LoopX vs WebBrain: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of LoopX and WebBrain — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
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LoopX
huangruiteng
Provider-neutral state kernel and local-first control plane for governing long-running AI agent loops across Codex, Claude Code, Cursor, and peer teams.
Key features
- Loop-Engineering State Kernel: A compact durable-state layer that keeps objectives, gates, todos, evidence, quotas, and handoffs consistent across many bounded turns.
- Runtime-Agnostic: Governs work executed by any coding-agent runtime — Codex, Claude Code, Cursor, or your own — without replacing them.
- Peer-Agent Model: Registered agents are peers; claims, leases, capabilities, and typed continuation decide who acts next, with no durable leader identity.
- Kanban-Style Control Plane: Cards carry identity, authority, evidence, and continuation; moves are validated operators (claim, gate, monitor, writeback).
- Local-First: The control plane runs locally by default — the public/private boundary is explicit, so private data and code stay on your machine.
- Auto-Wake and Quotas: Quota-aware auto-wake keeps agents progressing on long-running goals without a runaway scheduler.
- Evidence & Continuation: 200+ hour example loops preserve decision lineage, evidence branches, and invalid experiments across turns.
- Human-In-Command: Dangerous permissions, publishing, and production writes remain gated to the human owner — not autonomous.
Best for
- Multi-Day SWE Loops: Drive week-long engineering objectives across many bounded agent turns while keeping scope and review state intact.
- PR/Issue Automation: Preserve review state, evidence, and reviewer preferences across a PR that touches multiple turns and agents.
- Auto-ML Experiments: Keep hypotheses, matched evidence, invalid lineages, and promote/stop gates visible in a single graph over hundreds of hours.
- Multi-Agent Coordination: Coordinate a peer team of Codex + Claude Code + Cursor agents on the same objective with typed handoffs.
- Recurring Monitors: Run heartbeat or monitoring loops with owner-visible gates and evidence trails.
- Creator/Research Workflows: Give non-engineering owners a legible board of long-running work with human sign-off at each gate.
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WebBrain
Emre Sokullu
Free, open-source browser AI agent for Chrome, Firefox, and Edge that reads pages, extracts data, and automates tasks with any LLM.
Key features
- 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.
Best for
- 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.