose-built marketing agents.