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Lettav0.16.8Reported

Letta: what’s new in v0.16.8 and our verdict

Platform and open-source framework for stateful agents that keep and improve memory across sessions.

Official site

Release Ruler for Letta: marked at its Reported release date on the timeline of every AI model we track.

At a glance

Evidence
Reported
Released
May 14, 2026
Last verified
Oct 25, 2026
Pricing
Official page, dated
Best for
agent building

Evidence and ranking

Evidence behind this verdict

  1. Sources read3 cited sources, latest fetched Oct 25, 2026. (done)
  2. Facts re-checkedLast verified Oct 25, 2026. (done)
  3. Not run by us yetWe have not run it, so this is labelled Reported. (not done)

Where we rank it (editorial)

Listed here but not yet ranked. Ranks are editorial picks, not benchmark scores.

Pricing: Read from letta.com/pricing on 2026-10-25. (checked 2026-10-25)

Our verdict

Platform and open-source framework for stateful agents that keep and improve memory across sessions.

Good for

  • Agents that must remember across sessions

Skip if

  • You want a stateless simple chatbot

Status: Reported. This write-up is based on official release notes and docs; we have not run this release ourselves yet.

Best for

Key facts

Letta's pricing page lists a Free plan at $0, a $20 per month plan, and usage-based items such as $0.10 per active agent per month and $0.00015 per second of tool execution, plus a Teams plan at $20 per seat per month and custom Enterprise. The repository is Apache-2.0.

  • License: Apache-2.0 (per GitHub)
  • Platforms: Cloud platform, CLI and open-source server
  • Pricing model: Freemium
  • Free tier: Free: $0; includes limited agents and LLM requests with rotating free models
  • Paid plans: $20 per month plan; Teams $20 per seat per month; usage items such as $0.10 per active agent per month; Enterprise custom
  • GitHub: letta-ai/letta: 25,254 stars on 2026-10-25, last push 2026-10-18
  • Latest release we saw: v0.16.8, 2026-05-14
  • How to start: Sign up at letta.com or run the open-source server and create an agent from the docs.
  • v0.16.8 (2026-05-14): the newest release listed on the official page or repository when we read it on 2026-10-25.

How to set it up: Get started with Letta

These steps come from the vendor's own pages as read on 2026-10-25. We have not run Letta.

  1. Get access

    Sign up at letta.com or run the open-source server and create an agent from the docs.

  2. Check the limits and costs first

    Free: $0; includes limited agents and LLM requests with rotating free models. Paid: $20 per month plan; Teams $20 per seat per month; usage items such as $0.10 per active agent per month; Enterprise custom. Read from letta.com/pricing on 2026-10-25.

Pros and cons

Pros

  • Apache-2.0
  • Memory-first design

Cons

  • Credit-based usage can add up for long sessions

Alternatives and comparisons

  • Mem0: Open-source and hosted memory layer that lets agents remember users across sessions, with a free tier and published request quotas.
  • LangGraph: Low-level framework for building long-running, stateful agents as graphs.
  • CrewAI: Python framework for orchestrating role-playing, autonomous AI agents that work as a crew.
  • Langflow: MIT-licensed visual builder for AI agents and MCP servers with a very large GitHub following.

FAQ

What is Letta?

Letta's pricing page lists a Free plan at $0, a $20 per month plan, and usage-based items such as $0.10 per active agent per month and $0.00015 per second of tool execution, plus a Teams plan at $20 per seat per month and custom Enterprise. The repository is Apache-2.0.

Is Letta free?

Free: $0; includes limited agents and LLM requests with rotating free models. Paid: $20 per month plan; Teams $20 per seat per month; usage items such as $0.10 per active agent per month; Enterprise custom. Read from letta.com/pricing on 2026-10-25. Checked 2026-10-25; prices change, so confirm on the vendor's page.

What license is Letta under?

Its license: Apache-2.0 (per GitHub). Read from the project's own pages on 2026-10-25.

What we have not verified

  • Behavior in practice (we have not run this tool)

Sources

Last verified · Agentic Weekly

  • Langflow: MIT-licensed visual builder for AI agents and MCP servers with a very large GitHub following.
  • Botpress: Customer-support AI agent platform with a free plan and conversation-based paid plans.
  • Gumloop: Agent builder for teams; plans start at $37 per month with 20k included credits.

How to cite this page

Agentic Weekly, "Letta v0.16.8: what's new, verdict & setup", last updated 2026-10-25, https://theagenticweekly.com/tools/letta

Keep the Reported or Tested label when you quote a verdict. Plain-text version: https://theagenticweekly.com/tools/letta.md. More for AI assistants: /ai, /tools.json, /llms.txt.