Letta vs Zhipu AI
Which Agents AI tool is better in 2026?
Letta
Memory-first agents that learn and improve from experience with natural language.
Zhipu AI
Chinese foundation model lab behind ChatGLM and GLM-4.
Side-by-side
| Letta | Zhipu AI | |
|---|---|---|
| Tagline | Memory-first agents that learn and improve from experience with natural language. | Chinese foundation model lab behind ChatGLM and GLM-4. |
| Founded | — | 2019 |
| HQ | — | Beijing, CN |
| Employees | 1-10 | 201-500 |
| Total funding | Undisclosed | $1.5B |
| Latest round | — | Strategic · Jul 2025 |
| Valuation | — | $6.6B |
| Cheapest paid plan | — | — |
| Free plan | ✓ Letta Code | ✓ Free Tier |
| Free trial | ✓ | ✓ |
| Top tier price | — | — |
| Pricing summary | 1 published plans | 1 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Letta and Zhipu AI.
| Capability | Letta | Zhipu AI |
|---|---|---|
| MCP support | ✗ | ✗ |
| Public API | ✗ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 1 (Node.js) | 2 (Python, Go) |
| Free plan | ✓ | ✓ |
| Free trial | ✓ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Letta
- Strong in AI Agents
🔵 Strengths of Zhipu AI
- Has raised more capital ($1.5B vs Undisclosed)
- Higher Neuron score (65 vs 19)
- Newer company (2019)
Which should you choose?
Choose Zhipu AI 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 Zhipu AI if you want the most established option — it has raised $1.5B, 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
Letta vs Zhipu AI — which is better?
It depends on your priority. Letta is the leaner option; Zhipu AI is cheaper to start. See the side-by-side table above.
Is Letta cheaper than Zhipu AI?
No — Zhipu AI's cheapest paid plan is Free, while Letta's is Free.
Do Letta and Zhipu AI offer free plans?
Letta: Yes, has a free plan. Zhipu AI: Yes, has a free plan.
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