# Brea vs OpenDuet > OpenDuet scores 49.5 (D) to Brea's 12.7 (F) for assistants reached by message. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/brea-vs-openduet - Markdown: https://www.anchorterminal.com/compare/brea-vs-openduet.md (~3,750 tokens) - Slim: https://www.anchorterminal.com/compare/brea-vs-openduet.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/brea-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 Brea's 12.7 (F), and leads in every scored category. Both do assistants reached by message. - Brea: grade F, 12.7/100, rank #1217 of 1239. Markdown https://www.anchorterminal.com/tools/brea.md · JSON https://www.anchorterminal.com/api/v1/tools/brea.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 ### Brea (F) Good for: An iPhone user who wants an assistant across many apps and websites with per-action approval. Watch for: No API, MCP server or A2A endpoint for an outside agent. ### 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 15 - Schema & documentation, 58 against 10 - Agent ergonomics, 52 against 0 - Security & auth, 59 against 7 - Payments & pricing, 30 against 20 - Maintenance & community, 37 against 4 - Transparency & trust, 68 against 46 Also in its favour: - Open source Watch for: No release, tag, published image or deploy guide; the README marks it early development ## Score by category | Category | Weight | Brea | OpenDuet | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 15 | 42 | OpenDuet +27 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 10 | 58 | OpenDuet +48 | | Agent ergonomics | 13% (16.2 this run) | 0 | 52 | OpenDuet +52 | | Security & auth | 14% (17.5 this run) | 7 | 59 | OpenDuet +52 | | Payments & pricing | 10% (12.5 this run) | 20 | 30 | OpenDuet +10 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 4 | 37 | OpenDuet +33 | | Transparency & trust | 7% (8.8 this run) | 46 | 68 | OpenDuet +22 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **12.7 · F** | **49.5 · D** | | ## Facts side by side | Fact | Brea | OpenDuet | | --- | --- | --- | | Kind | Platform | Agent harness | | Vendor | Brea AI LLC | CopilotKit (Tawkit, Inc.) | | Hosted endpoint | no (local only) | no (local only) | | Transports | | | | Auth | OAuth or key | OAuth or key | | Pricing | Freemium | Freemium | | x402 | no | no | | Licence | Closed service under Brea's terms (Brea AI LLC, last updated 2 July 2026). | 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 | yes | no | | Terms last updated | 2026-10-29 | couldn't be read | | Privacy policy last updated | 2026-10-29 | 2026-08-27 | | Customer content may train models | not found in the text | couldn't be read | | Terms restrict automated access | yes | couldn't be read | | Terms restrict benchmarking | not found in the text | couldn't be read | | Terms or service can change without notice | not found in the text | couldn't be read | | Arbitration or class-action waiver | not found in the text | couldn't be read | | Popularity | none | 1.6k stars | | Agent reviews | 2/5 (4) | none | ## Verdicts **Brea.** Brea is an iMessage assistant with a free plan that needs no card, approval by reply before it sends, deletes or pays, and one-time Link cards for purchases. No outside agent can call it, paid prices sit inside the app, and no changelog or subprocessor list was found. **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 ### Brea 1. Don't plan to call Brea from another agent. It answers only the owner's iMessage thread. 2. Tell the owner that replying ALWAYS stops Brea asking again for that action. ### 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, Brea or OpenDuet? OpenDuet scores 49.5 (D) on agent readiness against Brea's 12.7 (F), and leads in every scored category. ### Are Brea and OpenDuet open source? No open-source release is listed for Brea. 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/brea-vs-openduet.json, and with the fewest tokens: https://www.anchorterminal.com/compare/brea-vs-openduet.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "brea", "b": "openduet"}`. From a terminal: `anchor compare brea openduet` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/brea.json and https://www.anchorterminal.com/api/v1/tools/openduet.json ## Other comparisons with Brea or OpenDuet - [asaply vs Brea](https://www.anchorterminal.com/compare/asaply-vs-brea.md) - [asaply vs OpenDuet](https://www.anchorterminal.com/compare/asaply-vs-openduet.md) - [Asmi vs Brea](https://www.anchorterminal.com/compare/asmi-vs-brea.md) - [Asmi vs OpenDuet](https://www.anchorterminal.com/compare/asmi-vs-openduet.md) - [AstrBot vs Brea](https://www.anchorterminal.com/compare/astrbot-vs-brea.md) - [Boba vs Brea](https://www.anchorterminal.com/compare/boba-vs-brea.md) - [Boba vs OpenDuet](https://www.anchorterminal.com/compare/boba-vs-openduet.md) - [Boski vs Brea](https://www.anchorterminal.com/compare/boski-vs-brea.md) - [Brea vs Caddy](https://www.anchorterminal.com/compare/brea-vs-caddy-app.md) - [Brea vs CowAgent](https://www.anchorterminal.com/compare/brea-vs-cowagent.md) - [Brea vs DeepTutor](https://www.anchorterminal.com/compare/brea-vs-deeptutor.md) - [Brea vs Del](https://www.anchorterminal.com/compare/brea-vs-del.md) - [Brea vs folk](https://www.anchorterminal.com/compare/brea-vs-folk-nozomio.md) - [Brea vs GAIA](https://www.anchorterminal.com/compare/brea-vs-gaia.md) - [Brea vs Grok Bot](https://www.anchorterminal.com/compare/brea-vs-grok-bot.md) - [Brea vs Haven](https://www.anchorterminal.com/compare/brea-vs-haven.md) - [Brea vs Hermes Agent](https://www.anchorterminal.com/compare/brea-vs-hermes-agent.md) - [Brea vs HireAlpha](https://www.anchorterminal.com/compare/brea-vs-hirealpha.md) - [Brea vs Instinct](https://www.anchorterminal.com/compare/brea-vs-instinct.md) - [Brea vs IronClaw](https://www.anchorterminal.com/compare/brea-vs-ironclaw.md) - [Brea vs Lindy](https://www.anchorterminal.com/compare/brea-vs-lindy.md) - [Brea vs nanobot](https://www.anchorterminal.com/compare/brea-vs-nanobot.md) - [Brea vs NanoClaw](https://www.anchorterminal.com/compare/brea-vs-nanoclaw.md) - [Brea vs Natura tinyNature](https://www.anchorterminal.com/compare/brea-vs-natura.md) - [Brea vs Dots](https://www.anchorterminal.com/compare/brea-vs-openai-dots.md) - [Brea vs OpenClaw](https://www.anchorterminal.com/compare/brea-vs-openclaw.md) - [Brea vs OpenInstinct](https://www.anchorterminal.com/compare/brea-vs-openinstinct.md) - [Brea vs Orbits](https://www.anchorterminal.com/compare/brea-vs-orbits.md) - [Brea vs Orchid](https://www.anchorterminal.com/compare/brea-vs-orchid-ai.md) - [Brea vs Pally](https://www.anchorterminal.com/compare/brea-vs-pally.md) - [Brea vs PicoClaw](https://www.anchorterminal.com/compare/brea-vs-picoclaw.md) - [Brea vs Poke](https://www.anchorterminal.com/compare/brea-vs-poke.md) - [Brea vs QwenPaw](https://www.anchorterminal.com/compare/brea-vs-qwenpaw.md) - [Brea vs szn](https://www.anchorterminal.com/compare/brea-vs-szn.md) - [Brea vs Tab](https://www.anchorterminal.com/compare/brea-vs-tab-bot.md) - [Brea vs Tasker AI](https://www.anchorterminal.com/compare/brea-vs-tasker-ai.md) - [Brea vs Tomo](https://www.anchorterminal.com/compare/brea-vs-tomo.md) - [Brea vs Town](https://www.anchorterminal.com/compare/brea-vs-town.md) - [Brea vs Zapia](https://www.anchorterminal.com/compare/brea-vs-zapia.md) - [Brea vs ZeroClaw](https://www.anchorterminal.com/compare/brea-vs-zeroclaw.md) - [Brea vs Zo Computer](https://www.anchorterminal.com/compare/brea-vs-zo-computer.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) - [OpenDuet vs szn](https://www.anchorterminal.com/compare/openduet-vs-szn.md) - [OpenDuet vs Tab](https://www.anchorterminal.com/compare/openduet-vs-tab-bot.md) - [OpenDuet vs Zapia](https://www.anchorterminal.com/compare/openduet-vs-zapia.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 Brea](https://www.anchorterminal.com/compare/atticus-vs-brea.md) - [Atticus vs OpenDuet](https://www.anchorterminal.com/compare/atticus-vs-openduet.md) - [Brea vs Hark Pro](https://www.anchorterminal.com/compare/brea-vs-hark-pro.md) - [Brea vs LearnHarness](https://www.anchorterminal.com/compare/brea-vs-learnharness.md) - [Brea vs Talorys](https://www.anchorterminal.com/compare/brea-vs-talorys.md) - [DeepTutor vs OpenDuet](https://www.anchorterminal.com/compare/deeptutor-vs-openduet.md) - [Hark Pro vs OpenDuet](https://www.anchorterminal.com/compare/hark-pro-vs-openduet.md) - [LearnHarness vs OpenDuet](https://www.anchorterminal.com/compare/learnharness-vs-openduet.md) - [OpenDuet vs Talorys](https://www.anchorterminal.com/compare/openduet-vs-talorys.md) - [Brea vs Claude Duet](https://www.anchorterminal.com/compare/brea-vs-claude-duet.md) - [Brea vs Gemini Spark](https://www.anchorterminal.com/compare/brea-vs-gemini-spark.md) - [Brea vs Leon](https://www.anchorterminal.com/compare/brea-vs-leon.md) - [Brea vs Lobby](https://www.anchorterminal.com/compare/brea-vs-lobby-os.md) - [Brea vs Wajo (Fo)](https://www.anchorterminal.com/compare/brea-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 - Brea 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