tokens&
For enterprises
Submit
Sign in
tokens&

Build better AI stacks, claim useful opportunities, and give AI infrastructure companies a source-labeled adoption readout they can trust.

For buildersFor enterprises

Product

  • For builders
  • Category rankings
  • Startup credits and perks
  • Agent Skills
  • Platform
  • Submit project, tool, product, or perk

Enterprise

  • Start free company workspace

Community

  • Community
  • Newsletter
  • Events
Xin

© 2026 tokensand, LLC. All rights reserved.

  • Terms
  • Privacy
  • Security
  • Data Processing
  • Status
  1. Home
  2. Alternatives
  3. Alternatives to Letta
Letta

Best Alternatives to Letta

AI Agents · 8 alternatives ranked of 78 in the category

Looking for alternatives to Letta? These are the ai agents tools that score highest on adoption, reviews, benchmarks, and public code, with what separates each one from Letta.

Actian logo
Actian

AI Agents· actian.com

Custom

Portable vector database for edge AI

Why recommended

Based on popular builder stacks until you save tools or publish a project.

API available

How each alternative differs from Letta

Ranked by adoption, review, benchmark, and repository signals. Each note below is drawn from the two products’ own catalog records, so a product with nothing to separate it from Letta carries no note.

  1. 1

    Actian

    Actian is not listed as open source, while Letta is, is custom-priced against Letta's freemium model, and shows 28 recorded adoptions against Letta's 0.

  2. 2

    Replay.io

    Replay.io is not listed as open source, while Letta is, is custom-priced against Letta's freemium model, and shows 25 recorded adoptions against Letta's 0.

  3. 3

    Guild.ai

    Guild.ai is not listed as open source, while Letta is, is custom-priced against Letta's freemium model, and shows 22 recorded adoptions against Letta's 0.

  4. 4

    CrewAI

    CrewAI is open source against Letta's freemium model.

  5. 5

    ComfyUI

    ComfyUI is open source against Letta's freemium model and carries 119k GitHub stars to Letta's 24k.

Replay.io logo
Replay.io

AI Agents· replay.io

Custom

Drop-in QA for web apps

Why recommended

Based on popular builder stacks until you save tools or publish a project.

API available
Guild.ai logo
Guild.ai

AI Agents· guild.ai

Custom

The control plane for AI agents

Why recommended

Based on popular builder stacks until you save tools or publish a project.

API available
CrewAI logo
CrewAI

AI Agents· crewai.com

Open source

Open-source framework for multi-agent workflows and role-based agents.

Why recommended

Based on popular builder stacks until you save tools or publish a project.

Open source
ComfyUI logo
ComfyUI

AI Agents· comfy.org

Open source

The modular AI image and workflow backend for builders shipping node-based generation pipelines, custom diffusion apps, and visual automation.

Why recommended

Based on popular builder stacks until you save tools or publish a project.

119,089
Open source
Gemini CLI logo
Gemini CLI

AI Agents· github.com

Open source

Open-source terminal AI agent that brings Gemini-assisted coding and automation into developer shells.

Why recommended

Based on popular builder stacks until you save tools or publish a project.

105,670
Open source
Hermes Agent logo
Hermes Agent

AI Agents· hermes-agent.nousresearch.com

Open source

Open-source autonomous agent from Nous Research for coding and research workflows with provider integrations.

Why recommended

Based on popular builder stacks until you save tools or publish a project.

203,205
Open source
Open WebUI logo
Open WebUI

AI Agents· openwebui.com

Open source

Open-source self-hosted AI interface and app platform for model routing, local or hosted LLM workflows, and OpenRouter-compatible chat apps.

Why recommended

Based on popular builder stacks until you save tools or publish a project.

143,623
Open source
  • 6

    Gemini CLI

    Gemini CLI is open source against Letta's freemium model and carries 106k GitHub stars to Letta's 24k.

  • 7

    Hermes Agent

    Hermes Agent is open source against Letta's freemium model and carries 203k GitHub stars to Letta's 24k.

  • 8

    Open WebUI

    Open WebUI is open source against Letta's freemium model and carries 144k GitHub stars to Letta's 24k.