# Monica Alternatives 2027: 11 Paid, Free & Open-Source

Source: https://zekaiwork.com/alternatives/monica/
Prices checked: 2026-11-12 (Zekai Price Ledger)

The best Monica alternatives in 2027 are Sider AI (best overall, $8.33/mo billed yearly), MaxAI (best free plan) and NextAI Translator (best open source, AGPL-3.0). Monica itself starts at $8.3/mo billed yearly. Zekai checked these prices on vendor pages on 12 Nov 2026; 8 more are compared below, including 4 with a free plan and 2 open source.

| Tool | Type | Starting price | Free plan limit | Licence | Best for | Price checked | Links |
|---|---|---|---|---|---|---|---|
| Monica (the tool being replaced) | — | $8.3/mo billed yearly | 40 basic-model accesses a day | — | — | 2026-11-12 | [pricing](https://monica.im/pricing) |
| Sider AI | Paid | $8.33/mo billed yearly | No free plan | — | Sidebar plus Hand browser agent | 2026-11-12 | [site](https://sider.ai) [pricing](https://sider.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/sider-ai/) |
| MaxAI | Free plan + paid | $12/mo billed yearly | Unlimited free chat on a fast model; 3 Pro chats a day | — | Per-member team plan with a free tier | 2026-11-12 | [site](https://www.maxai.co) [pricing](https://www.maxai.co/pricing/) [Zekai page](https://zekaiwork.com/ai-tools/maxai/) |
| Merlin | Free plan + paid | $19/mo billed yearly | Limited access to basic models and 70+ AI tools | — | Unlimited basic models plus 70-plus tools | 2026-11-12 | [site](https://www.getmerlin.in) [pricing](https://www.getmerlin.in/pricing) |
| Harpa AI | Paid | Not checked | No free plan | — | Browser automation with your own API keys | 2026-11-12 | [site](https://harpa.ai) [pricing](https://harpa.ai/pricing) [Zekai page](https://zekaiwork.com/ai-tools/harpa-ai/) |
| Gemini | Free plan + paid | $4.99/mo | Free with a Google Account | — | Cheapest paid tier, Google-integrated | 2026-11-12 | [site](https://gemini.google) [pricing](https://gemini.google/us/subscriptions/?hl=en) [Zekai page](https://zekaiwork.com/ai-tools/gemini/) |
| Claude | Free plan + paid | $17/mo billed yearly | Limited usage every 5 hours and every week | — | Single-vendor assistant with Claude in Chrome | 2026-11-12 | [site](https://claude.ai) [pricing](https://claude.com/pricing) [Zekai page](https://zekaiwork.com/ai-tools/claude/) |
| Microsoft Copilot | Paid | $19.99/mo | No free plan | — | Copilot bundled with Microsoft 365 apps | 2026-11-12 | [site](https://copilot.microsoft.com) [pricing](https://www.microsoft.com/en-us/copilot/solutions/individuals) [Zekai page](https://zekaiwork.com/ai-tools/microsoft-copilot/) |
| ChatGPT | Free plan + paid | $6/mo | Unlimited text chats with GPT-6; limited uploads, images, voice | — | OpenAI-only assistant with a $6 tier | 2026-11-12 | [site](https://chatgpt.com) [pricing](https://chatgpt.com/pricing) [Zekai page](https://zekaiwork.com/ai-tools/chatgpt/) |
| NextAI Translator | Open source | Free (self-hosted) | No limit (self-hosted) | AGPL-3.0 | Open-source in-page translation extension |  | [code](https://github.com/nextai-translator/nextai-translator) [Zekai page](https://zekaiwork.com/free-open-source/nextai-translator/) |
| LibreChat | Open source | Free (self-hosted) | No limit (self-hosted) | MIT | Self-hosted chat across many providers |  | [code](https://github.com/LibreChat-AI/LibreChat) [Zekai page](https://zekaiwork.com/free-open-source/librechat/) |
| Chatbox | Open source | Free (self-hosted) | No limit (self-hosted) | GPL-3.0 | Desktop AI client for keys or local models |  | [code](https://github.com/chatboxai/chatbox) [Zekai page](https://zekaiwork.com/free-open-source/chatbox/) |

## How each alternative compares with Monica

- **Sider AI** (Paid, $8.33/mo billed yearly, checked 2026-11-12): Sider's page lists Nano at $10 monthly, with Hand (a browser agent), Code and Create, and Lite and higher plans add a dedicated cloud computer with 2 vCPU, 2 GB RAM and 40 GB SSD. Switch if you want an agent that fills forms and researches across real websites on a cloud computer. Stay with Monica if you prefer a fixed 5,000 basic and 200 advanced query allowance on a $99 yearly plan.
- **MaxAI** (Free plan + paid, $12/mo billed yearly, checked 2026-11-12): MaxAI's Free plan gives unlimited chat on a fast model with 3 Pro chats a day, and its Pro plan is billed per member with team member management. Switch if you need per-member billing for a team and unlimited chat on a fast free model. Stay with Monica if you want a one-person plan with images, slides and Deep Research agents under one credit pool.
- **Merlin** (Free plan + paid, $19/mo billed yearly, checked 2026-11-12): Merlin's Pro is billed at $228 a year with unlimited basic-model use and 50x usage on Plus-level models, while its Free plan limits models, tools and extension features. Switch if you want unlimited basic-model chat and a long menu of single-purpose AI tools. Stay with Monica if you want Monica's slides, Deep Research and Browser Operator agents in the plan.
- **Harpa AI** (Paid, Not checked): HARPA sells a one-time lifetime plan that connects your own ChatGPT, Claude or Gemini web sessions or API keys, and lists token balances in megatokens per year. Switch if you want to bring your own API keys or web sessions and pay once for a lifetime licence. Stay with Monica if you want hosted model access and image generation without supplying any keys.
- **Gemini** (Free plan + paid, $4.99/mo, checked 2026-11-12): Gemini's Google AI Plus is $4.99 a month for 2x the free usage, and AI Pro is $19.99 for 4x; all plans require a Google Account and only use Google models. Switch if you want the lowest paid price and already work inside a Google Account. Stay with Monica if you want GPT, Claude and Gemini models side by side in one sidebar.
- **Claude** (Free plan + paid, $17/mo billed yearly, checked 2026-11-12): Claude's Pro includes Claude in Chrome and Microsoft 365 connection, and Max adds 5x Pro usage at $100 a month; every plan uses Anthropic models only. Switch if you accept one model family and want its Chrome extension bundled with chat and Projects. Stay with Monica if you want GPT and Gemini models selectable in the same sidebar.
- **Microsoft Copilot** (Paid, $19.99/mo, checked 2026-11-12): Microsoft 365 Premium lists Copilot with Office apps at $19.99 a month, Personal from $9.99 and Family at $12.99; it is an Office bundle rather than a browser sidebar. Switch if you already pay for Office apps and want Copilot included in the same subscription. Stay with Monica if you only need a page-aware browser sidebar with several vendors' models.
- **ChatGPT** (Free plan + paid, $6/mo, checked 2026-11-12): ChatGPT's Free plan gives unlimited text chats with GPT-6, and the Go plan at $6 a month may include ads; it runs in the ChatGPT app, not as a page sidebar. Switch if you want OpenAI models only and a $6 entry plan for everyday chat. Stay with Monica if you want an assistant that sits beside the open tab and summarises it in place.
- **NextAI Translator** (Open source, Free (self-hosted)): NextAI Translator is an AGPL-3.0 browser extension and desktop app for ChatGPT-powered translation, covering one Monica function rather than chat, agents and image tools. Switch if translating selected text is your main use and you accept AGPL code with your own key. Stay with Monica if you need summaries, ChatPDF and agents in the same sidebar.
- **LibreChat** (Open source, Free (self-hosted)): LibreChat is an MIT-licensed self-hosted chat site that connects several providers with agents and MCP, but it is a web app you open, not an extension on top of the page. Switch if you want to host multi-model chat yourself and control where conversations are stored. Stay with Monica if you want a sidebar that reads the current page without hosting a server.
- **Chatbox** (Open source, Free (self-hosted)): Chatbox is a GPL-3.0 desktop client for several providers and local models; it runs as a separate window, so it does not read the open browser tab. Switch if you want a free desktop client using your own keys or local models. Stay with Monica if you want the assistant inside the browser reading the tab you have open.

## Open-source options in detail

- **NextAI Translator** (https://github.com/nextai-translator/nextai-translator): Licence: AGPL-3.0
- **LibreChat** (https://github.com/LibreChat-AI/LibreChat): Licence: MIT
- **Chatbox** (https://github.com/chatboxai/chatbox): Licence: GPL-3.0

## Questions

### What is the best alternative to Monica in 2027?
Sider AI is the best overall Monica alternative on this page ($8.33/mo billed yearly). For no cost, MaxAI has a free plan (Unlimited free chat on a fast model; 3 Pro chats a day). To self-host, NextAI Translator is open source (AGPL-3.0).

### Is there a free version of Monica?
Yes. Monica has a free plan: 40 basic-model accesses a day. Paid plans start at $8.3/mo billed yearly, checked on 12 Nov 2026.

### Is there a 100% free alternative to Monica?
Yes. NextAI Translator, LibreChat, Chatbox are open source and free to self-host. MaxAI, Merlin, Gemini, Claude, ChatGPT have a free plan with limits, shown in the table.

### What is cheaper than Monica?
Gemini starts at $4.99/mo, against $8.3/mo billed yearly for Monica, as listed on each vendor's pricing page on 12 Nov 2026.

### How much do Monica alternatives cost for a team of 5?
If each of 5 people buys the entry paid plan, at the prices Zekai checked on 12 Nov 2026, the monthly cost is Gemini $24.95/mo, ChatGPT $30/mo, Sider AI $41.65/mo, against Monica $41.50/mo for Monica. Team and business plans can cost more per seat. The Zekai Cost Finder on this page recalculates for any team size.

### Which is better, Sider AI or Monica?
Sider's page lists Nano at $10 monthly, with Hand (a browser agent), Code and Create, and Lite and higher plans add a dedicated cloud computer with 2 vCPU, 2 GB RAM and 40 GB SSD. Choose Sider AI if you want an agent that fills forms and researches across real websites on a cloud computer. Stay with Monica if you prefer a fixed 5,000 basic and 200 advanced query allowance on a $99 yearly plan.

### Why are people leaving Monica?
The documented reasons are: Monica's Advanced Credit rules, effective 2 January 2026, give Pro 1,500, Max 4,500 and Ultra 20,000 credits a month, with Free users getting none; extra packs start at 4,000 credits for US$10 (2 Jan 2026); Monica's pricing page shows Max at US$16.6 a month billed yearly (US$199, struck through from US$299) under a Flash Sale 33% label, so list prices can move (12 Nov 2026). Each is sourced in the section above.

### What are the best Monica AI alternatives?
Sider AI is the closest sidebar with a browser agent, MaxAI suits teams that want per-member billing and a free plan, and Gemini or Claude fit if you prefer one vendor's own assistant.

## Related on Zekai

- [Sider AI alternatives](https://zekaiwork.com/alternatives/sider-ai/)
- [Gemini alternatives](https://zekaiwork.com/alternatives/gemini/)
- [Claude alternatives](https://zekaiwork.com/alternatives/claude/)
- [Microsoft Copilot alternatives](https://zekaiwork.com/alternatives/microsoft-copilot/)
- [ChatGPT alternatives](https://zekaiwork.com/alternatives/chatgpt/)
- [AI for Personal Productivity & Executive Assistants](https://zekaiwork.com/professions/ai-personal-productivity-executive-assistants/)

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Live table, team cost finder and price alerts: https://zekaiwork.com/alternatives/monica/