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Tech riderRev. 30 Sept 2026

Tandem Browser

Ch 117.1of 23 AI Browsers
  1. 1Runs onAPI, Linux, Mac, Windows
  2. 2CostsFree plan
  3. 3Page summariesYes
  4. 4AI research modeYes
  5. 5Browser agentYes
  6. 6Supported platformsmacOS Apple Silicon, Windows 11 x64, Linux (best-effort)
  7. 7Browser enginechromium
  8. 8Privacy modellocal
8 lines stated Written from the maker's own pages: tandembrowser.org
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The Tandem Browser homepage

Overview

Tandem Browser is ranked #11 of 23 in AI browsers on Specifiction. It runs on API, Linux, macOS, Windows. There is a free plan.

Tandem Browser plans and pricing

All plans
Free Free Free and open source · no subscription tandembrowser.org · 30 Sept 2026

Compared on AI browsers

Free plan
Yestandembrowser.org
Page summaries
Yestandembrowser.org
AI research mode
Yestandembrowser.org
Browser agent
Yestandembrowser.org
Supported platforms
macOS Apple Silicon, Windows 11 x64, Linux (best-effort)tandembrowser.org
Browser engine
chromiumtandembrowser.org
Privacy model
localtandembrowser.org

Facts

Product
Tandem Browser is an open-source, local-first browser where AI agents share the user's browser session, tabs, cookies, and DOM.tandembrowser.org · 30 Sept 2026
License and stage
The site identifies Tandem Browser as MIT licensed and in developer preview.tandembrowser.org · 30 Sept 2026
Page access
Agents can work with the accessibility tree, rendered DOM, network requests, console output, and DevTools.tandembrowser.org · 30 Sept 2026
Human handoff
When an agent encounters a CAPTCHA, unclear form, or judgment call, it pauses and asks the user for help.tandembrowser.org · 30 Sept 2026
Model integrations
The maker says agents that speak MCP or HTTP can connect, including Claude, GPT, Gemini, OpenClaw, Ollama, LM Studio, and custom scripts.tandembrowser.org · 30 Sept 2026
Agent connections
Agents can connect on the same machine or remotely over a private Tailscale network; each agent can have its own workspace, with tab locks to prevent conflicts.tandembrowser.org · 30 Sept 2026
API
The API page documents more than 280 HTTP endpoints and 257 MCP tools, with bearer-token authentication.tandembrowser.org · 30 Sept 2026
Security
The maker describes an eight-layer security pipeline with an 811K-plus-entry blocklist, YARA-style rules, AST fingerprinting, entropy detection, and 51 automated tests.tandembrowser.org · 30 Sept 2026
Data handling
The FAQ says there is no Tandem Browser cloud backend, subscription, or telemetry, and that browsing data stays on the user's machine unless they choose to send it elsewhere.tandembrowser.org · 30 Sept 2026
Offline use
The FAQ says Tandem Browser can run fully offline when used with a local model such as Ollama or LM Studio.tandembrowser.org · 30 Sept 2026
Platforms
The FAQ lists macOS Apple Silicon and Windows 11 x64 as supported, with Linux described as best-effort; it says macOS builds are signed and notarized while Windows builds are unsigned.tandembrowser.org · 30 Sept 2026
Browser features
The maker lists workspaces, extensions, bookmarks, history, a local password vault, and sidebar apps among its daily-driver browser features.github.com · 30 Sept 2026
Sidebar integrations
The repository lists Telegram, WhatsApp, Discord, Slack, Gmail, Calendar, Instagram, and X as sidebar apps.github.com · 30 Sept 2026
Support
The maker directs users to GitHub Discussions for questions and troubleshooting, and GitHub issues for bugs and concrete feature requests.github.com · 30 Sept 2026
Audience
The maker describes the product as aimed at AI power users, MCP builders, privacy-minded operators, and teams exploring browser agents.tandembrowser.org · 30 Sept 2026

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Where it ranks on Specifiction

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