Seven Sintra alternatives scored on one test: who finishes a multi-step job across your tools. Plans, limits and verbatim reviews, checked October 2026.
The seven Sintra alternatives on this page are Viktor, Lindy, Marblism, Motion, Gumloop, Relevance AI and ChatGPT, scored on one test: what happens when a multi-step job crosses tool boundaries, such as a Shopify dispute that needs the order, a Gmail reply, a HubSpot note and a Slack summary. Viktor publishes this page.
What Sintra AI is and where it stops
Sintra sells 12 named helpers, which it calls AI employees, in one platform: Buddy, Cassie, Commet, Dexter, Emmie, Gigi, Penn, Scouty, Seomi, Soshie, Vizzy and Milli, per sintra.ai. The page says every AI worker runs as a chatbot, that Brain AI provides “One memory across your whole team”, and that setup includes a step to “Set priorities, guidelines, and approval levels.”
Integrations connect with one click and are wired to the specialist that uses them, per the Sintra integrations page, which lists Gmail, Outlook, Notion, Slack, HubSpot, Salesforce, Shopify, QuickBooks and others.
Plans, per Sintra’s pricing page and the Sintra help center: Sintra X, with all 12 helpers, 250 monthly credits, 15+ integrations, 24/7 support and a 14-day money-back guarantee, sold at $48.50 a month for 1 month (shown as 50% off $97), $23.60 a month for 3 months ($70.80 upfront, per the help center) or $15.60 a month for 12 months ($187.20 upfront, per the help center). Sintra’s help center says it no longer sells individual AI employee plans, so Sintra X is the plan on sale; terms are paid upfront plus VAT, and the 250 credits power advanced AI usage and reset monthly.
Pricing checked October 2026.
Where it stops: as its pages describe it, each Sintra helper runs as its own chatbot with the tools assigned to it. Brain AI is the memory the helpers share; who carries a job from one helper to the next is the question this page puts to every alternative.
Is Sintra AI worth it?
Verbatim from reviews published on the Trustpilot page for sintra.ai between 13 and 15 January 2026, as captured by the Internet Archive on 15 January 2026, with each reviewer’s star rating. The page carried a TrustScore of 4.5 from 7,544 reviews at that date.
Praise:
- Five stars, 14 January: “Sintra has been a huge time saver for my business. It drafts replies to emails automatically, understands my tone of voice, and handles things like calculations and follow-ups that used to take up far too much time.”
- Four stars, 13 January: “For analytics and just getting me to think in more detail about my business it delivers well and truly.”
Complaints:
- Two stars, 14 January, on a marketing plan that spanned helpers: “It does not speak to the other team members as seamlessly.”
- Four stars, 13 January, on Brain AI: “this is frustrating when I am reloading into a chat what I have already put in the brain.”
- One star, 14 January: “My credits are gone and I get an error when I want to add more credits.”
Sintra alternatives at a glance
Alternative | Best for | How a multi-step job across tools is handled | Who finishes the job |
|---|---|---|---|
1. Viktor | Companies in Slack or Microsoft Teams | One request; Viktor works across 9,800+ tools, with an approval card before sensitive actions | Viktor, once a person approves the sensitive steps |
2. Lindy | Slack teams wanting per-user seats and meeting notes | One Lindy across 1,500+ integrations; outside-impact actions wait for approval | Lindy, after each approval |
3. Marblism | Owners wanting fixed roles for inbox, socials, SEO, leads and calls | Seven AI employees, one per function; they check in for approval | The role’s AI employee |
4. Motion | Teams whose work lives in a project and calendar tool | AI plans tasks, projects, docs and meetings inside Motion | Motion inside Motion; you outside it |
5. Gumloop | Teams building their own agents | You build an agent per job; it runs on triggers across 300+ connectors, with spend caps on Enterprise | The agent you built |
6. Relevance AI | Enterprises buying a sales-led AI workforce | A deployment team builds agent teams with human-in-the-loop approvals | The agent team you deploy |
7. ChatGPT | Individuals wanting a general chat tool | Chat, projects, scheduled tasks and custom GPTs on Plus; an always-on agent on Pro | You, from the chat output |
What are the alternatives to Sintra AI?
1. Viktor
Viktor is one AI employee you describe the whole workflow to in Slack or Microsoft Teams, and he finishes it across your tools, with approval before sensitive actions.
Quick facts, all from viktor.com: 9,800+ tools, 27 of them native, most through one-click OAuth and some through API keys, with custom integrations built on request, per the integrations page. Money moves, code pushes and customer emails wait for explicit approval in Slack, per Viktor security, and admins can gate any individual tool, per the approvals docs. Usage-based credits per workspace, no per-seat fee, and up to $100 in free credits with no card, per Viktor pricing. SOC 2 Type 1 certified, SOC 2 Type 2 and ISO 27001 in progress, CASA Tier 3; customer data never trains a model, and a tool gateway injects API keys at execution time so the model never sees them. Preferences and corrections are saved in skills in the same run, per the personalization docs, and recurring work runs as Tasks, per the proactive updates docs.
Cross-tool job: one message. “@Viktor, this customer was charged twice. Pull the order from Shopify, draft the Gmail reply, add a note to the HubSpot contact and post a summary here.” He would draft the reply and the note and post an approval card for the customer email, all in the thread.
Pros: one unit of work for the whole job; approvals inside Slack and Teams; no per-seat fee. Cons, as stated: web chat is for workspaces that already use Viktor in Slack, not yet Teams-only ones, per the web app docs; SOC 2 Type 2 and ISO 27001 are in progress; Teams approval cards have no always-approve option.
Add Viktor to Slack or Microsoft Teams, free to start →
2. Lindy
lindy.ai says “Lindy is your AI teammate that plugs into your tools, learns how you work, and takes real work off your plate.” It lists Gmail, Slack, Notion, HubSpot and 1,000+ more integrations with MCP support, scheduled routines and memory kept in plain files you can edit.
Per the Lindy pricing page: Free with $50 in credits for 7 days, no card; Team, billed per active user from $29.99 a month for 3,000 credits and rising with the credit volume you pick (15,000 credits for $99.99, 35,000 for $199.99); and Enterprise, custom, adding HIPAA with a signed BAA, SSO and SCIM, and audit logs. Credits pool across seats and do not roll over. The page lists 1,500+ integrations, approvals built in, and SOC 2 and GDPR compliance.
Cross-tool job: the FAQ says anything with outside impact, such as sending an email, updating a ticket or publishing a doc, waits for approval; read-only lookups from approved sources do not.
Pros: Slack-native in threads and mentions; per-action approvals. Cons, as stated: per-seat billing, and anyone who @mentions Lindy in Slack takes a seat, after a 7-day free trial for teammates who join through Slack; free credits expire after 7 days; HIPAA, SSO and audit logs are Enterprise only. More options are in Lindy alternatives.
3. Marblism
Marblism sells seven named AI employees: Eva (executive assistant), Sonny (social media), Stan (lead generation), Penny (SEO), Rachel (receptionist), Walter (website builder) and Linda (legal assistant). marblism.com says they run your inbox, socials, SEO, lead generation, calls and support, integrate with Gmail, Outlook, Instagram, Facebook, X, LinkedIn and Google Calendar, and check in only when they need your input or approval.
Per the Marblism pricing page: one plan with all seven at $24 a month billed yearly or $44 monthly, 50 hours of AI work a month consumed only by advanced actions, unlimited businesses and team members, and a 7-day money-back guarantee. Security is described as a TAC Security Group certification under the ESOF framework.
Cross-tool job: the closest model to Sintra’s, one AI employee per function; the pages describe no handoff between the seven, so a job that spans roles is yours to split.
Pros: fixed price with unlimited team members and businesses; a phone receptionist and a website builder. Cons, as stated: 50 hours of advanced actions a month; the integrations the page names are email, social and calendar tools, plus “many more” it does not list.
4. Motion
Motion is a work-management app with AI features rather than a roster of personas. usemotion.com calls it “The #1 Rated Productivity Platform for the AI Era” and lists an AI Task Planner, AI Project Manager, AI Docs Assistant, AI Calendar Assistant, AI Meeting Notetaker and AI Workflow Builder. Zapier, HubSpot, Salesforce, Teams and Slack are named as integrations, and the site states SOC 2 Type 2 compliance with data encrypted in transit and at rest.
Per the Motion pricing page, on its Teams tab: Pro AI at $19 per seat per month billed annually or $29 monthly ($29 and $49 on the Individuals tab), with 7,500 AI credits per seat per month; Business AI at $29 annually or $49 monthly ($39 and $69 for individuals), with 15,000 credits plus capacity planning, dashboards, Gantt charts and permissions. Both plans start with a free trial.
Cross-tool job: Motion’s AI, as its pages describe it, works on objects inside Motion while outside tools feed tasks and meetings in; doing the refund in Shopify, Gmail and HubSpot is outside what the pages describe.
Pros: tasks, projects, docs, calendar and notes in one place; a free trial; SOC 2 Type 2. Cons, as stated: per-seat pricing with metered AI credits; the AI plans a cross-tool job rather than doing it in your other tools.
5. Gumloop
Gumloop is an agent builder. gumloop.com is headed “Build, share, optimize & control agents” and lists app triggers, recurring tasks, 300+ connectors, skills, artifact building and @mentioning an agent in any Slack channel or thread. The Gumloop enterprise page states SOC 2 Type II, GDPR, VPC deployment, SAML SSO and SCIM, and spend caps with approvals for costly actions.
Per the Gumloop pricing page: Pro starts at $37 a month with a 14-day free trial, unlimited agents and seats, 20k credits a month and an 8% orchestration fee; Enterprise is custom. The FAQ says credits are indexed at $0.005 each and do not roll over, that agents stop when the month’s credits run out unless pay as you go is on, and that bringing your own model API keys raises the fee to 16%.
Cross-tool job: you build the agent for the refund flow, connect Shopify, Gmail and HubSpot, set a trigger and, on Enterprise, a spend cap, and it runs.
Pros: unlimited seats on Pro; model choice; triggers, skills and a company brain. Cons, as stated: credits metered at model, compute and tool-call list prices plus an 8% or 16% fee; RBAC, org-wide policies, spend caps, audit logs and VPC are Enterprise features.
6. Relevance AI
Relevance AI sells an AI workforce to enterprises. relevanceai.com leads with Invent 2.0, “Your 24/7 AI solutions engineer”, and an embedded deployment team: weeks 1 to 2 to map use cases, week 3 onward to deploy a first team of agents. The page lists human-in-the-loop approvals, audit logs, data residency, SOC 2 Type II, GDPR and 1,000+ apps.
Per the Relevance AI pricing page: a single Enterprise plan with no published price and a “Talk to sales” button, listing unlimited agents, tools, users and workforces, 2,000+ integrations, calling and meeting agents, agent evaluations, A/B testing, SSO, RBAC and audit logs.
Cross-tool job: a team of specialist agents run as a workforce with approvals in the loop, built with you by a deployment programme.
Pros: approvals, audit logs and residency stated up front. Cons, as stated: no self-serve plan or public price.
7. ChatGPT
ChatGPT’s pricing page lists Free, Go, Plus, Pro, Business and Enterprise, prices Go, Plus, Business and Enterprise per user per month, and says Business starts at 2 users. Free has limited memory and context; Plus adds “Projects, scheduled tasks, and custom GPTs” and expanded memory; Pro adds “Dot, your always-on agent”. OpenAI’s help center prices Plus at $20 a month and names Pro tiers at $100 and $200, with new sign-ups and upgrades to the $200 tier paused as of 10 September 2026, per the help article captured 25 September 2026.
Cross-tool job: ChatGPT gives you the plan and the drafts in one chat. Carrying them into Shopify, Gmail and HubSpot depends on the connectors, plugins or agent features your plan includes; the pricing page marks “Workspace agents” as unavailable on the four individual plans.
Pros: a Free plan; projects, memory and scheduled tasks on paid plans. Cons, as stated: per-user pricing; agent and workspace features sit on higher or business tiers.
Is Sintra AI better than ChatGPT?
Sintra’s pitch is role-based: 12 helpers, each a chatbot for one function, with integrations assigned per specialist and Brain AI as shared memory. ChatGPT’s pitch is model access and features per plan: projects, scheduled tasks and custom GPTs on Plus, an always-on agent on Pro, per-user Business plans. With Sintra you pick the helper and move work between helpers when a job spans roles; with ChatGPT you bring the context and take the output into your tools yourself.
Trustpilot reviewers land on both sides: a five-star review from 15 January 2026 called Sintra “far more useful than ChatGPT”, and the two-star review above ended with “Free Chatgpt seems to be doing the job.”
How to choose a Sintra AI alternative
Three decision rules:
- One-off content tasks, a post, an email, a brief: ChatGPT does them in one chat; Sintra and Marblism do them with the task pre-framed by a role.
- Single-channel work, one inbox, one social account, one phone line, one task list: Marblism assigns one AI employee per channel, and Motion covers the task list and calendar.
- Multi-step work across tools: ask where the job starts, who finishes it and where it stops for approval. Viktor and Lindy start in Slack and finish the job themselves. Gumloop finishes it with an agent you build, Relevance AI with an agent team a deployment programme builds. What is an AI employee covers the helper-versus-employee difference.
See the tools Viktor connects to →
Trust checks before connecting an account. Ask which actions wait for a person: Viktor gates money moves, code pushes and customer emails plus any tool an admin chooses; Lindy gates outside-impact actions; Gumloop stops agents when Pro credits run out and caps spend on Enterprise; Relevance AI lists human-in-the-loop approvals; Marblism checks in for approval; Sintra has you set approval levels. The case for that gate is in why an AI agent should ask before acting. And grant the minimum: OWASP’s guidance on excessive agency says to give LLM extensions the minimum permissions necessary and to require a human to approve high-impact actions before they are taken.
Book a demo and bring the job Sintra could not finish →
Start with up to $100 in free credits. No card required.
FAQ
Is Sintra AI worth it?
Trustpilot reviewers from January 2026 praised Sintra for email drafts and analysis and complained about handoffs between helpers, memory entered again and credits. The page carried a TrustScore of 4.5 from 7,544 reviews when captured on 15 January 2026; the complaints quoted above describe what happens when a task crosses helpers and tools.
What are the best Sintra AI alternatives?
The seven on this page: Viktor, Lindy, Marblism, Motion, Gumloop, Relevance AI and ChatGPT. Viktor and Lindy run a whole job from Slack with approvals before outbound actions.
Is there a free Sintra AI alternative?
Viktor starts with up to $100 in free credits and no credit card. Among the others, ChatGPT has a Free plan, Lindy gives free credits for 7 days without a card, Gumloop has a 14-day free trial and Motion a free trial; Sintra and Marblism sell paid plans with 14-day and 7-day money-back guarantees.
Is Sintra AI better than ChatGPT?
Sintra packages 12 role-based helpers with one-click integrations and shared memory; ChatGPT sells model access and features per plan. Sintra fits pre-framed marketing and support tasks in one platform, ChatGPT a general tool you direct yourself.
Can one AI employee replace several helpers?
Yes, when the unit of work is the job rather than the role. Viktor takes a request in Slack or Teams and works across 9,800+ tools with approval before sensitive actions, and Lindy works across its integrations with approval before outside-impact actions.
Ask ChatGPT
Ask Claude