AI Assist vs Fathom

AI Assist and Fathom are both meeting assistants tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

AI Assist

The tool installs as a browser extension, captures audio from your active meeting tab, and runs Whisper transcription through your own OpenAI key — raw audio never touches the vendor's servers. As the call unfolds, it auto-surfaces excerpts from your local files, cited by filename, without you typing a query. You can also ask questions directly and get answers grounded in the folders you've indexed, with citations. The ceiling appears at scale: it targets individuals and small teams working from a single machine, not organizations that need shared workspaces, admin controls, or SSO. Teams that outgrow solo use will find no per-seat tier to grow into.

Fathom

Fathom sits in the crowded meeting-intelligence space alongside Gong and Otter, but positions itself as a passive capture tool rather than a coaching platform. It records video calls across Zoom, Teams, and Google Meet, then generates summaries and action items automatically—users report reclaiming roughly 38 minutes per meeting. The free tier is genuinely unlimited for one user; paid plans scale to enterprise teams with shared visibility. The main friction: exact pricing isn't listed on the homepage, forcing a sales conversation to know costs. Language support and international availability remain unclear from public-facing materials, a notable gap for global teams.

Attribute	AI Assist	Fathom
Pricing	Paid	Paid
Price	$3 one-time	$19/mo per user
Free trial	14 days	90 days
Open source	No	No
Has API	No	Yes
Self-hosted option	Yes	No
Platforms	macOS, Linux, Windows; ChromeOS soon	Web
Languages	—	English
Released	2026	2019
Pros	BYOK routing means you pay Anthropic and OpenAI directly at their published rates, so there is no per-seat markup and no vendor throttling — the vendor states typical meeting cost runs $0.50–$2 depending on length. No bot joins the call, which means attendees never see an 'AI Assist has joined' notification — the extension captures the tab you are already in, removing the social friction that makes tools like Otter awkward in client meetings. On-device Whisper transcription means raw audio never leaves your machine, so you can run this on calls involving sensitive commercial or legal content without routing audio through a third-party pipeline. Proactive file-grounded insights surface relevant excerpts from your local documents during the call without a typed query, so you stop context-switching to search your notes mid-conversation. A one-time license price covers perpetual access within the v0.x line, so the cost equation does not change month over month as it does with subscription-based competitors.	Automatically generates summaries and action items, saving average 38 minutes per meeting Searchable transcripts and ability to query past conversations with Ask Fathom feature Works across team sizes from 1 to 1000 with shared visibility and consistent execution SOC 2 Type II, GDPR, HIPAA compliant with SSO/SCIM support Eliminates manual follow-ups and administrative overhead
Cons	The tool only supports Google Meet and Zoom Web; Microsoft Teams Web is not yet available. Teams whose organization standardized on Teams are blocked entirely until that platform support ships — no workaround exists within the current extension. There is no shared workspace, no team seat, and no admin layer. The moment a second person on your team needs access to meeting transcripts, the architecture offers nothing — at that point teams move to a subscription service like Fireflies or Granola that supports multi-user access, even if it means accepting a per-seat cost. The tool requires the user to provision and manage two separate API accounts — Anthropic for the LLM and OpenAI for Whisper — before the first meeting works. Users unfamiliar with API key management face a setup barrier that SaaS competitors with bundled transcription do not impose.	Specific pricing details not shown on homepage No mention of supported languages or international availability

Bottom line

Only Fathom exposes a public API. Choose based on which difference matters most for your workflow.

Frequently asked questions

What is the difference between AI Assist and Fathom?

AI Assist is Paid, while Fathom is Paid. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is AI Assist better than Fathom?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.