Nexai

Semantic search over your own website content is the core of Nexai, an AI chat assistant and knowledge base platform for sites that want visitors to get answers without digging through pages.

You index your documents, and the website chat assistant answers from them.

Open source AI is included, and you can add a GPT-3.5 or GPT-4 subscription if you prefer those models.

The free Developer plan gives you 1 project, 1 website, 1 team member, 1,000 AI queries, 10 indexed vector documents and 100 MB of storage.

That is enough to test it, not to run a busy site.

The paid Cloud Scale plan starts at $50 a month in beta and raises the limits to 10 projects, 10 websites, 5 team members, 100K AI queries, 100 documents and 1 GB.

It also adds semantic search integration plus Telegram, WhatsApp, Discord and Slack bots.

Extra seats, documents, storage and queries are priced separately.