Moss vs Onyx
Which Search AI tool is better in 2026?
Moss
Real-time semantic search for Conversational AI
Onyx
Side-by-side
Onyx is the more established option (raised $10M); pricing is comparable on both sides.
| Metric | Moss | Onyx |
|---|---|---|
| Taglinei | Real-time semantic search for Conversational AI | — |
| Foundedi | 2025🏆 | — |
| HQi | San Francisco, US | — |
| Employeesi | 1-10 | 11-50🏆 |
| Neuron scorei | 44 | 72🏆 |
| Total fundingi | $500K | $10M🏆 |
| Latest roundi | Seed · Jan 2025 | Seed |
| Valuationi | — | — |
| Cheapest paid plani | Pricing not disclosed | Pricing not disclosed |
| Free plani | ✗ | ✓ |
| Free triali | ✗ | ✓ |
| Top tier pricei | Pricing not disclosed | Pricing not disclosed |
| Pricing summaryi | Pricing not listed | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Moss and Onyx.
| Capability | Moss | Onyx |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Moss
- Newer company (2025)
🔵 Strengths of Onyx
- Has raised more capital ($10M vs $500K)
- Higher Neuron score (72 vs 44)
- Offers a free plan
- Offers a free trial
Which should you choose?
Choose Onyx if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Search tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Onyx if you want the most established option — it has raised $10M, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
Moss vs Onyx — which is better?
It depends on your priority. Moss is the leaner option; Onyx has broader feature depth. See the side-by-side table above.
Is Moss cheaper than Onyx?
No — Onyx's cheapest paid plan is Free, while Moss's is Pricing not listed.
Do Moss and Onyx offer free plans?
Moss: Paid only. Onyx: Yes, has a free plan.
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