DeepSeek vs Letta
Which Agents AI tool is better in 2026?
DeepSeek
Open-weights frontier AI models with breakthrough efficiency.
Letta
Memory-first agents that learn and improve from experience with natural language.
Side-by-side
| DeepSeek | Letta | |
|---|---|---|
| Tagline | Open-weights frontier AI models with breakthrough efficiency. | Memory-first agents that learn and improve from experience with natural language. |
| Founded | 2023 | — |
| HQ | Hangzhou, CN | — |
| Employees | 51-200 | 1-10 |
| Total funding | Undisclosed | Undisclosed |
| Latest round | Private (High-Flyer) | — |
| Valuation | $10B | — |
| Cheapest paid plan | — | — |
| Free plan | ✓ DeepSeek-Chat (Web/App) | ✓ Letta Code |
| Free trial | ✗ | ✓ |
| Top tier price | — | — |
| Pricing summary | 3 published plans | 1 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for DeepSeek and Letta.
| Capability | DeepSeek | Letta |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 1 (Python) | 1 (Node.js) |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of DeepSeek
- Higher Neuron score (47 vs 19)
- Newer company (2023)
🔵 Strengths of Letta
- Offers a free trial
Which should you choose?
Choose DeepSeek if price matters most — it starts at Free, which is friendlier for teams watching burn. Both AI Agents tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Letta if you want the most established option — it has raised Undisclosed, suggesting more runway for enterprise features, support, and long-term roadmap. For mission-critical workflows or larger teams, that stability often outweighs a lower monthly price.
Frequently asked questions
DeepSeek vs Letta — which is better?
It depends on your priority. DeepSeek is the leaner option; Letta has broader feature depth. See the side-by-side table above.
Is DeepSeek cheaper than Letta?
Yes — DeepSeek's cheapest paid plan is Free, while Letta's is Free.
Do DeepSeek and Letta offer free plans?
DeepSeek: Yes, has a free plan. Letta: Yes, has a free plan.
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