Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Z.ai (GLM) | not listed | ? | Chatbots & AI assistants |
 ChatGPT | 34,99 PLN/mo | yes | Chatbots & AI assistants |
 Grok | 30 USD/mo | yes | Chatbots & AI assistants |
 DeepSeek | 0.02 USD | ? | Chatbots & AI assistants |
 Kimi | 15 USD/mo | ? | Chatbots & AI assistants |
 Arena AI | not listed | ? | Chatbots & AI assistants |
 HuggingChat | not listed | ? | Chatbots & AI assistants |
 Open WebUI | not listed | yes | Chatbots & AI assistants |
 Microsoft Copilot | 27.73 EUR/mo | trial | Chatbots & AI assistants |
Each alternative in short
1. ChatGPT
AI assistant for chatting, research, image creation, file analysis, and coding, for individuals and teams.
Yes, there is a free plan. Free plan includes unlimited text chats subject to abuse guardrails, with limited messages with uploads, limited image creation, limited voice chats, limited deep research, limited memory and context, limited Codex access, and limited ChatGPT Work access on desktop.
2. Grok
Frontier AI models from SpaceXAI for chat, code, voice, images and video, available via apps, X and a developer API.
Yes, there is a free plan. Free plan gives access to Grok within generous limits, including voice mode, connectors and real-time web and X search, with limited Grok Bot and Expert features.
3. DeepSeek
Chinese AI lab offering open-source large language models (DeepSeek-V4, R1) via a chat app, web interface and developer API.
The vendor does not state this clearly on the homepage or pricing page.
4. Kimi
AI assistant from Moonshot AI for chat, agentic coding, slide decks and deep research, aimed at developers and knowledge workers.
The vendor does not state this clearly on the homepage or pricing page.
5. Arena AI
Compare and vote on leading LLM, image, and code models, and browse the public AI leaderboard built from real-world evaluations.
The vendor does not state this clearly on the homepage or pricing page.
6. HuggingChat
Chat app with open source AI models; Omni auto-picks the best model or you choose one yourself.
The vendor does not state this clearly on the homepage or pricing page.
7. Open WebUI
Self-hosted AI chat interface that connects local and cloud models, with Python extensions, for individuals and organizations that want to keep control of their data.
Yes, there is a free plan. The open-source platform can be installed for free with pip or Docker, with no account required.
8. Microsoft Copilot
AI chat assistant from Microsoft for creating, brainstorming, learning and solving everyday problems, with a Microsoft 365 Copilot tier for work.
There is a free trial. Free trial offered for the Microsoft 365 Business Premium with Copilot plan (terms linked on the page). The free tier of the basic chat is not described in the provided text.
FAQ
What is the best alternative to Z.ai (GLM)?
The most popular option in the same category is ChatGPT. See the comparison table above.