Monica vs Teya

Monica and Teya are both personal assistants tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

Monica

Monica runs as a browser extension on Chrome and Edge, plus desktop and mobile apps, giving you access to GPT-5, Claude, Gemini, and image/video generation models without leaving whatever tab you are already in. The sidebar handles webpage summarization, YouTube video highlights with timestamps, email reply drafts, PDF chat, and translation in a bilingual overlay. The agent layer — Browser Operator and Deep Research — can run tasks on its own and produce slide decks or analytical reports. There is no API, so anything you build with Monica stays inside Monica. Teams that need to pipe its output into their own systems hit a wall immediately.

Teya

Teya is an open-source, Android-based home agent that listens, holds context across conversations, and acts across apps — running on a spare phone mounted on a wall. There is no cloud subscription, no hosted API, and no vendor to call when it stops working: you own the stack. The README describes skills, a memory layer, and the ability to coordinate family schedules rather than just execute one-off commands. That self-contained architecture is also the ceiling — setup requires Android build tooling, and any skill that doesn't exist yet is yours to write. Families comfortable with a Gradle build and a spare Android device will find this fits a gap no commercial product fills; families who are not will hit a wall before the first reminder fires.

Attribute	Monica	Teya
Pricing	Paid	Free
Free trial	No	No
Open source	No	Yes
Has API	No	No
Self-hosted option	No	Yes
Platforms	Chrome, Edge, mobile app, desktop app	Android 8.0+
Pros	Model aggregation across GPT-5, Claude, Gemini, and image/video generators in one interface, so you avoid paying for and managing separate subscriptions when your workflow needs more than one model family. Browser sidebar that reads the active page directly, which means webpage summarization, translation, and email drafting happen in context without copying text into a separate tool. YouTube and video summarization with timestamps, so you extract the relevant segment of a two-hour recording without scrubbing through it manually. Deep Research agent that gathers sources and drafts structured reports on its own, so tasks that would take an analyst an afternoon get a first draft without step-by-step supervision. Cross-platform availability on extension, desktop, and mobile under one account, so your conversation history and bots follow you when you switch from browser to phone.	Persistent household memory across conversations, so the agent knows that Tuesday means football pickup without being re-briefed every week — which is the specific failure mode of every commercial smart speaker. Fully self-hosted on a spare Android phone with no cloud dependency, which means household calendar data does not leave your network and the agent does not stop working when a vendor's pricing changes. Apache-2.0 licensed with a configurable model layer per THIRD_PARTY_MODELS.md, so swapping the underlying LLM is a configuration change rather than a platform migration. Skills architecture described in the repo allows the agent's capabilities to grow, so a household that starts with reminders can extend to home-control tasks without replacing the platform. Zero infrastructure cost beyond the Android device, so there is no monthly bill eroding the case for keeping it running long-term.
Cons	No API means any output Monica produces is trapped inside Monica — teams that need to push summaries, translations, or agent reports into their own databases, Slack channels, or internal tools have to copy-paste by hand, and at that point they move to a tool with webhook or API support. No self-hosted option means every page Monica reads passes through the vendor's infrastructure — security and compliance teams at enterprises that prohibit third-party extensions from accessing internal tooling will block the extension before the trial ends. Agent and deep research runs are credit-gated on the free tier, so the feature that differentiates Monica from a basic chatbot hits a hard limit before producing anything of depth — free-tier users discover this mid-research task, not before starting it. The extension only supports Chrome and Edge, so teams standardized on Firefox or Safari cannot deploy it consistently across their workforce without requiring a browser switch.	Setup requires Android build tooling and Gradle configuration — there is no APK download or one-tap install described in the README. Any household member who is not the person who built it cannot recover from a broken state, which means a single point of failure sits between the family and their morning reminders. Any capability the agent does not already have requires writing a new skill, which means extending Teya for a genuinely new use case — say, integrating a specific calendar API or a home-automation system — puts you in the position of maintaining a fork. When that maintenance burden compounds across two or three extensions, teams move to a platform with a plugin marketplace rather than a skills directory they authored themselves. No API surface is available, per the project page, which means Teya cannot be called programmatically from other household tools or automation scripts. Households that want bidirectional integration with an existing Home Assistant setup or a third-party calendar service hit a dead end and either build a custom bridge or switch to a platform that exposes an API.

Bottom line

Monica is paid while Teya is free; Teya is open source. Choose based on which difference matters most for your workflow.

Frequently asked questions

What is the difference between Monica and Teya?

Monica is Paid, while Teya is Free and open source. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is Monica better than Teya?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.

Monica vs Teya: which should I pick?

Pick Monica if its pricing model, openness, or platform fit matches your constraints; pick Teya otherwise. Check free-trial availability on each listing if you want to test before committing.

Comparison data is sourced and verified by the AIDiveForge data pipeline. AIDiveForge is editorially independent.