Cofounder vs Marblism

Cofounder

• Solo founders and small teams launching an early-stage software company
• Founders who build the product themselves and want help with go-to-market
• Handing outreach, content and recurring operations to agents with approvals

Marblism

• Solo founders and small businesses without admin or marketing staff
• Owners who run several businesses from one account
• Teams that want one flat price instead of per-seat billing

Cofounder

• There is no lasting free plan: after the 7-day trial, Cofounder Pro starts at $120 a month, and the terms bill usage-based charges in arrears.
• The Team Plan, planned at $100 per seat, is not yet available; the pricing page offers only a waitlist.
• The documentation says Cofounder is not intended to build or rebuild your core product, database, authentication or hosting stack.
• You cannot bring your own API key or a Codex or Claude Code subscription, according to the pricing FAQ.

Marblism

• There is no free plan or free trial; new subscriptions come with a 7-day money-back guarantee instead.
• Each plan includes 50 hours of AI work a month. Advanced actions use them up, and more hours are sold as top-ups.
• Paying month to month costs $44 a month, against $24 a month on the yearly option.
• SAML SSO and SCIM are not available; Marblism says both are on its roadmap.

Cofounder

Departments of agents

Work is split across departments, each with agents that have their own instructions, integrations and skills. Default agents cover engineering, marketing, design, sales, support, operations and finance.

Approvals before risky actions

Agents run several tasks in the background at once, and actions the vendor treats as potentially dangerous, such as incorporating an LLC or opening a bank account, wait for your approval.

Managed GitHub, Vercel and Supabase

Cofounder sets up and manages GitHub, Vercel and Supabase projects for you. Pro and Team users can claim ownership at any point, after which Cofounder no longer manages the configuration.

Sales and marketing work

Agents research customers, find and enrich prospects, send outreach from inboxes provisioned for them, run email campaigns and publish social posts, drawing on shared company context.

Routines

A routine is a repeating job for one agent, such as a daily status update, a weekly metrics review or a monthly cleanup checklist. An agent can have several.

CLI, MCP server and REST API

Besides the web app, your own agent can run a company through Cofounder's hosted MCP server, the cofounder command-line tool or the REST API, with API keys for scripting.

Marblism

Eva, executive assistant

Filters and labels incoming mail, drafts replies in your voice for you to send, manages the calendar, and joins Google Meet, Zoom and Microsoft Teams calls to take notes.

Sonny, social media manager

Writes posts, generates matching photos and short videos, and publishes to Instagram, LinkedIn, X and Facebook from a content calendar you can review first.

Stan, lead generation

Searches a database of more than 700 million leads, sends personalized email from your own inbox and LinkedIn connection requests, follows up, and books meetings.

Penny, SEO writer

Finds keywords, writes articles on a schedule you set and publishes them to WordPress, Webflow, Shopify or Wix, with site audits and rank tracking.

Rachel, phone receptionist

Answers calls around the clock on a dedicated phone number, books appointments, takes messages and can transfer a call to your own line.

Walter and Linda

Walter builds a website from a prompt, edits it by chat and connects a custom domain. Linda drafts contracts, reviews agreements and flags risky clauses.

Cofounder

• Free TrialFree

  for 7 days

  Design system builder, landing page hosting, and strategy and analysis tools.

• Cofounder Pro$120

  per month, listed as a starting price

  For a founder running a company: SEO and ICP analysis, multiple agents, outbound and an email inbox, social post publishing, and an LLC incorporation add-on.

• Team Plan$100

  per seat; coming soon, billing period not shown

  Planned plan adding multiplayer access, SOC 2 and priority support. It is not on sale yet; the pricing page offers a waitlist.

Marblism

• Yearly$24

  per month on the yearly option, billed in advance

  All 7 AI Employees, 50 hours of AI work a month, unlimited team members and unlimited businesses.

• Monthly$44

  per month, billed monthly

  The same plan paid month to month: all 7 AI Employees, 50 hours of AI work a month, unlimited team members and businesses.

Cofounder

No public discounts listed.

Marblism

• Annual discount

  About 45% less on the yearly option

  The pricing page shows $24 a month on the yearly option against $44 a month when paying monthly, which works out to a saving of about 45%.