Fathom Layer ranking
Best AI Assistants (2026)
Ranked by our design score and documented from primary-source specs — not affiliate payouts. 5 entries, reviewed by a human, updated as the field moves. See how we score.
- 1
ChatGPT Plus
$20/mo
OpenAI's $20/mo tier: broad reasoning and multi-modal input, shipped fast. Rate limits under load and hallucinations remain the trade-off.
Full review & specs → - 2
Claude Pro
$20/mo
Anthropic's $20/mo tier, strongest on coding and long-context recall, with Artifacts for live output. Tighter usage limits than its peers.
Full review & specs → - 3
Microsoft 365 Copilot
$30/mo
A $30/user add-on that lives inside Teams, Outlook and PowerPoint. Strong at summarising threads and meetings; still finicky in Excel.
Full review & specs → - 4
Notion AI
Add-on: $8/mo
Integrates AI directly into your Notion workspace. It can summarize long documents, extract action items from meeting notes, and rewrite text for different tones without switching tabs.
Full review & specs → - 5
NotebookLM
Free
Google's personalized AI research assistant. Upload your PDFs, Google Docs, and web links, and NotebookLM becomes an expert on your specific source material. Famous for its 'Audio Overview' feature that turns documents into a realistic podcast.
Full review & specs →
Looking for the full field? Browse every ai assistants in the index.