Mnemosphere
AI research workspace with every frontier model under one roof, for parallel comparison.
At a glance
Price not confirmed · Source review 2026-11-04- Price & billing
No charge fact is recorded: plan amounts appear in $ without a named currency in the text read. The homepage states plans start from $25 per month with cancel-anytime terms, and the FAQ states there is no free plan.
- Free allowance
The homepage states plans start from $25 per month with cancel-anytime terms, and the FAQ states there is no free plan.
- Best suited to
Researchers, founders, PMs, and analysts who want to compare frontier models side by side on the same prompt.; Users who want parallel prompts, one-click mindmaps, one-click critique, and follow-ups across every selected model.
Fit is editorial guidance, not a measured result.- Platforms
Access: not separately verified. Operating systems not separately verified.
Published-source facts and editorial guidance. No product test is implied. Confirm current conditions before purchase.
No product screenshot is claimed for this listing. Use the official website ↗ to inspect the current interface.
What to know before choosing
Good fit
Researchers, founders, PMs, and analysts who want to compare frontier models side by side on the same prompt.; Users who want parallel prompts, one-click mindmaps, one-click critique, and follow-ups across every selected model.
Limits and trade-offs
Users looking for a free tier, since the FAQ states Mnemosphere is a professional tool with paid plans only and no watered-down free tier.; Users who need a single-model subscription, since Mnemosphere sells access to every frontier model as one workspace.
Plans and free allowances
No charge fact is recorded: plan amounts appear in $ without a named currency in the text read. The homepage states plans start from $25 per month with cancel-anytime terms, and the FAQ states there is no free plan.
Evidence
Official homepage ↗ (reviewed 2026-11-04)
Official published documentation reviewed; not a product test
Dates: Last reviewed 2026-11-04. Last reviewed is the latest source or editorial review date; it is not a content-change date.
A closer look at Mnemosphere
Mnemosphere is an AI research workspace that puts the best models of every AI lab in one ultra-productive chat interface, with multi-model comparison, parallel prompts, mindmaps, and prompt assist. The homepage FAQ states plainly that there is no free plan: it is a professional tool with paid plans only, starting at $25 per month.
Editorial guidance based on published documentation. The workflow below is a suggested starting point, not a measured product result.
When to choose Mnemosphere
- Researchers, founders, PMs, and analysts who want to compare frontier models side by side on the same prompt.
- Users who want parallel prompts, one-click mindmaps, one-click critique, and follow-ups across every selected model.
When to choose something else
- Users looking for a free tier, since the FAQ states Mnemosphere is a professional tool with paid plans only and no watered-down free tier.
- Users who need a single-model subscription, since Mnemosphere sells access to every frontier model as one workspace.
A practical starting workflow
- Open the workspace and send one prompt to several frontier models at once.
- Compare the responses side by side, follow up freely, and let every selected model respond to every follow-up.
- Turn the comparison into a mindmap, critique, or notes, and keep researching in the same workspace.
Check before committing
- Plan amounts appear in $ without a named currency in the text read, so no paid-tier charge fact is recorded; the guessed pricing path returns only a title, so pricing detail comes from the homepage.
- Review is limited to the official homepage text read on 2026-11-04; no product run, no account, no purchase.
Common questions
Is there a free plan?
No: the FAQ states Mnemosphere is a professional tool with paid plans only, starting at $25 per month, with full access to every frontier model and every feature.
What models are included?
The homepage lists GPT, Claude, Gemini, DeepSeek, Grok, and Sonar models, with every frontier model available the moment it ships.
What makes it more than a chat wrapper?
Multi-model streaming, one-click mindmaps, one-click critique, parallel prompts, highlighter plus notes, and YouTube chat, according to the homepage.
Compare approaches for this task
- Mochii AI — Users who switch between GPT, Claude, and Gemini and want them in one extension and web app.; People building custom AI characters or knowledge-based chatbots without juggling several subscriptions.
- MiroThinker — Developers and analysts who want an agentic solver for structured, multi-part questions in technical or regulated domains.; Users who want to try a solver daily on the Free plan before paying for a larger monthly credit allowance.
Sources and checks
Last source review is not a date of product testing. No rating or test result is implied by inclusion. Check the current plan and terms before buying.