# nanobot vs OpenDuet

> nanobot scores 63 (B) to OpenDuet's 49.5 (D) for proactive personal assistants. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/nanobot-vs-openduet
- Markdown: https://www.anchorterminal.com/compare/nanobot-vs-openduet.md (~3,900 tokens)
- Slim: https://www.anchorterminal.com/compare/nanobot-vs-openduet.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/nanobot-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

nanobot scores 63 (B) on agent readiness against OpenDuet's 49.5 (D), and leads in 6 of 7 scored categories. OpenDuet leads on transparency & trust. Both do proactive personal assistants.

- nanobot: grade B, 63/100, rank #483 of 1239. Markdown https://www.anchorterminal.com/tools/nanobot.md · JSON https://www.anchorterminal.com/api/v1/tools/nanobot.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

### nanobot (B)

Good for: A technical owner who wants an assistant on their own machine across many chat apps, with file-based memory and a free choice of model.

Ahead on:
- Reliability, 70 against 42
- Schema & documentation, 77 against 58
- Agent ergonomics, 74 against 52
- Payments & pricing, 60 against 30
- Maintenance & community, 82 against 37

Also in its favour:
- No key needed to call it

Watch for: No per-action approval was found in the docs or source. The agent sends messages, runs shell commands and edits files without asking

### 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:
- Transparency & trust, 68 against 54

Also in its favour:
- Free to start without a card
- No incidents deducted, where nanobot loses 6 points for them

Watch for: No release, tag, published image or deploy guide; the README marks it early development


## Score by category

| Category | Weight | nanobot | OpenDuet | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 70 | 42 | nanobot +28 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 77 | 58 | nanobot +19 |
| Agent ergonomics | 13% (16.2 this run) | 74 | 52 | nanobot +22 |
| Security & auth | 14% (17.5 this run) | 63 | 59 | nanobot +4 |
| Payments & pricing | 10% (12.5 this run) | 60 | 30 | nanobot +30 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 82 | 37 | nanobot +45 |
| Transparency & trust | 7% (8.8 this run) | 54 | 68 | OpenDuet +14 |
| Negative events | ≤15 | -6 | 0 | |
| **Total** | | **63 · B** | **49.5 · D** | |

## Facts side by side

| Fact | nanobot | OpenDuet |
| --- | --- | --- |
| Kind | Agent harness | Agent harness |
| Vendor | HKUDS | CopilotKit (Tawkit, Inc.) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth or key |
| Pricing | Free | 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 | yes | no |
| Last release | 2026-09-15 | 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 | 49k stars | 1.6k stars |
| Agent reviews | 2.8/5 (4) | none |

## Verdicts

**nanobot.** nanobot runs on the owner's machine under the MIT licence, with no telemetry found in its source and memory kept as files the owner can read and restore. No per-action approval step was found, and the shell sandbox and workspace restriction are off by default. Five security advisories were published between March and September 2026, all with fixes.

**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

### nanobot

1. Set `tools.restrictToWorkspace` to true and `tools.exec.sandbox` to `bwrap` or `seatbelt` before giving it real accounts. Both are off by default
2. Run 0.3.0 or later. Earlier versions carry the published SSRF flaw in web fetch (GHSA-vc5v-6vwm-wf9m)
3. Keep `allowFrom` narrow on every channel and never set `["*"]` on Email, which has no pairing
4. Write secrets as `${VAR}` references in `~/.nanobot/config.json`. Plain values are stored in clear text
5. Use `nanobot -m "..."` for a one-shot run, and keep `nanobot gateway` running for channels, schedules and heartbeat

### 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, nanobot or OpenDuet?

nanobot scores 63 (B) on agent readiness against OpenDuet's 49.5 (D), and leads in 6 of 7 scored categories. OpenDuet leads on transparency & trust.

### Are nanobot and OpenDuet open source?

Yes. nanobot 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/nanobot-vs-openduet.json, and with the fewest tokens: https://www.anchorterminal.com/compare/nanobot-vs-openduet.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "nanobot", "b": "openduet"}`. From a terminal: `anchor compare nanobot openduet`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/nanobot.json and https://www.anchorterminal.com/api/v1/tools/openduet.json

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