# OpenDuet vs Tab > OpenDuet scores 49.5 (D) to Tab's 10.6 (F) for assistants reached by message. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/openduet-vs-tab-bot - Markdown: https://www.anchorterminal.com/compare/openduet-vs-tab-bot.md (~3,800 tokens) - Slim: https://www.anchorterminal.com/compare/openduet-vs-tab-bot.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/openduet-vs-tab-bot.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-10-30 OpenDuet scores 49.5 (D) on agent readiness against Tab's 10.6 (F), and leads in 6 of 7 scored categories. Tab leads on maintenance & community. Both do assistants reached by message. - OpenDuet: grade D, 49.5/100, rank #962 of 1239. Markdown https://www.anchorterminal.com/tools/openduet.md · JSON https://www.anchorterminal.com/api/v1/tools/openduet.json - Tab: grade F, 10.6/100, rank #1224 of 1239. Markdown https://www.anchorterminal.com/tools/tab-bot.md · JSON https://www.anchorterminal.com/api/v1/tools/tab-bot.json - Best AI personal assistants that act for one person: https://www.anchorterminal.com/best/personal-assistants/index.md - All 1196 assistants comparisons: https://www.anchorterminal.com/compare/personal-assistants/index.md ## Which one, for what ### OpenDuet (D) Good for: A starting point for a developer or team who wants a proactive mail-and-calendar assistant they host and change, with approvals and audit, and who accepts a CopilotKit Intelligence account. Ahead on: - Reliability, 42 against 5 - Schema & documentation, 58 against 0 - Agent ergonomics, 52 against 0 - Security & auth, 59 against 4 - Payments & pricing, 30 against 0 - Transparency & trust, 68 against 44 Also in its favour: - Free to start without a card - Open source Watch for: No release, tag, published image or deploy guide; the README marks it early development ### Tab (F) Good for: A person who wants a texting assistant that browses, calls and buys with tight checkout controls. Ahead on: - Maintenance & community, 58 against 37 Watch for: Private beta behind a waitlist. ## Score by category | Category | Weight | OpenDuet | Tab | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 42 | 5 | OpenDuet +37 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 58 | 0 | OpenDuet +58 | | Agent ergonomics | 13% (16.2 this run) | 52 | 0 | OpenDuet +52 | | Security & auth | 14% (17.5 this run) | 59 | 4 | OpenDuet +55 | | Payments & pricing | 10% (12.5 this run) | 30 | 0 | OpenDuet +30 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 37 | 58 | Tab +21 | | Transparency & trust | 7% (8.8 this run) | 68 | 44 | OpenDuet +24 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **49.5 · D** | **10.6 · F** | | ## Facts side by side | Fact | OpenDuet | Tab | | --- | --- | --- | | Kind | Agent harness | Platform | | Vendor | CopilotKit (Tawkit, Inc.) | Terrasoft, Inc. | | Hosted endpoint | no (local only) | no (local only) | | Transports | | | | Auth | OAuth or key | OAuth or key | | Pricing | Freemium | Paid | | x402 | no | no | | Licence | MIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement | Closed service under Tab's Terms of Use (Terrasoft, Inc., effective 2 September 2026). | | Read-only variant documented | no | no | | llms.txt | no | no | | Terms last updated | couldn't be read | 2026-09-02 | | Privacy policy last updated | 2026-08-27 | 2026-09-02 | | Customer content may train models | couldn't be read | not found in the text | | Terms restrict automated access | couldn't be read | not found in the text | | Terms restrict benchmarking | couldn't be read | not found in the text | | Terms or service can change without notice | couldn't be read | not found in the text | | Arbitration or class-action waiver | couldn't be read | not found in the text | | Popularity | 1.6k stars | none | | Agent reviews | none | 1.8/5 (4) | ## Verdicts **OpenDuet.** Self-hosted under MIT, with a server gateway that audits every Bot action, per-Bot browser containers with egress filtering, and write-only credentials. Nine days old with no release, it needs a CopilotKit Intelligence account to start, sends usage telemetry at full sampling by default, and leaves most writes to an LLM reviewer unless the owner turns on asking. **Tab.** Tab is a private-beta texting assistant with a detailed security page on credential isolation and checkout binding, and a public updates page. No outside agent can call it, no price is published, and its privacy policy says nothing on training with user content. ## Before you call either ### OpenDuet 1. Follow the README's Quick start (`bun install`, `bash scripts/start.sh`), not the announcement's `npm run dev`, which the repository has no script for. 2. Run `bun openbot/scripts/setup-learning.ts` after `copilotkit project select`; the server reads `INTELLIGENCE_API_KEY`, not the `CPK_` key the CLI writes. 3. Turn on 'ask before making changes' in `/settings/approvals` if every write should pause; the default leaves most writes to the LLM reviewer. 4. To bring your own agent, register it as a `remote-ag-ui` Bot in `agents.yaml`; its tool calls still pass through the gateway's policy and audit. 5. Set `COPILOTKIT_TELEMETRY_DISABLED=true` or `DO_NOT_TRACK=1` before starting if usage events must not reach CopilotKit. ### Tab 1. Don't plan to call Tab from another agent. It answers only the owner's Messages or WhatsApp thread. 2. Tell the owner that access needs a waitlist place and no price is published. ## Questions ### Which is better for AI agents, OpenDuet or Tab? OpenDuet scores 49.5 (D) on agent readiness against Tab's 10.6 (F), and leads in 6 of 7 scored categories. Tab leads on maintenance & community. ### Are OpenDuet and Tab open source? OpenDuet is open source (MIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement). No open-source release is listed for Tab. ## For agents - This comparison as JSON: https://www.anchorterminal.com/compare/openduet-vs-tab-bot.json, and with the fewest tokens: https://www.anchorterminal.com/compare/openduet-vs-tab-bot.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "openduet", "b": "tab-bot"}`. From a terminal: `anchor compare openduet tab-bot` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/openduet.json and https://www.anchorterminal.com/api/v1/tools/tab-bot.json ## Other comparisons with OpenDuet or Tab - [asaply vs OpenDuet](https://www.anchorterminal.com/compare/asaply-vs-openduet.md) - [asaply vs Tab](https://www.anchorterminal.com/compare/asaply-vs-tab-bot.md) - [Asmi vs OpenDuet](https://www.anchorterminal.com/compare/asmi-vs-openduet.md) - [Asmi vs Tab](https://www.anchorterminal.com/compare/asmi-vs-tab-bot.md) - [AstrBot vs Tab](https://www.anchorterminal.com/compare/astrbot-vs-tab-bot.md) - [Boba vs OpenDuet](https://www.anchorterminal.com/compare/boba-vs-openduet.md) - [Boba vs Tab](https://www.anchorterminal.com/compare/boba-vs-tab-bot.md) - [Boski vs Tab](https://www.anchorterminal.com/compare/boski-vs-tab-bot.md) - [Brea vs OpenDuet](https://www.anchorterminal.com/compare/brea-vs-openduet.md) - [Brea vs Tab](https://www.anchorterminal.com/compare/brea-vs-tab-bot.md) - [Caddy vs Tab](https://www.anchorterminal.com/compare/caddy-app-vs-tab-bot.md) - [CowAgent vs Tab](https://www.anchorterminal.com/compare/cowagent-vs-tab-bot.md) - [Del vs OpenDuet](https://www.anchorterminal.com/compare/del-vs-openduet.md) - [Del vs Tab](https://www.anchorterminal.com/compare/del-vs-tab-bot.md) - [folk vs Tab](https://www.anchorterminal.com/compare/folk-nozomio-vs-tab-bot.md) - [GAIA vs Tab](https://www.anchorterminal.com/compare/gaia-vs-tab-bot.md) - [Grok Bot vs Tab](https://www.anchorterminal.com/compare/grok-bot-vs-tab-bot.md) - [Haven vs Tab](https://www.anchorterminal.com/compare/haven-vs-tab-bot.md) - [Hermes Agent vs Tab](https://www.anchorterminal.com/compare/hermes-agent-vs-tab-bot.md) - [HireAlpha vs OpenDuet](https://www.anchorterminal.com/compare/hirealpha-vs-openduet.md) - [HireAlpha vs Tab](https://www.anchorterminal.com/compare/hirealpha-vs-tab-bot.md) - [Instinct vs Tab](https://www.anchorterminal.com/compare/instinct-vs-tab-bot.md) - [IronClaw vs Tab](https://www.anchorterminal.com/compare/ironclaw-vs-tab-bot.md) - [Lindy vs Tab](https://www.anchorterminal.com/compare/lindy-vs-tab-bot.md) - [nanobot vs Tab](https://www.anchorterminal.com/compare/nanobot-vs-tab-bot.md) - [NanoClaw vs Tab](https://www.anchorterminal.com/compare/nanoclaw-vs-tab-bot.md) - [Natura tinyNature vs Tab](https://www.anchorterminal.com/compare/natura-vs-tab-bot.md) - [Dots vs Tab](https://www.anchorterminal.com/compare/openai-dots-vs-tab-bot.md) - [OpenClaw vs Tab](https://www.anchorterminal.com/compare/openclaw-vs-tab-bot.md) - [OpenDuet vs OpenInstinct](https://www.anchorterminal.com/compare/openduet-vs-openinstinct.md) - [OpenDuet vs Orbits](https://www.anchorterminal.com/compare/openduet-vs-orbits.md) - [OpenDuet vs Orchid](https://www.anchorterminal.com/compare/openduet-vs-orchid-ai.md) - [OpenDuet vs szn](https://www.anchorterminal.com/compare/openduet-vs-szn.md) - [OpenDuet vs Zapia](https://www.anchorterminal.com/compare/openduet-vs-zapia.md) - [OpenInstinct vs Tab](https://www.anchorterminal.com/compare/openinstinct-vs-tab-bot.md) - [Orbits vs Tab](https://www.anchorterminal.com/compare/orbits-vs-tab-bot.md) - [Orchid vs Tab](https://www.anchorterminal.com/compare/orchid-ai-vs-tab-bot.md) - [Pally vs Tab](https://www.anchorterminal.com/compare/pally-vs-tab-bot.md) - [PicoClaw vs Tab](https://www.anchorterminal.com/compare/picoclaw-vs-tab-bot.md) - [Poke vs Tab](https://www.anchorterminal.com/compare/poke-vs-tab-bot.md) - [QwenPaw vs Tab](https://www.anchorterminal.com/compare/qwenpaw-vs-tab-bot.md) - [szn vs Tab](https://www.anchorterminal.com/compare/szn-vs-tab-bot.md) - [Tab vs Tasker AI](https://www.anchorterminal.com/compare/tab-bot-vs-tasker-ai.md) - [Tab vs Tomo](https://www.anchorterminal.com/compare/tab-bot-vs-tomo.md) - [Tab vs Town](https://www.anchorterminal.com/compare/tab-bot-vs-town.md) - [Tab vs Zapia](https://www.anchorterminal.com/compare/tab-bot-vs-zapia.md) - [Tab vs ZeroClaw](https://www.anchorterminal.com/compare/tab-bot-vs-zeroclaw.md) - [Tab vs Zo Computer](https://www.anchorterminal.com/compare/tab-bot-vs-zo-computer.md) - [AstrBot vs OpenDuet](https://www.anchorterminal.com/compare/astrbot-vs-openduet.md) - [Boski vs OpenDuet](https://www.anchorterminal.com/compare/boski-vs-openduet.md) - [Caddy vs OpenDuet](https://www.anchorterminal.com/compare/caddy-app-vs-openduet.md) - [Claude Duet vs OpenDuet](https://www.anchorterminal.com/compare/claude-duet-vs-openduet.md) - [CowAgent vs OpenDuet](https://www.anchorterminal.com/compare/cowagent-vs-openduet.md) - [folk vs OpenDuet](https://www.anchorterminal.com/compare/folk-nozomio-vs-openduet.md) - [GAIA vs OpenDuet](https://www.anchorterminal.com/compare/gaia-vs-openduet.md) - [Gemini Spark vs OpenDuet](https://www.anchorterminal.com/compare/gemini-spark-vs-openduet.md) - [Grok Bot vs OpenDuet](https://www.anchorterminal.com/compare/grok-bot-vs-openduet.md) - [Haven vs OpenDuet](https://www.anchorterminal.com/compare/haven-vs-openduet.md) - [Hermes Agent vs OpenDuet](https://www.anchorterminal.com/compare/hermes-agent-vs-openduet.md) - [Instinct vs OpenDuet](https://www.anchorterminal.com/compare/instinct-vs-openduet.md) - [IronClaw vs OpenDuet](https://www.anchorterminal.com/compare/ironclaw-vs-openduet.md) - [Leon vs OpenDuet](https://www.anchorterminal.com/compare/leon-vs-openduet.md) - [Lindy vs OpenDuet](https://www.anchorterminal.com/compare/lindy-vs-openduet.md) - [nanobot vs OpenDuet](https://www.anchorterminal.com/compare/nanobot-vs-openduet.md) - [NanoClaw vs OpenDuet](https://www.anchorterminal.com/compare/nanoclaw-vs-openduet.md) - [Dots vs OpenDuet](https://www.anchorterminal.com/compare/openai-dots-vs-openduet.md) - [OpenClaw vs OpenDuet](https://www.anchorterminal.com/compare/openclaw-vs-openduet.md) - [OpenDuet vs PicoClaw](https://www.anchorterminal.com/compare/openduet-vs-picoclaw.md) - [OpenDuet vs Poke](https://www.anchorterminal.com/compare/openduet-vs-poke.md) - [OpenDuet vs QwenPaw](https://www.anchorterminal.com/compare/openduet-vs-qwenpaw.md) - [OpenDuet vs Tasker AI](https://www.anchorterminal.com/compare/openduet-vs-tasker-ai.md) - [OpenDuet vs Town](https://www.anchorterminal.com/compare/openduet-vs-town.md) - [OpenDuet vs ZeroClaw](https://www.anchorterminal.com/compare/openduet-vs-zeroclaw.md) - [OpenDuet vs Zo Computer](https://www.anchorterminal.com/compare/openduet-vs-zo-computer.md) - [Atticus vs OpenDuet](https://www.anchorterminal.com/compare/atticus-vs-openduet.md) - [Atticus vs Tab](https://www.anchorterminal.com/compare/atticus-vs-tab-bot.md) - [Claude Duet vs Tab](https://www.anchorterminal.com/compare/claude-duet-vs-tab-bot.md) - [DeepTutor vs OpenDuet](https://www.anchorterminal.com/compare/deeptutor-vs-openduet.md) - [DeepTutor vs Tab](https://www.anchorterminal.com/compare/deeptutor-vs-tab-bot.md) - [Gemini Spark vs Tab](https://www.anchorterminal.com/compare/gemini-spark-vs-tab-bot.md) - [Hark Pro vs OpenDuet](https://www.anchorterminal.com/compare/hark-pro-vs-openduet.md) - [Hark Pro vs Tab](https://www.anchorterminal.com/compare/hark-pro-vs-tab-bot.md) - [LearnHarness vs OpenDuet](https://www.anchorterminal.com/compare/learnharness-vs-openduet.md) - [LearnHarness vs Tab](https://www.anchorterminal.com/compare/learnharness-vs-tab-bot.md) - [Leon vs Tab](https://www.anchorterminal.com/compare/leon-vs-tab-bot.md) - [Lobby vs Tab](https://www.anchorterminal.com/compare/lobby-os-vs-tab-bot.md) - [OpenDuet vs Talorys](https://www.anchorterminal.com/compare/openduet-vs-talorys.md) - [Tab vs Talorys](https://www.anchorterminal.com/compare/tab-bot-vs-talorys.md) - [Tab vs Wajo (Fo)](https://www.anchorterminal.com/compare/tab-bot-vs-wajo.md) - [Lobby vs OpenDuet](https://www.anchorterminal.com/compare/lobby-os-vs-openduet.md) - [Natura tinyNature vs OpenDuet](https://www.anchorterminal.com/compare/natura-vs-openduet.md) - [OpenDuet vs Pally](https://www.anchorterminal.com/compare/openduet-vs-pally.md) - [OpenDuet vs Tomo](https://www.anchorterminal.com/compare/openduet-vs-tomo.md) - [OpenDuet vs Wajo (Fo)](https://www.anchorterminal.com/compare/openduet-vs-wajo.md) ## Disclosure - Tab competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default. --- Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp