LangGraph vs Retell AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
LangGraph is the stronger AI pick in AI Agents: it has a visibility score of 24.4 versus 2 for Retell AI, and ranks ahead in 100% of the answers that name both.
Choose LangGraph if…
- You want the brand AI engines rank higher (24.4 vs 2)
- You need ISO 27001:2022 coverage
- Production standard for stateful, multi-agent workflows
- Strong engineering control for complex, cyclical agent logic
Choose Retell AI if…
- You need ISO 27001 coverage
- Highly rated by developers and SMBs
- One of the highest customer star ratings
AI visibility side by side
Latest weekly run · Nov 3
| Metric | LangGraph | Retell AI |
|---|---|---|
| Visibility score | 24.4% | 2% |
| Change vs last week | New | New |
| Rank in AI Agents | #4 | #42 |
| Share of voice | 5.3% | 0.5% |
| Mentions this run | 33 | 3 |
| Positive in AI answers | 44% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
LangGraph 0pp · Retell AI 0pp over 0 weekly runs.
Engine by engine
LangGraph leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | LangGraph | Retell AI |
|---|---|---|---|
| What are the best AI Agents tools in 2026? | Perplexity | #3 | #13 |
Features, pricing & fit
| Dimension | LangGraph | Retell AI |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Contact sales |
| Free plan | — | Yes |
| Deployment | SaaS in US and EU regions, plus self-hosted and hybrid options available on Enterprise only. | Cloud platform, with enterprise on-premises deployment available |
| Compliance | SOC 2 Type II, ISO 27001:2022, GDPR, HIPAA | HIPAA, SOC 2 Type II, GDPR, ISO 27001 |
| Support | — | Community and email support, 24/7 omnichannel support with dedicated portal (Enterprise), Dedicated implementation support (Enterprise), Named account manager (Enterprise) |
| Founded | — | 2023 |
| Headquarters | San Francisco | Redwood City, California |
| Employees | — | 51–200 |
| Funding | Series B | Seed · $5M raised |
| Best for | Teams building long-running, stateful AI agents. | Businesses that run high call volumes in healthcare, insurance, financial services, logistics and similar fields, and teams that want to build and change voice agents themselves. |
Plans side by side
LangGraph
Pricing not available.
Retell AI
Pros and cons
Themes from the AI answers that mention each brand
LangGraph
- Production standard for stateful, multi-agent workflows
- Strong engineering control for complex, cyclical agent logic
- Widely adopted open-source developer framework
- Best choice for autonomous AI agents
- Heavy developer framework that requires coding effort
Retell AI
- Highly rated by developers and SMBs
- One of the highest customer star ratings
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “LangGraph vs Retell AI”, https://slateindex.ai/compare/langgraph-vs-retell-ai, data of Nov 3, 2026. Licence: CC BY 4.0.