Viktor is an AI employee from Zeta AI that lives in Slack and Microsoft Teams. It works on its own cloud computer, connects to over 9,800 tools, writes and runs code, builds reports and web apps, and runs scheduled tasks. One Viktor serves a whole workspace.

How much does Viktor cost?

It starts free with up to $100 in credits. Team plans run from $50 a month for 20,000 credits, with $100 for 40,000 the most popular, shared across the workspace with no per-seat fee; Enterprise is custom. The MausBot app is free; your bots run on the Claude, ChatGPT or Grok account, or the API key, you already have.

Is Viktor open source?

No. Viktor is a closed, hosted service. MausBot is open source, Apache 2.0 on GitHub apart from an enterprise/ folder, and self-hosting it on your own server is free.

Can a team share MausBot the way it shares Viktor?

Yes. MausBot Cloud has a Team plan at $169 a month for up to 5 people and a Business plan at $599 for up to 20, with shared team memory, or Business self-hosted at $299. AI model usage is not included in any plan.

Comparison as of November 15, 2026, with both products as they were that day · Zeta AI, Inc.

Viktor alternative: MausBot

A Viktor alternative that is open source: a team of the AI agents you already have, on your own computer. Viktor is an AI employee for Slack and Teams.

Viktor, from Zeta AI, is one shared AI employee for a whole company that lives in Slack and Microsoft Teams, works on its own cloud computer across 9,800 connected tools, and costs from $50 a month per workspace after a free start. MausBot is the open source Viktor alternative: one team of the AI agents you already have, each bot with its own model and computer.

What Viktor is

Viktor calls itself an AI employee: one generalist hire for the whole company that you brief in Slack or Microsoft Teams, or in its web, desktop and Android apps and on Discord. It has its own cloud computer where it writes and runs code, connects to over 9,800 tools, builds reports, dashboards and deployed web apps, opens pull requests, and runs scheduled tasks. It learns your team's ways as skills, including from a screen recording, and sensitive actions such as sending email or deploying wait for approval. Models come from OpenAI, Anthropic and others, picked per chat, channel or task, or through your own OpenRouter key. Zeta AI, founded by former Meta engineers Fryderyk Wiatrowski and Peter Albert, launched Viktor publicly in February 2026 and raised a $75 million Series A led by Accel in May.

Launched: Public launch February 2026. Sources: Viktor; Viktor: pricing; Viktor: product; Viktor: security; Viktor: changelog; Viktor: impressum; Fortune: Viktor raises $75 million; TNW: Viktor takes $75m from Accel.

Why people look for a Viktor alternative

One shared Viktor per workspace: everyone shares its context, and private per-person conversations wait on a Private Mode that is still being built.
Every task, scheduled ones included, spends credits; Fortune reported that credit-based pricing can be costly depending on usage, and that some teams spend more on Viktor than on a junior hire.
Built around Slack and Microsoft Teams: Viktor says the full experience, approvals included, is there, while its web and desktop apps carry the rest.
Closed and hosted: work runs in Viktor's cloud, US-hosted by default, with EU data residency only on Enterprise contracts.
Models are billed through Viktor's credits or an OpenRouter key; its pages describe no way to use a Claude or ChatGPT plan you already pay for.
Disconnecting an integration does not erase what Viktor learned from it; that needs a Clean Workspace reset.

Viktor vs MausBot

The Viktor column comes from the vendor's own pages and the press cited above, checked on November 15, 2026. Where the vendor has not said, the cell says so.

	Viktor	MausBot
Price	Free with up to $100 in credits; Team from $50 a month for 20,000 workspace credits ($100 for 40,000); Enterprise custom; no per-seat fee	Free and open source. Bots run on the Claude, ChatGPT or Grok account, or the API key, you already have
Models	Claude, GPT, Grok and more in a picker per chat, channel or task; or your own OpenRouter key	16 agent engines (Claude Code, Codex, Grok, Cursor, Copilot and more), API and local models; chosen per bot, switchable mid-conversation
Agents	One shared AI employee per workspace	As many bots as you like, in group chats, with a Chief of Staff that hands out work
Where it runs	Viktor's cloud: an isolated computer where it writes and runs code; US-hosted by default	Your own computer or server; cloud computers with a live desktop on a Cloud plan
Where your data lives	Viktor's cloud, isolated per workspace; no training on customer data; EU residency on Enterprise	~/.openmausbot on your own machine; prompts go only to the model provider you choose
Before it acts	Asks before sending email, pushing code, changing ads or charging a card; admins choose which actions need approval	Full access by default, or Ask, Auto-accept edits or Approve for me per bot; sends can be set to ask every time
Platforms	Slack, Microsoft Teams, Discord; web, desktop (Mac, Windows, Linux) and Android apps	macOS, Windows, Ubuntu; iPhone and Android apps
Apps and tools	9,800+ tools, custom integrations, and an email inbox	Gmail, Slack, Notion, LinkedIn and hundreds more apps, any MCP server, and bots' own numbers and inboxes
Open source	No	Yes. Apache 2.0 on GitHub, apart from an enterprise/ folder

What MausBot is

MausBot is a free, open-source app that runs a team of the AI agents you already have. Each bot has its own model, computer and connected apps, on Claude Code, Codex, Grok, Cursor, Copilot and other agent engines, API models or local models, using the accounts you already pay for. A Chief of Staff bot hands work to the others, bots share group chats, and every bot reads your About me. It runs on Mac, Windows and Ubuntu with iPhone and Android apps, keeps your data in ~/.openmausbot on your own machine, and is published on GitHub under Apache 2.0. You can self-host it free on your own server, and Cloud plans from $15 a month keep bots working with the laptop closed.

What Viktor still does better

Built for a whole company in Slack and Microsoft Teams: anyone can mention @Viktor, admins set which actions need approval, with SAML SSO and SOC 2 Type 1.
Over 9,800 tool connections, and it can build a custom integration when one is missing.
Builds and deploys web apps with a database and sign-in, and opens pull requests on your repositories.
Credentials never reach the model: a tool gateway adds keys and tokens at run time.
Pricing per workspace, not per seat, with up to $100 of free credits and unused monthly credits rolling over.

Other Viktor alternatives

MausBot is the open-source option. The other agents in this category, each with its own comparison page:

Grok Bot by xAI: Grok Bot opened as a beta on August 11, 2026 and reached version 1.0 on November 2, 2026.
OpenAI dots by OpenAI: Dots launched on September 29, 2026.
ChatGPT Work by OpenAI: ChatGPT Work is an agent inside ChatGPT that OpenAI launched on July 9, 2026, built on Codex technology.
Meta Muse by Meta: Muse launched on September 8, 2026.

Every other comparison page: Grok Bot, OpenAI dots, ChatGPT Work, Meta Muse, Claude Cowork, Claude Duet, Gemini Spark, Perplexity Computer, Manus, Cue by Manus, Instinct, Poke, Lindy, Squad, Turnstone, Bops, Hark Pro, OpenClaw, Hermes Agent, Vellum, Open Dots, OpenBot, Rakazo, OpenMuse, OpenInstinct.

Frequently asked questions

What is Viktor?: Viktor is an AI employee from Zeta AI that lives in Slack and Microsoft Teams. It works on its own cloud computer, connects to over 9,800 tools, writes and runs code, builds reports and web apps, and runs scheduled tasks. One Viktor serves a whole workspace.
How much does Viktor cost?: It starts free with up to $100 in credits. Team plans run from $50 a month for 20,000 credits, with $100 for 40,000 the most popular, shared across the workspace with no per-seat fee; Enterprise is custom. The MausBot app is free; your bots run on the Claude, ChatGPT or Grok account, or the API key, you already have.
Is Viktor open source?: No. Viktor is a closed, hosted service. MausBot is open source, Apache 2.0 on GitHub apart from an enterprise/ folder, and self-hosting it on your own server is free.
Can a team share MausBot the way it shares Viktor?: Yes. MausBot Cloud has a Team plan at $169 a month for up to 5 people and a Business plan at $599 for up to 20, with shared team memory, or Business self-hosted at $299. AI model usage is not included in any plan.

This comparison is based on Viktor and MausBot as they were on November 15, 2026. Both products change. If something here is out of date, tell us and we will correct it.