Productivity & writing · alternatives
Opal's free plan is the first thing people outgrow: 1 workspace, 15 items and 100 MB. Paid seats run $27 or $47 per month, API access for agents is limited to the top Complete System plan, and access is still invited in batches. Bulk data export is listed as coming soon, which raises lock-in worries, and the page says limits and pricing may change.
Notion AI is the conventional workspace alternative, with a free plan and a Plus plan at $12 per member per month ($10 when billed yearly). It adds 30-day page history and basic Slack and Google Drive connections, but AI is only a limited trial there, and it is page-based rather than a canvas. Gemini Notebook, formerly NotebookLM, is Google's research partner that answers questions and makes summaries, audio and slides grounded in your own sources. It has a free tier, but its starting paid price is not stated in our data, and it is for working from sources rather than laying out notes spatially.
"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.
Taken from the documented limitations in our Opal (spatial notes) profile.
| Tool | Starting price | Free tier | Platforms | Main limitation |
|---|---|---|---|---|
| Opal (spatial notes) (this page) | $27 (Core Essentials) | Yes | API | Free plan limited to 1 workspace, 15 items and 100 MB |
| Notion AI | $12/mo (Plus) | Yes | Web, Desktop, Mobile | Full AI needs Business or Enterprise, and even there a rolling six-hour and monthly usage allowance applies; premium models, Custom Agents and Workers consume separately purchased Notion credits. |
| Gemini Notebook (formerly NotebookLM) | Not published | Yes | Web, Mobile | Free tier has standard usage limits and 50 sources per notebook; higher limits need a Google AI Plus, Pro or Ultra plan, which Google says are only available in specific regions. |
| Alternative | Pick it when | Starting price | Watch out for |
|---|---|---|---|
| Notion AI |
$12/mo (Plus) | ||
| Gemini Notebook (formerly NotebookLM) |
Not published |
AI features built into Notion for writing, searching the workspace, research, meeting notes and agent tasks.
Free stops at: Trial of Notion AI (limited number of complimentary AI responses), Pages & blocks unlimited for individuals, …
Free · paid from $12/mo US · checked Sep 30
Google's AI research partner that answers questions and creates summaries, audio and slides grounded in your own sources.
Free stops at: Standard limits for chat and generation of Slides, Audio Overviews and other artifacts, Up to 50 sources per …
Verified notebook.google (opens Gemini Notebook (formerly NotebookLM) website in a new tab)
Free plan available US price unconfirmed
Online AI resume builder with one-click job tailoring, ATS checker, cover letters, job tracker and interview prep.
Watch out: No lasting free plan: downloads need Pro after 7 days, and USD prices were not confirmed.
From ≈$16–$25/mo US · checked Oct 11
AI resume builder with ATS-focused templates, Rezi Score, keyword targeting, cover letters and AI interview practice.
Free stops at: 1 resume, 1 AI interview
Free · paid from $29/mo US · checked Oct 11
Job search platform with an AI resume builder, keyword matching, job tracker and Chrome extension.
Free stops at: 10 AI bullet credits, 2 AI summary and 2 cover letter credits
Free · paid from $13/wk US · checked Oct 11
AI voice agents for insurance and healthcare outreach in India, handling lead qualification, booking, renewals and claims calls.
Watch out: There is no public pricing, so you must book a demo to learn what it costs.
Pricing US price unconfirmed
AI no-code builder for business apps, databases, workflows and forms, with unlimited users on every plan.
Free stops at: 50 credits/mo, 10 messages/day, 5,000 records
Free · paid from $20/mo US · checked Sep 29
Open-source enterprise agent platform combining a model gateway, knowledge assets, workflows and natural-language database queries.
Free stops at: Self-hosting from the public GitHub repository; license terms are in the ZGI Community License.
Pricing US price unconfirmed
Notion AI and Gemini Notebook both have free tiers in our data. Opal's Free Mode is capped at 1 workspace, 15 items and 100 MB.
Documented reasons: tight free limits, early-access invites in batches, bulk export listed as coming soon, and API access only on Complete System.
Notion AI Plus is $12 per member per month, or $10 billed yearly. Opal Core Essentials is $27 per seat per month, or $21 yearly.
Its starting paid price is not stated in our verified data; a free tier exists.
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