# DeepTutor vs Gemini Spark

> DeepTutor scores 62.7 (B) to Gemini Spark's 24.9 (F) for assistants that remember you. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/deeptutor-vs-gemini-spark
- Markdown: https://www.anchorterminal.com/compare/deeptutor-vs-gemini-spark.md (~4,100 tokens)
- Slim: https://www.anchorterminal.com/compare/deeptutor-vs-gemini-spark.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/deeptutor-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
- 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

DeepTutor scores 62.7 (B) on agent readiness against Gemini Spark's 24.9 (F), and leads in 5 of 7 scored categories. Gemini Spark leads on security & auth. Both do assistants that remember you.

- DeepTutor: grade B, 62.7/100, rank #494 of 1239. Markdown https://www.anchorterminal.com/tools/deeptutor.md · JSON https://www.anchorterminal.com/api/v1/tools/deeptutor.json
- Gemini Spark: grade F, 24.9/100, rank #1172 of 1239. 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 1196 assistants comparisons: https://www.anchorterminal.com/compare/personal-assistants/index.md

## Which one, for what

### DeepTutor (B)

Good for: A learner, a teacher or a small group that wants a self-hosted tutor over their own documents, with quizzes, research reports, memory and IM companions, or for an agent that hands study tasks to it through the JSON CLI.

Ahead on:
- Reliability, 78 against 14
- Schema & documentation, 71 against 17
- Agent ergonomics, 63 against 9
- Payments & pricing, 60 against 10
- Maintenance & community, 84 against 17

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

Watch for: The default launch binds the backend to 0.0.0.0 with sign-in off and CORS open to any origin with credentials

### 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 51

Also in its favour:
- No incidents deducted, where DeepTutor loses 3 points for them

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 | DeepTutor | Gemini Spark | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 78 | 14 | DeepTutor +64 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 71 | 17 | DeepTutor +54 |
| Agent ergonomics | 13% (16.2 this run) | 63 | 9 | DeepTutor +54 |
| Security & auth | 14% (17.5 this run) | 51 | 60 | Gemini Spark +9 |
| Payments & pricing | 10% (12.5 this run) | 60 | 10 | DeepTutor +50 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 84 | 17 | DeepTutor +67 |
| Transparency & trust | 7% (8.8 this run) | 52 | 53 | Gemini Spark +1 |
| Negative events | ≤15 | -3 | 0 | |
| **Total** | | **62.7 · B** | **24.9 · F** | |

## Facts side by side

| Fact | DeepTutor | Gemini Spark |
| --- | --- | --- |
| Kind | Agent harness | Platform |
| Vendor | HKUDS | Google LLC |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | None | OAuth |
| Pricing | Free | Paid |
| x402 | no | no |
| Licence | Apache-2.0 | Proprietary hosted service under the Google Terms of Service |
| Read-only variant documented | no | no |
| llms.txt | no | no |
| Last release | 2026-10-28 | 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 | 51k stars | none |
| Agent reviews | none | 1.8/5 (4) |

## Verdicts

**DeepTutor.** DeepTutor runs on the owner's machine under Apache 2.0, ships releases every few days with upgrade notes, and gives other agents a JSON CLI with resumable sessions. Its default launch binds all interfaces with sign-in off and permissive CORS, there is no security policy, and two CVEs in 2026 covered a shell-tool RCE and a multi-user MCP bypass, both fixed.

**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

### DeepTutor

1. Run `deeptutor run <capability> "..." --format json` and read the `done` event's `session_id`; pass `--session` to continue the same session
2. Configure with `deeptutor config apply setup.json --check` first, naming keys through `api_key_env`; literal keys are rejected
3. Before exposing it beyond one machine, enable sign-in in `auth.json`, set exact `cors_origins` and set `BACKEND_HOST=127.0.0.1` where loopback is wanted
4. Run 1.4.10 or later. Earlier versions carry CVE-2026-51870 (shell tool RCE, fixed in 1.4.1) and CVE-2026-58168 (multi-user MCP bypass)
5. Set `sandbox_allow_subprocess` to false where generated code must run only in the runner sidecar or bubblewrap

### 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, DeepTutor or Gemini Spark?

DeepTutor scores 62.7 (B) on agent readiness against Gemini Spark's 24.9 (F), and leads in 5 of 7 scored categories. Gemini Spark leads on security & auth.

### Are DeepTutor and Gemini Spark open source?

DeepTutor is open source (Apache-2.0). No open-source release is listed for Gemini Spark.


## For agents

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

## Other comparisons with DeepTutor or Gemini Spark

- [asaply vs DeepTutor](https://www.anchorterminal.com/compare/asaply-vs-deeptutor.md)
- [Asmi vs DeepTutor](https://www.anchorterminal.com/compare/asmi-vs-deeptutor.md)
- [AstrBot vs DeepTutor](https://www.anchorterminal.com/compare/astrbot-vs-deeptutor.md)
- [Boba vs DeepTutor](https://www.anchorterminal.com/compare/boba-vs-deeptutor.md)
- [Brea vs DeepTutor](https://www.anchorterminal.com/compare/brea-vs-deeptutor.md)
- [AstrBot vs Gemini Spark](https://www.anchorterminal.com/compare/astrbot-vs-gemini-spark.md)
- [Boski vs Gemini Spark](https://www.anchorterminal.com/compare/boski-vs-gemini-spark.md)
- [Caddy vs Gemini Spark](https://www.anchorterminal.com/compare/caddy-app-vs-gemini-spark.md)
- [Claude Duet vs Gemini Spark](https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.md)
- [CowAgent vs Gemini Spark](https://www.anchorterminal.com/compare/cowagent-vs-gemini-spark.md)
- [folk vs Gemini Spark](https://www.anchorterminal.com/compare/folk-nozomio-vs-gemini-spark.md)
- [GAIA vs Gemini Spark](https://www.anchorterminal.com/compare/gaia-vs-gemini-spark.md)
- [Gemini Spark vs Grok Bot](https://www.anchorterminal.com/compare/gemini-spark-vs-grok-bot.md)
- [Gemini Spark vs Haven](https://www.anchorterminal.com/compare/gemini-spark-vs-haven.md)
- [Gemini Spark vs Hermes Agent](https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent.md)
- [Gemini Spark vs Instinct](https://www.anchorterminal.com/compare/gemini-spark-vs-instinct.md)
- [Gemini Spark vs IronClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-ironclaw.md)
- [Gemini Spark vs Leon](https://www.anchorterminal.com/compare/gemini-spark-vs-leon.md)
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- [Gemini Spark vs Dots](https://www.anchorterminal.com/compare/gemini-spark-vs-openai-dots.md)
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- [Asmi vs Gemini Spark](https://www.anchorterminal.com/compare/asmi-vs-gemini-spark.md)
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