Desktop and local
Memory you own locally, or an agent that acts?
Side by side
Tallis’s column describes its planned offer. Competitor capabilities are attributed to the sources cited, not independently tested. “Not verified” does not mean unavailable.
| What matters | Tallis Planned offer | solstone (sol pbc) Public information |
|---|---|---|
| Built around | One person: a solo founder or operator, with private ongoing context. [T] | Open-source local-first memory for personal agents. [1] [2] |
| How you work | A continuing conversation through Telegram and a web chat, without running your own agent. [T] | Software you run on your own hardware. [1] [2] |
| Work to hand over | Recurring research, drafted communication and controlled upkeep of existing accounts and sites. [T] | Keeping a personal memory that agents can read; it does not perform tasks. [1] [2] |
| Control over actions | Exact previews in Preview mode; policy-based Guardrails and Autopilot, with pause and records of outcomes. [T] | Your hardware, your data; irrevocable no-sale covenants in the company’s articles. [1] [2] |
| Access and cost | Waitlist. Confirm launch pricing and workflow availability before subscribing. [T] | Open-source core, free; a services page exists. No price published on 2026-09-10. [1] [2] |
Which fits you?
Consider solstone if you want a memory you own outright and are willing to run it. Consider Tallis if you want an agent that does work, with memory you can inspect and delete inside your cell. This is not a rivalry; a Tallis cell reading a solstone journal with your consent is a plausible future.
This is our assessment of fit. We have not run a head-to-head performance or reliability test.
Try this before deciding
Suggested evaluation steps, not a test we have performed.
Before you choose
For solstone it is the product: a memory you own, with covenants about never selling it. For Tallis memory is part of the agent, kept inside your cell with inspection and deletion. If you want both, ask whether they can talk to each other. [1] [2]
We checked the cited material on 2026-09-10. Prices, availability and features may change. Confirm the terms and the exact workflow with the provider before committing.
Published by Tallis, one of the products compared. This is an editorial comparison of public information, not an independent product audit. We separate published claims, our planned offer and our assessment of fit.
Tallis is being built for a solo founder or operator: private ongoing context, included model access, recurring research, and controlled actions in connected accounts. Telegram and a web chat are the launch channels. Preview requires an exact preview and approval. Guardrails and Autopilot use the permissions you set; every mode retains pause and records of outcomes.
Access is currently by waitlist. These launch intentions are not a claim that every workflow is available today. Shared teams, an app-builder marketplace and unrestricted purchases are outside the initial offer. See Tallis.
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Your work. A little more yours.
Tallis is taking waitlist signups. Get an update when access opens.