Head to head · Business · updated Oct 15, 2026
Sierra vs Chatbase
Sierra scores 18 to Chatbase's 16 on public evidence for customer support chatbot, and they rank #1 and #2 there. Only Chatbase has a free tier. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Sierra
Enterprise conversational AI agents for customer service across chat and voice, built with brand-specific guardrails.
+ Agents take real actions (returns, bookings, account changes) with strong guardrails, and you pay only for resolved cases.
− Enterprise sales process and pricing; not self-serve for small businesses.
Chatbase
Build a custom support chatbot trained on your website, docs and files and embed it with a snippet.
+ Paste a URL and have a working embedded bot in minutes, with actions for lookups and lead capture.
− Message credits are tight on lower tiers, and answers drift when the source content is thin.
Side by side
public evidence| Sierra | Chatbase | |
|---|---|---|
| Evidence score / 100 | 18 | 16 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 4 | 1 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Paid · Outcome-based, per resolution | Free tier · Hobby $40/mo |
| Platforms | web | web, api |
| Maker | Sierra | Chatbase |
Which one?
Pick Sierra if
- you want the stronger public evidence (18 vs 16)
Best for large brands automating support actions.
Pick Chatbase if
- you want a free tier to start on
- you need it on api
Best for a quick website support bot.