EngineAI vs Slingshot AI
Which Foundation Models AI tool is better in 2026?
EngineAI
Legged and humanoid robots powered by the SEED multimodal model
Slingshot AI
Foundation model and AI app for mental health
Side-by-side
EngineAI is the more established option (raised $166M), but Slingshot AI is cheaper to start.
| Metric | EngineAI | Slingshot AI |
|---|---|---|
| Taglinei | Legged and humanoid robots powered by the SEED multimodal model | Foundation model and AI app for mental health |
| Foundedi | 2022🏆 | 2023 |
| HQi | Shenzhen, CN | New York, US |
| Employeesi | 201-500 | 51-100🏆 |
| Neuron scorei | 69 | 80🏆 |
| Total fundingi | $166M🏆 | $93M |
| Latest roundi | Series A1 · Jul 2025 | Series A Extension · Jul 2025 |
| 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 | Enterprise · Contact sales | Freemium |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for EngineAI and Slingshot AI.
| Capability | EngineAI | Slingshot AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✗ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of EngineAI
- Has raised more capital ($166M vs $93M)
- More mature (2022)
🔵 Strengths of Slingshot AI
- Higher Neuron score (80 vs 69)
- Newer company (2023)
Which should you choose?
Choose Slingshot AI if price matters most — it starts at Freemium, which is friendlier for teams watching burn. Both Foundation Models tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose EngineAI if you want the most established option — it has raised $166M, 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
EngineAI vs Slingshot AI — which is better?
It depends on your priority. EngineAI has raised more capital and is the more established option; Slingshot AI is cheaper to start. See the side-by-side table above.
Is EngineAI cheaper than Slingshot AI?
No — Slingshot AI's cheapest paid plan is Freemium, while EngineAI's is Enterprise · Contact sales.
Do EngineAI and Slingshot AI offer free plans?
EngineAI: Paid only. Slingshot AI: Paid only.
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