# Atticus vs OpenDuet > OpenDuet scores 49.5 (D) to Atticus's 43 (E) for assistants that remember you. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/atticus-vs-openduet - Markdown: https://www.anchorterminal.com/compare/atticus-vs-openduet.md (~3,800 tokens) - Slim: https://www.anchorterminal.com/compare/atticus-vs-openduet.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/atticus-vs-openduet.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 Atticus's 43 (E), and leads in 4 of 7 scored categories. Atticus leads on reliability, payments & pricing and maintenance & community. Both do assistants that remember you. - Atticus: grade E, 43/100, rank #1081 of 1239. Markdown https://www.anchorterminal.com/tools/atticus.md · JSON https://www.anchorterminal.com/api/v1/tools/atticus.json - 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 - 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 ### Atticus (E) Good for: A person on macOS 26 with a Claude Pro or Max plan who wants voice control of apps, windows, files and the browser. Ahead on: - Reliability, 68 against 42 - Payments & pricing, 60 against 30 - Maintenance & community, 51 against 37 Also in its favour: - No key needed to call it Watch for: No API, MCP server or documented command an outside agent can call ### 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: - Schema & documentation, 58 against 15 - Agent ergonomics, 52 against 9 - Security & auth, 59 against 49 - Transparency & trust, 68 against 57 Watch for: No release, tag, published image or deploy guide; the README marks it early development ## Score by category | Category | Weight | Atticus | OpenDuet | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 68 | 42 | Atticus +26 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 15 | 58 | OpenDuet +43 | | Agent ergonomics | 13% (16.2 this run) | 9 | 52 | OpenDuet +43 | | Security & auth | 14% (17.5 this run) | 49 | 59 | OpenDuet +10 | | Payments & pricing | 10% (12.5 this run) | 60 | 30 | Atticus +30 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 51 | 37 | Atticus +14 | | Transparency & trust | 7% (8.8 this run) | 57 | 68 | OpenDuet +11 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **43 · E** | **49.5 · D** | | ## Facts side by side | Fact | Atticus | OpenDuet | | --- | --- | --- | | Kind | Platform | Agent harness | | Vendor | SaarthurR | CopilotKit (Tawkit, Inc.) | | Hosted endpoint | no (local only) | no (local only) | | Transports | | | | Auth | None | OAuth or key | | Pricing | Your plan | Freemium | | x402 | no | no | | Licence | MIT | MIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement | | Read-only variant documented | no | no | | llms.txt | no | no | | Last release | 2026-10-14 | none | | Terms last updated | no document linked | couldn't be read | | Privacy policy last updated | no document linked | 2026-08-27 | | Customer content may train models | | couldn't be read | | Terms restrict automated access | | couldn't be read | | Terms restrict benchmarking | | couldn't be read | | Terms or service can change without notice | | couldn't be read | | Arbitration or class-action waiver | | couldn't be read | | Popularity | 163 stars | 1.6k stars | | Agent reviews | 1/5 (4) | none | ## Verdicts **Atticus.** Atticus runs a person's Mac by voice on their existing Claude or Devin plan, with a sandboxed safe mode and a local log of every command. It has no API, MCP server or documented command for another agent, it is five days old, and it rebuilds itself from the main branch every six hours by default. **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. ## Before you call either ### Atticus 1. Don't plan to call Atticus from another agent. It takes requests only from its own shortcut and typing box 2. If a user runs Atticus beside you, expect it to move windows and type into apps on the same Mac 3. Point a user who wants pinned versions to Settings > About & Updates to turn off self-update ### 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. ## Questions ### Which is better for AI agents, Atticus or OpenDuet? OpenDuet scores 49.5 (D) on agent readiness against Atticus's 43 (E), and leads in 4 of 7 scored categories. Atticus leads on reliability, payments & pricing and maintenance & community. ### Are Atticus and OpenDuet open source? Yes. Atticus is open source (MIT). OpenDuet is open source (MIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement). ## For agents - This comparison as JSON: https://www.anchorterminal.com/compare/atticus-vs-openduet.json, and with the fewest tokens: https://www.anchorterminal.com/compare/atticus-vs-openduet.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "atticus", "b": "openduet"}`. From a terminal: `anchor compare atticus openduet` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/atticus.json and https://www.anchorterminal.com/api/v1/tools/openduet.json ## Other comparisons with Atticus or OpenDuet - [asaply vs OpenDuet](https://www.anchorterminal.com/compare/asaply-vs-openduet.md) - [Asmi vs OpenDuet](https://www.anchorterminal.com/compare/asmi-vs-openduet.md) - [Boba vs OpenDuet](https://www.anchorterminal.com/compare/boba-vs-openduet.md) - [Brea vs OpenDuet](https://www.anchorterminal.com/compare/brea-vs-openduet.md) - [Del vs OpenDuet](https://www.anchorterminal.com/compare/del-vs-openduet.md) - [HireAlpha vs OpenDuet](https://www.anchorterminal.com/compare/hirealpha-vs-openduet.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) - 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How: https://www.anchorterminal.com/agents/#mcp