Dust vs Lemma
Which Agents AI tool is better in 2026?
Dust
Deploy, orchestrate, and govern fleets of specialized AI agents safely connected to your company's knowledge and tools.
Lemma
Reliability platform that catches AI agent regressions and auto-optimizes prompts in production.
Side-by-side
Dust is the more established option (raised $21M); pricing is comparable on both sides.
| Metric | Dust | Lemma |
|---|---|---|
| Taglinei | Deploy, orchestrate, and govern fleets of specialized AI agents safely connected to your company's knowledge and tools. | Reliability platform that catches AI agent regressions and auto-optimizes prompts in production. |
| Foundedi | 2023🏆 | 2025 |
| HQi | FR | San Francisco, US |
| Employeesi | 51-200🏆 | — |
| Neuron scorei | 61🏆 | 45 |
| Total fundingi | $21M🏆 | $500K |
| Latest roundi | Series A · Jun 2024 | Seed · Sep 2025 |
| Valuationi | — | — |
| Cheapest paid plani | — | Pricing not disclosed |
| Free plani | ✓ Free | ✗ |
| Free triali | ✓ | ✓ |
| Top tier pricei | Enterprise · Contact sales | Pricing not disclosed |
| Pricing summaryi | 2 published plans | Free trial |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Dust and Lemma.
| Capability | Dust | Lemma |
|---|---|---|
| MCP support | ✗ | ✓ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✓ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Dust
- Has raised more capital ($21M vs $500K)
- Higher Neuron score (61 vs 45)
- Offers a free plan
- More mature (2023)
🔵 Strengths of Lemma
- Newer company (2025)
Which should you choose?
Choose Lemma if price matters most — it starts at Free trial, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Dust if you want the most established option — it has raised $21M, 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
Dust vs Lemma — which is better?
It depends on your priority. Dust has raised more capital and is the more established option; Lemma has broader feature depth. See the side-by-side table above.
Is Dust cheaper than Lemma?
No — Lemma's cheapest paid plan is Free trial, while Dust's is Free.
Do Dust and Lemma offer free plans?
Dust: Yes, has a free plan. Lemma: Free trial only.
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