Question 1

Is Letta better than Bolt.new?

Accepted Answer

It depends on your use case. Letta is known for Build stateful AI agents with long-term memory, while Bolt.new AI-powered full-stack web app builder in the browser. See our full comparison above for a detailed breakdown.

Question 2

Is Letta free?

Accepted Answer

Letta pricing: Free (open-source) + Cloud.

Question 3

Is Bolt.new free?

Accepted Answer

Bolt.new pricing: Free + Pro $20/mo.

Question 4

What are the main differences between Letta and Bolt.new?

Accepted Answer

Letta and Bolt.new differ in features, pricing, and platform support. Letta: Build stateful AI agents with long-term memory. Bolt.new: AI-powered full-stack web app builder in the browser. See the full side-by-side comparison above for details.

Feature	Letta	Bolt.new
Category	AI Agent Frameworks	App Builders
Pricing	Free (open-source) + Cloud	Free + Pro $20/mo
GitHub Stars	✓ More stars 13k	—
Platforms	Linux, macOS, Docker	Web
Key Features	✓ Long-term memory ✓ Stateful agents ✓ Tool use ✓ Multi-model ✓ Self-editing memory	✓ Browser-based ✓ Full-stack apps ✓ Instant preview ✓ Deploy to production ✓ Multiple frameworks
Pros	+ Solves long-term memory problem + Self-editing memory + Stateful agents + Multi-model support + Active research backing	+ Full-stack app generation + In-browser development + Instant deployment + No local setup needed + Great for prototyping
Cons	− Complex memory management − Performance overhead − Rebranding confusion − Still experimental	− Limited to web technologies − Can struggle with complex apps − Token limits on free tier − Generated code may need cleanup
Tags	memorystatefulagentsopen-source	codingweb-appsno-setupbrowserdeploy

LettavsBolt.new

Letta

Bolt.new

Related Comparisons