LettavsOpenAI Agents SDK
- ✦ Persistent Memory
- ✦ Stateful Agents
- ✦ Memory Editing
- ✦ Agent handoffs
- ✦ Guardrails
- ✦ Tool use
Real-World Scenarios: When to Choose Which
The question that matters: “In what situation will I regret choosing A over B after 3 months?”
Agent handoffs pass full conversation context between specialized billing, technical, and account agents without state loss - cutting customer wait times by 70%.
Tracing and debugging log every tool invocation in live agents, enabling exact replay of pricing errors and cutting incident diagnosis from 2 hours to 12 minutes.
Native async support extracts terms, flags risks, and routes documents in parallel - cutting a 6-hour sequential workflow down to 18 minutes at 94% lower compute cost.
Pricing Intelligence
Letta Plans
Free tier available
- • Self-hosted
- • All features
- • Commercial use
- • Managed hosting
- • Custom pricing
- • Enterprise features
OpenAI Agents SDK Plans
Free tier available
You get Open-source, Pay only for API calls. What's locked behind the paywall: per-token pricing, gpt-4o rates. Good enough for solo use and evaluation.
You get Per-token pricing, GPT-4o rates. Good enough for solo use and evaluation.
Feature Matrix
25 differences found across 34 standardized features
Pros & Cons Face-Off
Evaluative strengths and weaknesses — not feature lists
- +Best framework for persistent memory agents
- +Open source and transparent
- +Unique MemGPT architecture
- +Good for long-running agent tasks
- −More complex than simple agent frameworks
- −Requires understanding of memory architecture
- −Smaller community than LangChain
- +Official OpenAI framework
- +Production-ready with guardrails
- +Agent handoffs for complex flows
- +Built-in tracing & debugging
- +Access to all OpenAI tools
- −Locked into OpenAI models
- −Requires programming knowledge