Personally I prefer to steer clear of closed source AI, so the open source models are more appealing to me.

Try the most popular ones and see which you prefer?

• DeepSeek.com
• https://chat.qwenlm.ai
• https://kimi.moonshot.cn
• https://mistral.ai

It’s too early to say but in the last week I’ve:
built a CoT system with the help of ChatGPT and a Deep Research system with DeepSeek V3.
I deleted my Qwen account because PAYG didn’t mean to them what it meant to me.
Revived Cohere’s websearch connection for use with the Deep Research (DS) project. We’re going generic
Shelved the Gemini 2.0 Thinking function because it no longer delivers the CoT.
Topped up my Mistral balance because on balance I’m moving away from US AI models.

I didn’t know about Qwen, Kimi and Mistral.