Productivity & writing · alternatives

Best Underdog alternatives in 2026 (free and paid)

People look past Underdog for practical reasons. Access is by invite-only beta, so you request an invite and may wait. It needs a Mac with Apple silicon, which rules out Intel Macs, Windows, Linux and Android, and an iPhone and iPad app is mentioned only in the privacy policy. It also offers no API, so you cannot automate it from code or other tools.

If you want an assistant that works on more devices, Microsoft Copilot runs on web, Windows, Mac, iOS and Android and has a free plan; Microsoft 365 Personal is $9.99 per month and adds Copilot in Word, Excel, PowerPoint and Outlook. For meeting notes specifically, Otter.ai records, transcribes and summarizes Zoom, Teams and Google Meet calls; it has a free plan and Pro is $16.99 per user per month. For general writing and analysis, ChatGPT (Plus, $20 per month) and Claude (Pro, $20 per month) both have free plans. These are cloud services, unlike Underdog's on-device model.

"Better suited" below is based on documented features and pricing from our verified profiles, not on a head-to-head test. Prices are USD as published by each vendor.

Underdog and its alternatives, as their sites look today

Our own captures of each vendor's public pages. Click a frame for the full-size image.

Underdog homepage — screenshot of the productivity & writing AI tool, Oct 1, 2026
Underdog homepage. underdog.ai, captured Oct 1, 2026
Microsoft Copilot homepage — screenshot of the chat assistants AI tool, Oct 1, 2026
Microsoft Copilot homepage. copilot.microsoft.com, captured Oct 1, 2026
Otter.ai pricing page with plans and prices — screenshot of the audio & voice AI tool, Oct 1, 2026
Otter.ai homepage. otter.ai, captured Oct 1, 2026
ChatGPT API documentation — screenshot of the chat assistants AI tool, Oct 13, 2026
ChatGPT homepage. platform.openai.com, captured Oct 13, 2026

Why people look beyond Underdog

  • Invite-only beta You must request an invite and may wait.
  • Requires a Mac with Apple silicon Intel Macs and other operating systems are excluded; Windows, Linux and Android are not available.
  • Windows, Linux, iOS and Android not yet available Windows, Linux, iOS and Android users cannot use it, apart from the iPhone/iPad app named in the policy.

Taken from the documented limitations in our Underdog profile.

Underdog and its alternatives at a glance

Alternatives at a glance
ToolStarting priceFree tierPlatformsMain limitation
Underdog (this page) Not published Yes Desktop Access is by invite-only beta, and the product is a Mac app (an iPhone and iPad app is mentioned only in the privacy policy), with expense tracking and tax features still marked coming soon.
Microsoft Copilot $9.99/mo (Microsoft 365 Personal) Yes Web, Desktop, Mobile Free-tier usage limits are not quantified; higher usage requires a paid Microsoft 365 plan.
Otter.ai $16.99 (Pro) Yes Web, Desktop, Mobile, API Free plan limited to 3 lifetime file imports and 300 monthly transcription minutes; Pro plan capped at 1,200 minutes monthly and 90 minutes per meeting
ChatGPT $20/mo (Plus (consumer)) Yes Web, Desktop, Mobile, API Almost every tool (uploads, images, voice, deep research, Codex) has plan-dependent usage caps that OpenAI states can change over time, and the API is billed separately from every ChatGPT subscription.
Claude $20/mo (Pro) Yes Web, Desktop, Mobile, API All plans have usage limits that reset on a schedule; the paid chat subscription does not include API access, which is billed separately per token.

4 alternatives to Underdog, by need

When to pick each alternative
AlternativePick it whenStarting priceWatch out for
Microsoft Copilot
$9.99/mo (Microsoft 365 Personal)
Otter.ai
$16.99 (Pro)
ChatGPT
$20/mo (Plus (consumer))
Claude
$20/mo (Pro)

Microsoft Copilot

Web · Desktop · Mobile

No user reviews yet

Microsoft's AI assistant app on web, Windows, Mac, iOS and Android, connected to Word, Excel, PowerPoint, Outlook and Teams.

Free stops at: Some capabilities subject to usage limits

Listed Not yet reviewed

Verified copilot.microsoft.com (opens Microsoft Copilot website in a new tab)

Free · paid from $9.99/mo US · checked Sep 29

ChatGPT

Web · Desktop · Mobile · API

No user reviews yet

OpenAI's general-purpose AI assistant for writing, research, analysis, image generation and coding help.

Free stops at: Unlimited everyday text chats subject to abuse-prevention safeguards, Separate usage limits for file uploads,…

Listed Not yet reviewed

Verified chatgpt.com (opens ChatGPT website in a new tab)

Free · paid from $20/mo US · checked Sep 30

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Frequently asked questions

Is there a free alternative to Underdog?

Microsoft Copilot, Otter.ai, ChatGPT and Claude all have a free plan according to our data. Underdog itself is an invite-only beta.

What can I use if I do not have an Apple silicon Mac?

Microsoft Copilot lists web, Windows, Mac, iOS and Android apps. ChatGPT and Claude are also available as general assistants. Underdog needs Apple silicon.

Which alternative is closest for meeting notes?

Otter.ai, which records, transcribes and summarizes Zoom, Teams and Google Meet calls. Pro starts at $16.99 per user per month.

Does Underdog have an API?

No API is offered, so it cannot be automated from code or other tools.

Still considering Underdog?