Sintra Alternatives: 5 Tools Like Sintra AI for Small Business (Nov 2026)

Sintra sells 12 named AI helpers to small businesses. Five alternatives compared by how they run, open source status and price, checked 14 Nov 2026.

Chaitanya Giri 5 min read Comparisons
Title card on white. A pill reading Alternatives, the title Sintra alternatives, the line 5 tools like Sintra for small business and a Checked 14 Nov 2026 line. Five small tiles named Marblism, Munder Difflin, Lindy, Claude Cowork and Relevance AI slide in under a grey tile labelled Sintra.

Our view: Marblism is the closest Sintra alternative, because it also sells a cast of named AI employees to small business owners on one plan. Sintra gives you 12 helpers on the web and in mobile apps, paid up front for one, three or 12 months. Checked 14 Nov 2026.

We make Munder Difflin, which is free and open source: a desktop app that runs a team of AI agents for all kinds of knowledge work, coding included, on your own computer. Our own agents are in AI agent use cases from our office; more lists are in the Comparisons hub.

What is Sintra?

Sintra gives a small business a team of named AI employees, each with one job. Its help center, in an article dated 4 Sep 2026, says “At the center of everything is Brain AI, a shared knowledge hub that learns your brand voice, stores your documents, and keeps every AI employee aligned with your business.”

What do Sintra’s 12 helpers do?

Each helper owns one business job. The home page, read 14 Nov 2026, lists Buddy for business development, Cassie for support, Commet for eCommerce, Dexter for data, Emmie for email, Gigi as a growth coach, Penn for copy, Scouty for hiring, Seomi for SEO, Soshie for social media, Vizzy as an assistant and Milli for sales. You “Type your instructions into chat, and it’ll delegate to the best AI employee for the job”, per the pricing page.

Animation. On a white background, a pale mint café board with ink lettering, titled Sintra's 12 helpers, lists 12 names with a job beside each: Buddy Business development, Cassie Support, Commet eCommerce, Dexter Data, Emmie Email, Gigi Coach, Penn Copy, Scouty Hiring, Seomi SEO, Soshie Social, Vizzy Assistant and Milli Sales. A yellow marker draws a line under one row at a time. Tapping the board moves the line to the next name.
Sintra lists 12 named AI employees on its home page, read 14 Nov 2026.

How does Sintra run?

It runs in your browser and in mobile apps. The home page says “Available 24/7 on web and mobile”, and its help center links both app stores. Recurring tasks “can run as often as every 10 minutes.”

How much does Sintra cost?

Sintra sells one plan with all 12 helpers and 250 credits a month, paid up front. On 14 Nov 2026 the pricing page showed $15.60 a month on the 12 month plan, $23.60 a month on the 3 month plan and $48.50 for one month. It has a 14 day money back guarantee “(but no free trial)”. Big jobs use more: “Websites cost 30 credits for a simple build, and 300+ for more complex online stores.”

Animation. On a white background, a blue price gun clicks three times and stamps three paper tags onto a shelf: One month $48.50, 3 months $23.60 a month and 12 months $15.60 a month. A small green token marked 250 credits drops beside each tag. Tapping the shelf restamps the tags in order.
Sintra's three plan terms, each with 250 credits a month, per its pricing page, read 14 Nov 2026.

Can you bring your own model to Sintra?

Not for the 12 helpers. No Sintra page we opened on 14 Nov 2026 offers them a model choice or your own API key. The pricing page says its helpers beat “a standard chat model like ChatGPT, Claude, or Gemini”.

Why look for a Sintra alternative?

Sintra’s own pricing page lists when it “won’t work”, including “An Enterprise solution” and “A power tool with AI coding ability”. The prepaid terms and no free trial matter too. Otherwise, this list is for people comparing tools like Sintra before they pick.

What are the best Sintra alternatives?

Five tools, as of 14 Nov 2026. Each posted an update in the 30 days before.

Tool What it is How it runs Open source Price, 14 Nov 2026
Marblism 7 named AI employees Web and mobile apps Not stated $24 a month yearly; $44 monthly (14 Nov 2026).
Munder Difflin A team of AI agents for knowledge work, coding included Desktop app; Cloud Office Yes, MIT Desktop app free and open source.
Lindy One AI employee across your tools Slack, email, text, phone Not stated Team from $29.99 or $49.99 per user a month (14 Nov 2026).
Claude Cowork Claude doing longer tasks Desktop, web, mobile Not stated Claude Pro $20 billed monthly (14 Nov 2026).
Relevance AI Agent teams for large companies Web platform Not stated Enterprise only, no listed price.

1. Marblism: the closest match to Sintra

Marblism sells seven named AI employees on one plan. Its pricing page, read 14 Nov 2026, says “Plans start at $24/month on the yearly option”, and every plan includes all 7 employees and 50 hours of work. On 4 Nov 2026 it launched Rooms, where several employees and your teammates “work on the same project together.” Its own index ranks Marblism first and Sintra third, as self reviews do. We think it suits owners who want a phone receptionist; see Marblism alternatives.

2. Munder Difflin: a team of agents on your computer or in the cloud

Munder Difflin runs a team of AI agents for research, writing, ops and code. harnessmd.com, read 14 Nov 2026, says “Use subscriptions you already pay for to run agents in your personal simulation.” Its README that day says “each agent gets long-term memory, a mailbox, and a desk on a 2D office floor”. Work comes in from Slack or a webhook, and agents gain tools through MCP servers, skills and plugins. The Cloud Office runs your agents in the cloud, always on, so work goes on with your computer off; a mobile app is coming soon. Setup is in how to install and use Munder Difflin.

3. Lindy: one assistant with a model per task

Lindy is one AI employee across your tools, not a named cast. Its home page, read 14 Nov 2026, says “I work in Slack, email, text and your calendar, with 3,000+ integrations + MCP.” On 14 Nov 2026 the pricing page gave $50 in free credits for 7 days, then Team from $29.99 per user a month, or $49.99 in another version of the page, which lists “Choose your model for each task”. We think it suits small teams that live in Slack.

4. Claude Cowork: if you already pay for Claude

Cowork hands longer jobs to one assistant, Claude. Anthropic’s help page, read 14 Nov 2026, says it “brings Claude Code’s agentic capabilities to knowledge work beyond coding” and “runs your sessions remotely in the cloud”, on paid plans only. Claude’s pricing page listed Pro at $20 if billed monthly on 14 Nov 2026. We think it suits people already on Claude; see Claude Cowork alternatives.

5. Relevance AI: when you need the enterprise version

Relevance AI builds agent teams for larger companies, the case Sintra rules out. Its pricing page, read 14 Nov 2026, shows only an Enterprise plan, with “Talk to sales”. On 30 Oct 2026 its changelog let Enterprise admins “choose which models their organization can use”. We think it suits companies with an IT team.

How to choose

Match the tool to how your business works. Our view:

  • Marblism for a named cast with a phone receptionist.
  • Munder Difflin for a team of AI agents for research, writing, ops and code, on your computer or in the Cloud Office.
  • Lindy for one assistant across Slack, email and calls, with a model per task.
  • Claude Cowork if you already pay for Claude.
  • Relevance AI for an enterprise rollout with model controls.
  • Stay on Sintra for 12 helpers on one prepaid plan.
Animation. On a white background, a lilac sandwich board titled Pick your helper shows one line at a time in ink: Named cast: Marblism, Team of agents: Munder Difflin, Slack and calls: Lindy, Claude plan: Claude Cowork, Enterprise: Relevance AI, Stay on: Sintra. A small blue arrow slides down beside each line as it appears. Tapping the board flips it to the first line again.
Five Sintra alternatives, from pages read 14 Nov 2026.

FAQ

What is Sintra AI?

Sintra is a web and mobile app that gives a business 12 named AI employees, each with one job, such as Soshie for social media and Seomi for SEO. Its help center, in an article dated 4 Sep 2026, says Brain AI is "a shared knowledge hub that learns your brand voice, stores your documents, and keeps every AI employee aligned with your business."

How much does Sintra cost?

On 14 Nov 2026 its pricing page showed one plan at $15.60 a month for 12 months, $23.60 a month for 3 months, or $48.50 for one month, each paid up front with 250 credits a month. The page shows these as sale prices against $52, $59 and $97. There is a 14 day money back guarantee but no free trial.

Can you bring your own AI model to Sintra?

None of the Sintra pages we read on 14 Nov 2026 offer the 12 helpers a model choice or a way to add your own API key. Its pricing page argues its trained helpers beat "a standard chat model like ChatGPT, Claude, or Gemini". Lindy's Team plan lists "Choose your model for each task", and harnessmd.com, read 14 Nov 2026, says of Munder Difflin: "Use subscriptions you already pay for to run agents in your personal simulation."

What is the closest alternative to Sintra?

Our view: Marblism, because it also sells a cast of named AI employees to small businesses on one plan, seven of them, from Eva for the inbox to Rachel on the phone. Its pricing page showed $24 a month billed yearly and $44 monthly on 14 Nov 2026. Munder Difflin is the pick if you want a free, open source team of agents instead.

Is there a free Sintra alternative?

Yes. Lindy starts you with $50 in free credits that last 7 days, per its pricing page read 14 Nov 2026. Munder Difflin is free and open source: a desktop app that runs a team of AI agents for all kinds of knowledge work, coding included, on your own computer. Sintra itself offers a 14 day refund window, not a free trial.