LangGraph vs Retell AI
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both LangGraph and Retell AI are credible ai agents tools, and the right pick comes down to your priorities.
LangGraph — Build stateful, controllable agent workflows.
Retell AI — Build AI voice agents for phone calls.
LangGraph vs Retell AI: side by side
| Dimension | LangGraph | Retell AI |
|---|---|---|
| Starting price | Free | Free |
| Free plan | Yes | Yes |
| Pricing model | Open source | Usage-based |
| Best for | Developers, Ai Engineers, Enterprise | Developers, Smb, Enterprise |
| Platforms | Self Hosted, Api, Web | Api, Web |
| Rating | 4.5/5 | 4.5/5 |
LangGraph key facts
- Vendor
- LangChain
- Pricing
- Open source — Free
- Free tier
- Yes
- Platforms
- Self Hosted, Api, Web
- Best for
- Developers, Ai Engineers, Enterprise
- Editor rating
- 4.5 / 5
- Founded
- 2024
- Headquarters
- San Francisco, CA, USA
Retell AI key facts
- Vendor
- Retell AI
- Pricing
- Usage-based — Free
- Free tier
- Yes
- Platforms
- Api, Web
- Best for
- Developers, Smb, Enterprise
- Editor rating
- 4.5 / 5
- Founded
- 2023
- Headquarters
- San Francisco, CA, USA
Frequently asked questions
Is LangGraph better than Retell AI?
Neither is universally better — LangGraph 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 LangGraph or Retell AI cheaper?
LangGraph is the more affordable of the two to get started, at free. LangGraph starts at free; Retell AI starts at free.
Can LangGraph replace Retell AI?
Yes for most teams — both are ai agents tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.