Best AI Chat Assistants tools
General-purpose AI assistants for chat, reasoning, research, and everyday work — the flagship subscriptions from OpenAI, Anthropic, Google, and others.
5 tools · 10 comparisons
AI Chat Assistants pricing overview
| Tool | Free plan | Starts at | Best for |
|---|---|---|---|
| ChatGPT | Yes | $20/mo (Plus) | Anyone who wants one subscription covering chat, images, voice, and files |
| Claude | Yes | $20/mo (Pro) | Writers and developers who value long context and careful output |
| Google Gemini | Yes | $19.99/mo (Google AI Pro) | People living in Gmail, Docs, and the Google ecosystem |
| Perplexity | Yes | $20/mo (Pro) | Researchers and professionals who need cited, current answers |
| Grok | Yes | $30/mo (SuperGrok) | Users who want real-time social data and fewer guardrails |
Best free options
Cheapest paid plans
- Google Gemini$19.99/mo (Google AI Pro)
- ChatGPT$20/mo (Plus)
- Claude$20/mo (Pro)
- Perplexity$20/mo (Pro)
All AI Chat Assistants tools
ChatGPT
AI Chat Assistants
The most widely used AI assistant, with GPT-5-class models, voice, vision, and DALL-E image generation.
Claude
AI Chat Assistants
Anthropic's assistant, known for writing quality, long documents, and the Claude Code developer tool.
Google Gemini
AI Chat Assistants
Google's assistant with a 1M-token context window, Veo video, and deep Workspace integration.
Perplexity
AI Chat Assistants
An AI answer engine that searches the live web and cites its sources on every response.
Grok
AI Chat Assistants
xAI's assistant with real-time X (Twitter) data and an unfiltered conversational style.
AI Chat Assistants comparisons
Related reading
AI Chat Assistants FAQ
What is the best free ai chat assistants tool?
ChatGPT is a strong free option — Free tier with limited access to flagship models and daily caps. Other tools with free plans in this category include Claude, Google Gemini.
What is the cheapest ai chat assistants tool?
Google Gemini has the lowest entry price at $19.99/mo (Google AI Pro).
How many ai chat assistants tools do you compare?
We currently track 5 ai chat assistants tools and 10 head-to-head comparisons in this category.