Question 1

Is Modal better than Letta?

Accepted Answer

It depends on your use case. Modal is known for Serverless platform for running AI and ML workloads, while Letta Build stateful AI agents with long-term memory. See our full comparison above for a detailed breakdown.

Question 2

Is Modal free?

Accepted Answer

Modal pricing: Pay-per-use + $30 free/mo.

Question 3

Is Letta free?

Accepted Answer

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

Question 4

What are the main differences between Modal and Letta?

Accepted Answer

Modal and Letta differ in features, pricing, and platform support. Modal: Serverless platform for running AI and ML workloads. Letta: Build stateful AI agents with long-term memory. See the full side-by-side comparison above for details.

Feature	Modal	Letta
Category	LLM APIs & Inference	AI Agent Frameworks
Pricing	Pay-per-use + $30 free/mo	Free (open-source) + Cloud
GitHub Stars	—	✓ More stars 13k
Platforms	Web	Linux, macOS, Docker
Key Features	✓ Serverless GPU ✓ Container orchestration ✓ Cron jobs ✓ Web endpoints ✓ Fine-tuning	✓ Long-term memory ✓ Stateful agents ✓ Tool use ✓ Multi-model ✓ Self-editing memory
Pros	+ Serverless GPU with simple Python API + $30/mo free credits + Web endpoints and cron jobs + Fast cold starts + Great developer experience	+ Solves long-term memory problem + Self-editing memory + Stateful agents + Multi-model support + Active research backing
Cons	− Python-only − Vendor lock-in risk − Debugging can be tricky − Pricing opaque for large workloads	− Complex memory management − Performance overhead − Rebranding confusion − Still experimental
Tags	serverlessgpucloudinfrastructure	memorystatefulagentsopen-source

ModalvsLetta

Modal

Letta

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