Claude (Anthropic) 

Known for safer and more nuanced responses, especially in ethical AI discussions.

Perplexity AI

Excels in real-time web search and fact-based answers with citations.

Google Gemini (formerly Bard)

Offers better integration with Google Services and real-world data.

Mistral AI

Provides powerful open-weight models optimized for efficiency and customization.

LLaMA (Meta)

A strong open-source alternative for those who need customizable AI models.

Copilot (Microsoft)

Best for coding assistance with deep GitHub and IDE integration.