# Atticus vs Gemini Spark

> Atticus scores 42.9 (E) to Gemini Spark's 24.5 (F) for assistants that remember you. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/atticus-vs-gemini-spark
- Markdown: https://www.anchorterminal.com/compare/atticus-vs-gemini-spark.md (~3,500 tokens)
- Slim: https://www.anchorterminal.com/compare/atticus-vs-gemini-spark.min.md (~630 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/atticus-vs-gemini-spark.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
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-15

Atticus scores 42.9 (E) on agent readiness against Gemini Spark's 24.5 (F), and leads in 4 of 7 scored categories. Gemini Spark leads on security & auth. Both do assistants that remember you.

- Atticus: grade E, 42.9/100, rank #974 of 1094. Markdown https://www.anchorterminal.com/tools/atticus.md · JSON https://www.anchorterminal.com/api/v1/tools/atticus.json
- Gemini Spark: grade F, 24.5/100, rank #1046 of 1094. Markdown https://www.anchorterminal.com/tools/gemini-spark.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-spark.json
- Best AI personal assistants that act for one person: https://www.anchorterminal.com/best/personal-assistants/index.md
- All 875 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 14
- Payments & pricing, 60 against 10
- Maintenance & community, 51 against 17
- Transparency & trust, 56 against 49

Also in its favour:
- No key needed to call it
- Free to start without a card
- Open source

Watch for: No API, MCP server or documented command an outside agent can call

### Gemini Spark (F)

Good for: A person who already keeps mail, calendar and files in a personal Google Account and accepts Keep Activity being on.

Ahead on:
- Security & auth, 60 against 49

Watch for: No public API, SDK or MCP server for an outside agent was found. Spark is reached in the Gemini mobile app, the Mac app and gemini.google.com


## Score by category

| Category | Weight | Atticus | Gemini Spark | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 68 | 14 | Atticus +54 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 15 | 17 | Gemini Spark +2 |
| Agent ergonomics | 13% (16.2 this run) | 9 | 9 | even |
| Security & auth | 14% (17.5 this run) | 49 | 60 | Gemini Spark +11 |
| Payments & pricing | 10% (12.5 this run) | 60 | 10 | Atticus +50 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 51 | 17 | Atticus +34 |
| Transparency & trust | 7% (8.8 this run) | 56 | 49 | Atticus +7 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **42.9 · E** | **24.5 · F** | |

## Facts side by side

| Fact | Atticus | Gemini Spark |
| --- | --- | --- |
| Kind | Platform | Platform |
| Vendor | SaarthurR (Saarth Ranka) | Google LLC |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth |
| Pricing | Your plan | Paid |
| x402 | no | no |
| Licence | MIT | Proprietary hosted service under the Google Terms of Service |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-14 | 2026-05-19 |
| Terms last updated | no document linked | 2026-07-30 |
| Privacy policy last updated | no document linked | 2026-09-24 |
| Customer content may train models |  | yes, with an opt-out |
| Terms restrict automated access |  | yes |
| Terms restrict benchmarking |  | not found in the text |
| Terms or service can change without notice |  | not found in the text |
| Arbitration or class-action waiver |  | not found in the text |
| Popularity | 163 stars | 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.

**Gemini Spark.** Google's help pages state what Spark confirms before doing, how to delete its remote browser and code data, and the risks of prompt injection. Spark has no public API, Google calls it experimental, and it runs only with Keep Activity on, the setting under which chats are used for model training and human review.

## 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

### Gemini Spark

1. Do not plan an integration against Spark. No public API or MCP server was found, and a person must hold a Google AI Pro or Ultra subscription
2. Expect a confirmation request before sends, edits, purchases and web form submissions, and note that bulk changes to private Google Tasks run without one
3. Delete remote browser data and remote code execution data in Gemini Spark Settings after a sensitive session. Deleting a task thread or Gemini Apps activity does not remove them
4. Keep within 15 running tasks and 50 active schedules. A schedule does not run when 15 tasks are running or the usage limit is reached
5. Treat every safety statement here as Google's own description. None was tested, and no message was sent to the service

## Questions

### Which is better for AI agents, Atticus or Gemini Spark?

Atticus scores 42.9 (E) on agent readiness against Gemini Spark's 24.5 (F), and leads in 4 of 7 scored categories. Gemini Spark leads on security & auth.

### Are Atticus and Gemini Spark open source?

Atticus is open source (MIT). No open-source release is listed for Gemini Spark.


## For agents

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

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