Sim vs WebBrain: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of Sim and WebBrain — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

Sim

Freemium

Open-source AI workspace to build, deploy and manage AI agents across 1,000+ integrations from one platform.

Visual Agent Builder: Drag-and-drop canvas for wiring prompts, tools, memory and LLM calls into deployable agents.
1,000+ Integrations: Ready-made connectors to CRM, sales, support, dev and productivity tools so agents can act across a company's stack.
Multi-model Support: Route each step to the best model from every major LLM provider (OpenAI, Anthropic, Google, open-weights).
Runtime & Scheduling: Deploy agents as scheduled jobs, webhooks or API endpoints with retries and error handling.
Team Workspace: Shared library of prompts, tools and agents with role-based access so teams reuse rather than rebuild.
Open Source & Self-Hostable: Full source available so security-sensitive teams can run Sim in their own cloud.
Observability: Traces every agent run with inputs, tool calls and outputs so builders can debug and improve prompts.

Sales operations: Build agents that enrich inbound leads, sync them into the CRM and hand them to reps.
Customer support: Deploy triage agents that read tickets, pull knowledge-base answers, and draft or send replies.
Internal automations: Wire agents into Slack, Google Workspace or Notion to automate reports, briefs and reminders.
Data workflows: Chain LLM steps with API tools to summarize dashboards, clean CSVs or extract structured data.
Compliance-sensitive teams: Self-host Sim to keep prompts, tool credentials and traces inside the company's own cloud.

Emre Sokullu

Free

Free, open-source browser AI agent for Chrome, Firefox, and Edge that reads pages, extracts data, and automates tasks with any LLM.

Page Understanding: Reads and comprehends any web page, PDF, article, doc, or dashboard and answers questions from the current page content on the spot.
Full Browser Agent: Clicks, types, scrolls, navigates, and interacts with pages on your behalf to automate repetitive tasks from natural-language instructions.
Read-Only Ask Mode by Default: Starts safe — asks before any consequential action, with stricter rules for sensitive fields, to defend against hijacked pages.
Multi-Provider LLM: Works with local llama.cpp, OpenAI, Anthropic Claude, and OpenRouter so you can pick the model or run fully offline.
Dedicated Vision Model: Pairs a fast text-only planning model with a separate vision-capable model for screenshots — cheaper and faster than a single multimodal model.
Data Extraction: Pulls structured data (tables, lists, links, form contents) out of any page and can export product catalogs, search results, or PDF content.
Smart Context Management: Automatically trims conversation history and limits tool output to prevent token overflow during long sessions.
Optional Profile Auto-fill: Local plaintext bio (name, work email, company, throwaway password) lets the agent breeze through low-stakes signup forms; off by default, stored locally.

Research Summaries: Open a long article, doc, or PDF and ask WebBrain to summarize or answer specific questions grounded in that page.
Form Auto-fill: Have the agent complete government, tax, or signup forms by recalling saved profile fields — then review before submit.
Web Scraping Without Code: Extract product catalogs, price lists, or search results from any page into a clean structured list.
Offline / Private Browsing AI: Run entirely on-device with llama.cpp to keep sensitive pages, credentials, or client data off the cloud.
Dev Workflow Assist: Inspect a localhost preview, propose CSS or code changes, and iterate on your own site from the sidebar.
Video / File Downloads: Locate and save streaming media or attachments from a page you're viewing.
Self-Hosted Corporate AI Browser: IT teams deploy WebBrain to give employees a browser agent that never sends data to a third-party vendor.