Chatbots · Head to head
Rasa vs Amazon Lex: which is better?
Short answer
They are priced differently (Free vs $0.00 / unit). Pick Rasa for developers self-hosting conversational AI; pick Amazon Lex for AWS teams building voice and text bots.
| Fact | Rasa | Amazon Lex | Edge |
|---|---|---|---|
| Best for | Developers self-hosting conversational AI | AWS teams building voice and text bots | — |
| Free plan | Yes, 1 bot, 1,000 conversations/mo | No | Rasa |
| Entry plan | — | Speech requests: $0.00 / unit | — |
| Mid plan | — | Text requests: $0.00 / unit | — |
| Top plan | — | Text requests: $0.00 / unit | — |
| 1st year | $0 | Usage-based | — |
| Platforms | Web, API, Linux | API, Web | Rasa |
Edge = the better published number or limit; we do not test the tools hands-on.
Which has the better free plan, Rasa or Amazon Lex?
Rasa: Yes, 1 bot, 1,000 conversations/mo.
Should you pick Rasa or Amazon Lex?
Pick Rasa if
- you want developers self-hosting conversational AI
- the free plan is enough (1 bot, 1,000 conversations/mo)
Pick Amazon Lex if
- you want AWS teams building voice and text bots
- you can pay $0.00 / unit from day one
Sources
| Vendor page | URL | Checked |
|---|---|---|
| Rasa pricing | rasa.com/pricing/ | 27 Oct 2026 |
| Amazon Lex pricing | aws.amazon.com/lex/pricing/ | 27 Oct 2026 |
Prices in USD as published by each vendor, billed yearly where offered. How we compare