Chatbase vs Sierra
Which Chatbots AI tool is better in 2026?
Chatbase
Custom AI chatbots trained on your data.
Sierra
Conversational AI agents for every business
Side-by-side
Sierra is the more established option (raised $2.2B), but Chatbase is cheaper to start.
| Metric | Chatbase | Sierra |
|---|---|---|
| Taglinei | Custom AI chatbots trained on your data. | Conversational AI agents for every business |
| Foundedi | 2023 | 2023 |
| HQi | San Francisco, US | San Francisco, US |
| Employeesi | 11-50🏆 | 100-200 |
| Neuron scorei | 50 | 66🏆 |
| Total fundingi | $3M | $2.2B🏆 |
| Latest roundi | Seed · Nov 2023 | Series D · May 2026 |
| Valuationi | — | $15.8B🏆 |
| Cheapest paid plani | —🏆 | — |
| Free plani | ✓ Build your agent for free | ✗ |
| Free triali | ✗ | ✗ |
| Top tier pricei | Enterprise · Contact sales | Enterprise · Contact sales |
| Pricing summaryi | 2 published plans | 1 published plans |
| Categoriesi |
Capability matrix
Developer-facing capabilities and access signals for Chatbase and Sierra.
| Capability | Chatbase | Sierra |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✓ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 1 (JavaScript) | — |
| Free plan | ✓ | ✗ |
| Free trial | ✗ | ✗ |
| Verified | ✗ | ✓ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Chatbase
- Offers a free plan
- Lower starting price ($19/mo)
🔵 Strengths of Sierra
- Has raised more capital ($2.2B vs $3M)
- Higher Neuron score (66 vs 50)
- Verified profile
Which should you choose?
Choose Chatbase if price matters most — it starts at Free · From $19/mo, which is friendlier for teams watching burn. Both AI Chatbots 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
Chatbase vs Sierra — which is better?
It depends on your priority. Chatbase is the leaner option; Sierra has broader feature depth. See the side-by-side table above.
Is Chatbase cheaper than Sierra?
Yes — Chatbase's cheapest paid plan is Free, while Sierra's is Enterprise · Contact sales.
Do Chatbase and Sierra offer free plans?
Chatbase: Yes, has a free plan. Sierra: Paid only.
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