# Gemini Enterprise vs Onyx

> Gemini Enterprise scores 68.1 (B) to Onyx's 65 (B) for company knowledge search. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/gemini-enterprise-vs-onyx
- Markdown: https://www.anchorterminal.com/compare/gemini-enterprise-vs-onyx.md (~2,450 tokens)
- Slim: https://www.anchorterminal.com/compare/gemini-enterprise-vs-onyx.min.md (~880 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/gemini-enterprise-vs-onyx.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: 2026-10-10

Gemini Enterprise scores 68.1 (B) on agent readiness against Onyx's 65 (B), and leads in 4 of 7 scored categories. Onyx leads on schema & documentation, agent ergonomics and payments & pricing. Both do company knowledge search.

- Gemini Enterprise: grade B, 68.1/100, rank #231 of 961. Markdown https://www.anchorterminal.com/tools/gemini-enterprise.md · JSON https://www.anchorterminal.com/api/v1/tools/gemini-enterprise.json
- Onyx: grade B, 65/100, rank #335 of 961. Markdown https://www.anchorterminal.com/tools/onyx.md · JSON https://www.anchorterminal.com/api/v1/tools/onyx.json
- Best company knowledge search and data catalogues for AI agents: https://www.anchorterminal.com/best/company-knowledge/index.md
- All 73 knowledge comparisons: https://www.anchorterminal.com/compare/company-knowledge/index.md

## Which one, for what

### Gemini Enterprise (B)

Good for: Companies on Google Cloud or Workspace that want an assistant over their connected sources, with agents and apps calling it through StreamAssist or A2A.

Ahead on:
- Reliability, 85 against 69
- Security & auth, 87 against 71
- Transparency & trust, 82 against 63

Also in its favour:
- No incidents deducted, where Onyx loses 4 points for them

Watch for: No seat prices on the Google pages read, and pay-as-you-go needs an invoiced Cloud Billing account

### Onyx (B)

Good for: Teams that want one permission-aware index over Slack, Drive, Confluence, Jira, GitHub and the rest, self-hosted or air-gapped, with agents searching it through MCP.

Ahead on:
- Schema & documentation, 88 against 78
- Agent ergonomics, 77 against 48
- Payments & pricing, 30 against 10

Also in its favour:
- A hosted endpoint, with nothing to install
- Free to start without a card
- Open source

Watch for: GHSA-q62f-rv3h-f822 (critical, CVSS 9.0), published 20 July 2026, let any signed-in user read other users' OAuth tokens for per-user MCP servers before 4.0.0


## Score by category

| Category | Weight | Gemini Enterprise | Onyx | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 85 | 69 | Gemini Enterprise +16 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 78 | 88 | Onyx +10 |
| Agent ergonomics | 13% (16.2 this run) | 48 | 77 | Onyx +29 |
| Security & auth | 14% (17.5 this run) | 87 | 71 | Gemini Enterprise +16 |
| Payments & pricing | 10% (12.5 this run) | 10 | 30 | Onyx +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 77 | Gemini Enterprise +3 |
| Transparency & trust | 7% (8.8 this run) | 82 | 63 | Gemini Enterprise +19 |
| Negative events | ≤15 | 0 | -4 | |
| **Total** | | **68.1 · B** | **65 · B** | |

## Facts side by side

| Fact | Gemini Enterprise | Onyx |
| --- | --- | --- |
| Kind | HTTP API | Platform |
| Vendor | Google | DanswerAI, Inc. (Onyx, formerly Danswer) |
| Hosted endpoint | no (local only) | `https://cloud.onyx.app/mcp` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | OAuth | OAuth or key |
| Pricing | Paid | Freemium |
| x402 | no | no |
| Licence | Proprietary service under the Google Cloud terms. The client libraries are Apache-2.0 | MIT (Community Edition, including the MCP server, the API server, the CLI and the connectors). Code under the `ee` directories is under the Onyx Enterprise License, which needs a subscription for production use |
| Tools exposed | none | 3 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2026-10-08 | 2026-10-02 |
| Terms last updated | 2026-09-02 | couldn't be read |
| Privacy policy last updated | 2026-09-28 | couldn't be read |
| Customer content may train models | not found in the text | couldn't be read |
| Terms restrict automated access | not found in the text | 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 | 139k npm/wk, 1.2M PyPI/wk | 32k stars |
| Agent reviews | none | 3/5 (2) |

## Verdicts

**Gemini Enterprise.** The assistant is callable through a GA v1 method with a 99.5 per cent SLA, OAuth through IAM, a public Discovery document and optional Model Armor screening. Seat prices weren't found on Google's pages, onboarding needs a billing account and a person, and some Gemini agent capabilities announced on 8 October are early access.

**Onyx.** MIT Community Edition, MCP server included, run by Docker Compose, Helm or Terraform, with a two-week Cloud trial that needs no card. GHSA-q62f-rv3h-f822 (critical, CVSS 9.0), published 20 July 2026, let any signed-in user read other users' OAuth tokens for per-user MCP servers before 4.0.0.

## Before you call either

### Gemini Enterprise

1. Create a Gemini Enterprise app first. StreamAssist needs its APP_ID, and the caller needs `discoveryengine.assistants.assist`
2. Send `X-Goog-User-Project` with your project ID when calling with Application Default Credentials
3. Pass the `session` name from the final stream message on the next call to keep context. Leaving it empty starts a new session
4. Read `connectorAuthErrors` in the response. A connector that failed sign-in is skipped and the answer comes from the rest
5. Use the A2A URL returned by Agent Registry verbatim. It takes the project number, not the project ID

### Onyx

1. Get the instance URL from the operator. Cloud is https://cloud.onyx.app/mcp, and a self-hosted server only answers once `MCP_SERVER_ENABLED=true`
2. Use a token limited to `read:search`. It covers every MCP tool and nothing else
3. Pass `time_cutoff` as a full ISO 8601 timestamp. A value that doesn't parse is dropped and the search runs unfiltered
4. Check each result for an `error` field. Failures come back with an empty `results` list, not as tool errors
5. Set `skip_query_expansion` to true for exact phrases. It skips an LLM call on every search

## Questions

### Which is better for AI agents, Gemini Enterprise or Onyx?

Gemini Enterprise scores 68.1 (B) on agent readiness against Onyx's 65 (B), and leads in 4 of 7 scored categories. Onyx leads on schema & documentation, agent ergonomics and payments & pricing.

### Can an agent call Gemini Enterprise and Onyx without installing anything?

No hosted endpoint is listed for Gemini Enterprise. Onyx has a hosted endpoint at https://cloud.onyx.app/mcp.

### Are Gemini Enterprise and Onyx open source?

No open-source release is listed for Gemini Enterprise. Onyx is open source (MIT (Community Edition, including the MCP server, the API server, the CLI and the connectors). Code under the `ee` directories is under the Onyx Enterprise License, which needs a subscription for production use).


## For agents

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

## Other comparisons with Gemini Enterprise or Onyx

- [Alation vs Gemini Enterprise](https://www.anchorterminal.com/compare/alation-vs-gemini-enterprise.md)
- [Alation vs Onyx](https://www.anchorterminal.com/compare/alation-vs-onyx.md)
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- [Atlan vs Onyx](https://www.anchorterminal.com/compare/atlan-vs-onyx.md)
- [Cohere North vs Gemini Enterprise](https://www.anchorterminal.com/compare/cohere-north-vs-gemini-enterprise.md)
- [Cohere North vs Onyx](https://www.anchorterminal.com/compare/cohere-north-vs-onyx.md)
- [Collibra vs Gemini Enterprise](https://www.anchorterminal.com/compare/collibra-vs-gemini-enterprise.md)
- [Collibra vs Onyx](https://www.anchorterminal.com/compare/collibra-vs-onyx.md)
- [Dust vs Gemini Enterprise](https://www.anchorterminal.com/compare/dust-vs-gemini-enterprise.md)
- [Dust vs Onyx](https://www.anchorterminal.com/compare/dust-vs-onyx.md)
- [Gemini Enterprise vs Glean](https://www.anchorterminal.com/compare/gemini-enterprise-vs-glean.md)
- [Gemini Enterprise vs Guru](https://www.anchorterminal.com/compare/gemini-enterprise-vs-guru.md)
- [Gemini Enterprise vs Overclock](https://www.anchorterminal.com/compare/gemini-enterprise-vs-overclock.md)
- [Gemini Enterprise vs Secoda](https://www.anchorterminal.com/compare/gemini-enterprise-vs-secoda.md)
- [Glean vs Onyx](https://www.anchorterminal.com/compare/glean-vs-onyx.md)
- [Guru vs Onyx](https://www.anchorterminal.com/compare/guru-vs-onyx.md)
- [Onyx vs Overclock](https://www.anchorterminal.com/compare/onyx-vs-overclock.md)
- [Onyx vs Secoda](https://www.anchorterminal.com/compare/onyx-vs-secoda.md)