Moonvalley vs Sieve
Which Video AI tool is better in 2026?
Moonvalley
Los Angeles-based AI research company building Marey, a production-grade generative video
Sieve
AI video APIs for understanding, dubbing, and editing
Side-by-side
Moonvalley is the more established option (raised $154M); pricing is comparable on both sides.
| Metric | Moonvalley | Sieve |
|---|---|---|
| Taglinei | Los Angeles-based AI research company building Marey, a production-grade generative video | AI video APIs for understanding, dubbing, and editing |
| Foundedi | 2024 | 2021🏆 |
| HQi | — | San Francisco, US |
| Employeesi | 11-50 | 11-50 |
| Neuron scorei | 74🏆 | 51 |
| Total fundingi | $154M🏆 | $12M |
| Latest roundi | Seed | 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 | Free | Free |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Moonvalley and Sieve.
| Capability | Moonvalley | Sieve |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Moonvalley
- Has raised more capital ($154M vs $12M)
- Higher Neuron score (74 vs 51)
- Newer company (2024)
🔵 Strengths of Sieve
- More mature (2021)
Which should you choose?
Choose Sieve if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Video tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Moonvalley if you want the most established option — it has raised $154M, 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
Moonvalley vs Sieve — which is better?
It depends on your priority. Moonvalley has raised more capital and is the more established option; Sieve has broader feature depth. See the side-by-side table above.
Is Moonvalley cheaper than Sieve?
No — Sieve's cheapest paid plan is Free, while Moonvalley's is Free.
Do Moonvalley and Sieve offer free plans?
Moonvalley: Yes, has a free plan. Sieve: Yes, has a free plan.
Explore more AI Video tools
Contextual paths to related AI startups, deals and rankings.