Deliver maximum ROI through optimized specialist agents. Build agents for sales, customer success, marketing and HR, and run millions of daily tasks on one platform.
Best Letta Alternatives in 2026Free, Open-Source & Cheaper Options
Letta is a autonomous ai agents & workflows tool — Making machines that learn. Create stateful agents that remember everything, learn continuously, and improve themselves over time. Below are the highest-rated alternatives in the same space, ranked by community rating, with pricing transparency so you can find a cheaper or fully free swap.
Letta alternatives
Cognosys — AI tool at cognosys.ai.
babyagi — AI tool at babyagi.org.
Traceloop turns evals and monitors into a continuous feedback loop - so every release gets better
Every Agent Needs AgentOps.
Adept — AI tool at adept.ai.
Induced — AI tool at induced.ai.
The complete toolkit for AI engineers
Use our AI writer for content generation, research, speeches, rewriting, and more. HyperWrite uses the world's most powerful artificial intelligence technology to help you work faster and smarter in our AI document editor. Hundreds of AI tools to transform your writing, communication, and research.
Semantic Kernel — AI tool at semantic-kernel.org.
Dust — AI tool at dust.tt.
Air is the leader in Enterprise Readiness. Our mission is to establish readiness as a real-time condition that is continuously achieved.
Lindy is the AI employee that connects to all your tools, knows everything about your company, and does real work for the whole team.
Designing everyday AGI.
Ship quality agents at scale. Braintrust is the AI observability platform for tracing production, running evals, and catching regressions before they reach users.
The OpenPipe platform has migrated to Weights & Biases and CoreWeave. Browse migration details and the OpenPipe technical archive.
Nexos — AI tool at nexos.ai.
Devin — AI tool at devin.ai.