Best in category

Best AI Chatbots (2026)

Compared on pricing, features, and privacy using published vendor data.

By Malcolm Tabi, CISSP · Pursuing AAISM — Founder, CompareMyAI · Last verified 9 October 2026

We compare 5 AI chat tools, ranked by our editorial score. Paid plans start from £6/mo. 5 offer a free tier; 5 state they don't train on your data.

Claude

AI Chatbot

8.9/ 10

Best for teams building AI chat into their products

Free

GDPR YesSOC 2 YesISO 27001 NoTrains on data NoMFA Yes

View Claude ChatGPT vs Claude

ChatGPT

AI Chatbot

8.7/ 10

Best for teams building AI chat into their products

Free

GDPR YesSOC 2 YesISO 27001 NoTrains on data NoMFA Yes

View ChatGPT Claude vs ChatGPT

Gemini Advanced

AI Chatbot

8.2/ 10

Best for teams building AI chat into their products

Free

GDPR YesSOC 2 YesISO 27001 YesTrains on data NoMFA Yes

View Gemini Advanced Claude vs Gemini Advanced

Perplexity AI

AI Chatbot

8.1/ 10

Best for developers adding AI chat via an API

Free

GDPR YesSOC 2 YesISO 27001 NoTrains on data NoMFA No

View Perplexity AI Claude vs Perplexity AI

Microsoft Copilot

AI Chatbot

7.8/ 10

Best for businesses needing enterprise-ready AI chat

Free

GDPR YesSOC 2 YesISO 27001 YesTrains on data NoMFA Yes

View Microsoft Copilot Claude vs Microsoft Copilot

Scores are our editorial rating out of 10, not a hands-on test. Compliance flags are vendor-claimed; “SOC 2” and “ISO 27001” mean the vendor holds the certificate, which may only cover business or enterprise plans.