Question 1

Is Letta better than Portkey?

Accepted Answer

It depends on your use case. Letta is known for Build stateful AI agents with long-term memory, while Portkey AI gateway for reliable and fast LLM applications. 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 Portkey free?

Accepted Answer

Portkey pricing: Free + Pro plans.

Question 4

What are the main differences between Letta and Portkey?

Accepted Answer

Letta and Portkey differ in features, pricing, and platform support. Letta: Build stateful AI agents with long-term memory. Portkey: AI gateway for reliable and fast LLM applications. See the full side-by-side comparison above for details.

Feature	Letta	Portkey
Category	AI Agent Frameworks	LLM APIs & Inference
Pricing	Free (open-source) + Cloud	Free + Pro plans
GitHub Stars	✓ More stars 13k	6k
Platforms	Linux, macOS, Docker	Web, Docker
Key Features	✓ Long-term memory ✓ Stateful agents ✓ Tool use ✓ Multi-model ✓ Self-editing memory	✓ AI gateway ✓ Fallbacks ✓ Load balancing ✓ Caching ✓ Observability
Pros	+ Solves long-term memory problem + Self-editing memory + Stateful agents + Multi-model support + Active research backing	+ Automatic fallbacks + Load balancing + Request caching + Observability built-in + Open-source gateway
Cons	− Complex memory management − Performance overhead − Rebranding confusion − Still experimental	− Added infrastructure layer − Learning curve − Some features need Pro − Latency overhead
Tags	memorystatefulagentsopen-source	gatewayreliabilityobservabilityapi

LettavsPortkey

Letta

Portkey

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