Decagon vs Letta
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Decagon and Letta are credible customer support tools, and the right pick comes down to your priorities.
Decagon — AI customer support agents for enterprises.
Choose Letta if you'd rather have a lower starting price (free) and a free plan to start on. Framework for stateful AI agents with memory.
Decagon vs Letta: side by side
| Dimension | Decagon | Letta |
|---|---|---|
| Starting price | Custom | FreeWinner |
| Free plan | No | YesWinner |
| Pricing model | Subscription | Open source |
| Best for | Enterprise | Developers, Ai Engineers |
| Platforms | Web, Api | Self Hosted, Api, Web |
| Rating | 4.6/5 | 4.4/5 |
Decagon key facts
- Vendor
- Decagon
- Pricing
- Subscription — Custom
- Free tier
- No
- Platforms
- Web, Api
- Best for
- Enterprise
- Editor rating
- 4.6 / 5
- Founded
- 2023
- Headquarters
- San Francisco, CA, USA
Letta key facts
- Vendor
- Letta
- Pricing
- Open source — Free
- Free tier
- Yes
- Platforms
- Self Hosted, Api, Web
- Best for
- Developers, Ai Engineers
- Editor rating
- 4.4 / 5
- Founded
- 2023
- Headquarters
- San Francisco, CA, USA
Frequently asked questions
Is Decagon better than Letta?
Neither is universally better — Decagon edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Decagon or Letta cheaper?
Letta is the more affordable of the two to get started, at free. Decagon starts at custom; Letta starts at free.
Can Decagon replace Letta?
Yes for most teams — both are customer support tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.