# Gemini Spark vs Hermes Agent

> Hermes Agent scores 67.9 (B) to Gemini Spark's 24.5 (F) for assistant proactive. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent
- Markdown: https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent.md (~2,700 tokens)
- Slim: https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gemini-spark-vs-hermes-agent.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
- Updated: 2026-10-12

Hermes Agent scores 67.9 (B) on agent readiness against Gemini Spark's 24.5 (F), and leads in every scored category. Both do assistant proactive.

- Gemini Spark: grade F, 24.5/100, rank #974 of 986. Markdown https://www.anchorterminal.com/tools/gemini-spark.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-spark.json
- Hermes Agent: grade B, 67.9/100, rank #244 of 986. Markdown https://www.anchorterminal.com/tools/hermes-agent.md · JSON https://www.anchorterminal.com/api/v1/tools/hermes-agent.json
- Best AI personal assistants that act for one person: https://www.anchorterminal.com/best/personal-assistants/index.md
- All 190 assistants comparisons: https://www.anchorterminal.com/compare/personal-assistants/index.md

## Which one, for what

### 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.

Also in its favour:
- No incidents deducted, where Hermes Agent 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

### Hermes Agent (B)

Good for: A technical owner who wants one always-on agent across chat apps with memory and scheduled jobs, on their own machine or a small server, with any model.

Ahead on:
- Reliability, 57 against 14
- Schema & documentation, 80 against 17
- Agent ergonomics, 80 against 9
- Security & auth, 75 against 60
- Payments & pricing, 60 against 10
- Maintenance & community, 84 against 17
- Transparency & trust, 63 against 49

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

Watch for: The default terminal backend runs commands on the host, and the default `smart` mode lets an auxiliary model approve commands it rates low-risk


## Score by category

| Category | Weight | Gemini Spark | Hermes Agent | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 14 | 57 | Hermes Agent +43 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 17 | 80 | Hermes Agent +63 |
| Agent ergonomics | 13% (16.2 this run) | 9 | 80 | Hermes Agent +71 |
| Security & auth | 14% (17.5 this run) | 60 | 75 | Hermes Agent +15 |
| Payments & pricing | 10% (12.5 this run) | 10 | 60 | Hermes Agent +50 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 17 | 84 | Hermes Agent +67 |
| Transparency & trust | 7% (8.8 this run) | 49 | 63 | Hermes Agent +14 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **24.5 · F** | **67.9 · B** | |

## Facts side by side

| Fact | Gemini Spark | Hermes Agent |
| --- | --- | --- |
| Kind | Platform | Agent harness |
| Vendor | Google LLC | Nous Research |
| Hosted endpoint | no (local only) | no (local only) |
| Transports |  |  |
| Auth | OAuth | None |
| Pricing | Paid | Free |
| x402 | no | no |
| Licence | Proprietary hosted service under the Google Terms of Service | MIT |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-05-19 | 2026-10-11 |
| Terms last updated | 2026-07-30 | no document linked |
| Privacy policy last updated | 2026-09-24 | no document linked |
| 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 | none | 253k stars |

## Verdicts

**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.

**Hermes Agent.** Card payments always ask first and are refused in unattended sessions, and the messaging gateway denies every sender until an allowlist is set. Shell commands run on the host by default with a model judging risk, and sending mail through the Google Workspace skill is held back only by an instruction to the model.

## Before you call either

### 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

### Hermes Agent

1. Set `approvals.mode: manual` before giving it real accounts. The default `smart` lets an auxiliary model approve commands
2. Run the gateway with `terminal.backend: docker` or the project's Docker image when it reads mail, web pages or group chats
3. Set `memory.write_approval: true` and `skills.write_approval: true` to review what it saves about the owner
4. Leave `approvals.cron_mode` and `approvals.unattended_mode` at `deny` for scheduled and webhook runs
5. Set `TELEGRAM_ALLOWED_USERS` or the matching allowlist per channel. Never set `GATEWAY_ALLOW_ALL_USERS=true`

## Questions

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

Hermes Agent scores 67.9 (B) on agent readiness against Gemini Spark's 24.5 (F), and leads in every scored category.

### Are Gemini Spark and Hermes Agent open source?

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


## For agents

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

## Other comparisons with Gemini Spark or Hermes Agent

- [AstrBot vs Gemini Spark](https://www.anchorterminal.com/compare/astrbot-vs-gemini-spark.md)
- [AstrBot vs Hermes Agent](https://www.anchorterminal.com/compare/astrbot-vs-hermes-agent.md)
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- [Gemini Spark vs IronClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-ironclaw.md)
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- [Gemini Spark vs nanobot](https://www.anchorterminal.com/compare/gemini-spark-vs-nanobot.md)
- [Gemini Spark vs NanoClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-nanoclaw.md)
- [Gemini Spark vs Dots](https://www.anchorterminal.com/compare/gemini-spark-vs-openai-dots.md)
- [Gemini Spark vs OpenClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-openclaw.md)
- [Gemini Spark vs PicoClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-picoclaw.md)
- [Gemini Spark vs Poke](https://www.anchorterminal.com/compare/gemini-spark-vs-poke.md)
- [Gemini Spark vs QwenPaw](https://www.anchorterminal.com/compare/gemini-spark-vs-qwenpaw.md)
- [Gemini Spark vs ZeroClaw](https://www.anchorterminal.com/compare/gemini-spark-vs-zeroclaw.md)
- [Gemini Spark vs Zo Computer](https://www.anchorterminal.com/compare/gemini-spark-vs-zo-computer.md)
- [Grok Bot vs Hermes Agent](https://www.anchorterminal.com/compare/grok-bot-vs-hermes-agent.md)
- [Haven vs Hermes Agent](https://www.anchorterminal.com/compare/haven-vs-hermes-agent.md)
- [Hermes Agent vs Instinct](https://www.anchorterminal.com/compare/hermes-agent-vs-instinct.md)
- [Hermes Agent vs IronClaw](https://www.anchorterminal.com/compare/hermes-agent-vs-ironclaw.md)
- [Hermes Agent vs Leon](https://www.anchorterminal.com/compare/hermes-agent-vs-leon.md)
- [Hermes Agent vs Lindy](https://www.anchorterminal.com/compare/hermes-agent-vs-lindy.md)
- [Hermes Agent vs nanobot](https://www.anchorterminal.com/compare/hermes-agent-vs-nanobot.md)
- [Hermes Agent vs NanoClaw](https://www.anchorterminal.com/compare/hermes-agent-vs-nanoclaw.md)
- [Hermes Agent vs Dots](https://www.anchorterminal.com/compare/hermes-agent-vs-openai-dots.md)
- [Hermes Agent vs OpenClaw](https://www.anchorterminal.com/compare/hermes-agent-vs-openclaw.md)
- [Hermes Agent vs PicoClaw](https://www.anchorterminal.com/compare/hermes-agent-vs-picoclaw.md)
- [Hermes Agent vs Poke](https://www.anchorterminal.com/compare/hermes-agent-vs-poke.md)
- [Hermes Agent vs QwenPaw](https://www.anchorterminal.com/compare/hermes-agent-vs-qwenpaw.md)
- [Hermes Agent vs ZeroClaw](https://www.anchorterminal.com/compare/hermes-agent-vs-zeroclaw.md)
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