Letta vs Retell AI
as AI assistants see them, week of 2026-09-14
Head to head
| metric | Letta | Retell AI |
|---|---|---|
| score | 3 | 4 |
| questions won | 3 | 2 |
By assistant
Letta
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 0 | 0% of answers | |
| Claude | 8 | 15% of answers | #7.3 |
| Gemini | 3 | 8% of answers | #11.0 |
| Perplexity | 0 | 0% of answers |
Retell AI
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 5 | 5% of answers | #1.0 |
| Claude | 5 | 10% of answers | #7.5 |
| Gemini | 7 | 8% of answers | #2.0 |
| Perplexity | 3 | 5% of answers | #6.0 |
Where they differ
Only Letta gets named for
- What's the best way to give an AI agent memory across sessions?
- What's the best self-hosted platform for running AI agents privately?
- What are the best open-source AI agent frameworks?
Only Retell AI gets named for
- What's the best platform to build a voice AI agent?
- Which AI agent platform is best for a non-technical founder?
More comparisons
- Letta vs Taskade Genesis
- Letta vs xpander.ai
- Bland vs Letta
- Botpress vs Letta
- Coze vs Letta
- Bland vs Retell AI
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full AI agent builders leaderboard