Sim vs Zapier

Sim

• Teams building internal agents that share knowledge bases, tables and logs
• Developers who want a visual builder plus an API and a CLI
• Organizations that need to self-host an open-source agent platform

Zapier

• Connecting a wide range of cloud apps, including less common ones
• Solo users with light needs who can stay within 100 tasks a month
• Teams that want shared workflows with single sign-on and admin controls

Sim

• The Free plan's 1,000 credits are a one-time grant with no weekly refresh, and it allows 1 workspace and no teammates.
• Every workflow run carries a base charge of 1 credit, even when you bring your own model keys.
• Sim Mailer, KB Live Sync, sandboxes and Slack Connect start at Max; access control and SSO are Enterprise only.
• The desktop app is for macOS only (macOS 12 or later); on other systems Sim is used in a browser.

Zapier

• The Free plan is limited to 100 tasks a month and two-step Zaps, and checks for new data only every 15 minutes.
• Free and Professional include a single user; sharing workflows with colleagues needs the Team plan.
• Cost rises with volume: Professional runs from $19.99 a month for 750 tasks to $3,389 a month for 2 million, billed annually.
• Tasks beyond the plan limit are billed per task at a higher rate that depends on plan and billing cycle; the rate is not published, and Zaps pause at 3 times the plan's limit.

Sim

Workflow builder

Agent logic is laid out as connected blocks: agents, API calls, functions, conditions, routers, loops, parallel branches and human-in-the-loop steps.

Building in Chat

Describe a system in plain language and Chat scaffolds the workflows, tables and knowledge bases, which you then open, run and refine in the builder.

Knowledge bases, tables and files

Knowledge bases draw on uploaded documents and on connectors to sources such as Notion, Google Drive, Confluence and SharePoint. Tables hold structured rows, and files store agent inputs and outputs.

Triggers and deployment

Workflows start from a schedule, a webhook, an RSS feed or a table event, and are deployed as an API endpoint, a chat interface or an MCP server.

Logs and cost tracking

Each run is traced block by block, with token counts and cost per model, and alerts can be set on the logs.

Enterprise governance

The Enterprise plan adds SSO and SCIM provisioning, permission groups that decide which models and integrations a group may use, audit logs and data retention settings.

Zapier

Zaps

Workflows that start from a trigger and run one or more actions. Free accounts are limited to two-step Zaps; Professional adds multi-step Zaps, filters, paths and webhooks.

App directory

Zapier connects more than 9,000 apps, including Google Sheets, Gmail, Slack and HubSpot. Premium apps are unlimited from the Professional plan.

Task-based billing

A standard step uses 1 task when it completes; triggers, polling and built-in tools such as Filters and Paths use none. Some steps use more: an MCP tool call 2, a Lead Router step 5, and AI steps 1 to 5 by model tier.

Tables, Forms and Canvas

Tables store the data that workflows read and write, Forms collect it, and Canvas maps out a process. Tables and Forms are unlimited on every plan, including Free.

Agents, Chatbots and MCP

AI agents take actions across connected apps, and Zapier MCP gives assistants such as Claude and ChatGPT access to them. Agents and Chatbots are optional add-ons with free tiers.

Team and admin controls

Team covers 25 users with shared Zaps, folders and app connections plus SAML SSO. Enterprise adds SCIM provisioning, app controls and custom data retention.

Sim

• Free$0

  1,000 one-time credits, 1 workspace, 10 concurrent executions, 5 GB of file storage, 5 tables and 30-day log retention.

• Pro$21.25

  per user / month, billed annually ($255); $25 billed monthly

  6,000 credits a month plus 2,000 a week, 3 workspaces, teammates, 50 concurrent executions, 50 GB of storage and unlimited log retention.

• Max$85

  per user / month, billed annually ($1,020); $100 billed monthly

  25,000 credits a month plus 4,000 a week, 200 concurrent executions, 500 GB of storage, Sim Mailer, KB Live Sync, sandboxes and Slack Connect.

• EnterpriseCustom

  Custom credits and limits, with access control, SSO, SOC 2 compliance, self-hosting and dedicated support.

Zapier

• Free$0

  100 tasks a month for 1 user, limited to two-step Zaps, with unlimited Zaps, Tables and Forms and 15-minute polling.

• Professional$19.99

  per month, billed annually, for 750 tasks ($29.99 monthly)

  1 user. Multi-step Zaps, unlimited premium apps, webhooks, filters and paths, AI by Zapier and 2-minute polling. Task tiers run up to 2 million a month.

• Team$69

  per month, billed annually, for 2,000 tasks ($103.50 monthly)

  25 users, shared Zaps, folders and app connections, SAML single sign-on, priority support and 1-minute polling.

• EnterpriseCustom

  Unlimited users, advanced admin and app controls, SCIM provisioning, custom data retention and annual task limits.

Sim

• Annual discount

  15% off with annual billing

  Sim's docs list annual billing at a 15% discount on all paid plans: Pro is $255 a year instead of $25 a month, and Max is $1,020 a year instead of $100 a month.

Zapier

• Annual discount

  33% off with annual billing

  Zapier's pricing page says annual subscriptions are billed yearly at 33% off the monthly rate: Professional is $19.99 a month instead of $29.99, and Team $69 instead of $103.50.

• Nonprofit

  Extra 15% off for nonprofits

  The pricing page lists an additional 15% discount for non-profit organizations. It does not apply to pay-per-task charges.