Filum AI vs Sierra
Which Customer Support AI tool is better in 2026?
Filum AI
AI customer experience management platform for Southeast Asia
Sierra
Conversational AI agents for every business
Side-by-side
Sierra is the more established option (raised $2.2B); pricing is comparable on both sides.
| Metric | Filum AI | Sierra |
|---|---|---|
| Taglinei | AI customer experience management platform for Southeast Asia | Conversational AI agents for every business |
| Foundedi | 2020🏆 | 2023 |
| HQi | Ho Chi Minh City, VN | San Francisco, US |
| Employeesi | 11-50🏆 | 100-200 |
| Neuron scorei | 60 | 89🏆 |
| Total fundingi | $1M | $2.2B🏆 |
| Latest roundi | Seed · Mar 2025 | Series D · May 2026 |
| Valuationi | — | $15.8B🏆 |
| Cheapest paid plani | Pricing not disclosed | — |
| Free plani | ✓ | ✗ |
| Free triali | ✓ | ✗ |
| Top tier pricei | Pricing not disclosed | Enterprise · Contact sales |
| Pricing summaryi | Free | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Filum AI and Sierra.
| Capability | Filum AI | Sierra |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | — | — |
| Free plan | ✓ | ✗ |
| Free trial | ✓ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Filum AI
- Offers a free plan
- Offers a free trial
- More mature (2020)
🔵 Strengths of Sierra
- Has raised more capital ($2.2B vs $1M)
- Higher Neuron score (89 vs 60)
- Newer company (2023)
- Verified profile
Which should you choose?
Choose Sierra if price matters most — it starts at Enterprise · Contact sales, which is friendlier for teams watching burn. Both AI Customer Support tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Sierra if you want the most established option — it has raised $2.2B, 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
Filum AI vs Sierra — which is better?
It depends on your priority. Filum AI is the leaner option; Sierra has broader feature depth. See the side-by-side table above.
Is Filum AI cheaper than Sierra?
No — Sierra's cheapest paid plan is Enterprise · Contact sales, while Filum AI's is Free.
Do Filum AI and Sierra offer free plans?
Filum AI: Yes, has a free plan. Sierra: Paid only.
Explore more AI Customer Support tools
Contextual paths to related AI startups, deals and rankings.