Anthropic vs Letta
Which Foundation Models AI tool is better in 2026?
Anthropic
AI safety lab building Claude — a helpful, harmless, honest AI assistant.
Letta
Memory-first agents that learn and improve from experience with natural language.
Side-by-side
| Anthropic | Letta | |
|---|---|---|
| Tagline | AI safety lab building Claude — a helpful, harmless, honest AI assistant. | Memory-first agents that learn and improve from experience with natural language. |
| Founded | 2021 | — |
| HQ | San Francisco, US | — |
| Employees | 501-1000 | 1-10 |
| Total funding | $67.6B | Undisclosed |
| Latest round | series-g · Feb 2026 | — |
| Valuation | $380B | — |
| Cheapest paid plan | Pro · $20/mo | — |
| Free plan | ✓ Free | ✓ Letta Code |
| Free trial | ✗ | ✓ |
| Top tier price | Team · $30/mo | — |
| Pricing summary | 4 published plans | 1 published plans |
| Categories |
Capability matrix
Developer-facing capabilities and access signals for Anthropic and Letta.
| Capability | Anthropic | Letta |
|---|---|---|
| MCP support | ✓ | ✗ |
| Public API | ✓ | ✗ |
| Webhooks | ✗ | ✗ |
| OAuth 2.0 | ✗ | ✗ |
| SDK languages | 5 (python, typescript, java, kotlin…) | 1 (Node.js) |
| Free plan | ✓ | ✓ |
| Free trial | ✗ | ✓ |
| Verified | ✗ | ✗ |
| Active deal | ✗ | ✗ |
🟢 Strengths of Anthropic
- Has raised more capital ($67.6B vs Undisclosed)
- Higher Neuron score (82 vs 19)
- Lower starting price ($20/mo)
- Newer company (2021)
🔵 Strengths of Letta
- Offers a free trial
Which should you choose?
Choose Anthropic if price matters most — it starts at Free · From $20/mo, which is friendlier for teams watching burn. Both Foundation Models tools ship core features, so the cost delta often decides it for small teams and solo operators.
Choose Anthropic if you want the most established option — it has raised $67.6B, 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
Anthropic vs Letta — which is better?
It depends on your priority. Anthropic has raised more capital and is the more established option; Letta has broader feature depth. See the side-by-side table above.
Is Anthropic cheaper than Letta?
Yes — Anthropic's cheapest paid plan is Pro · $20/mo, while Letta's is Free.
Do Anthropic and Letta offer free plans?
Anthropic: Yes, has a free plan. Letta: Yes, has a free plan.
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