# Evaluating Long-Term Memory for AI Agents: AML Cycle 2 Is Now Open

> Source: <https://twitter.com/AgentMemoryL/status/2101515447816663222>
> Published: 2026-09-21 06:24:34+00:00

Agent Memory Leaderboard on X: "Agent Memory Challenge 2026 Cycle 2 is now open.
Long-term memory is not just about storing more history. It is about retrieving the right evidence, recognizing what has changed, and avoiding stale context when an agent needs to act.
Three tracks: Textual · Cod… / X

Agent Memory Leaderboard on X: "Agent Memory Challenge 2026 Cycle 2 is now open.
Long-term memory is not just about storing more history. It is about retrieving the right evidence, recognizing what has changed, and avoiding stale context when an agent needs to act.
Three tracks: Textual · Coding · Multimodal
Open-source Methods · Commercial Products
Over USD 22,000 prize pool for eligible open-source teams.
A shared Add/Search interface. Standardized Answer/Eval. Public, comparable results.
Join: https://t.co/t2QajOb7Fe"

Agent Memory Challenge 2026 Cycle 2 is now open.
Long-term memory is not just about storing more history. It is about retrieving the right evidence, recognizing what has changed, and avoiding stale context when an agent needs to act.
Three tracks: Textual · Coding · Multimodal
Open-source Methods · Commercial Products
Over USD 22,000 prize pool for eligible open-source teams.
A shared Add/Search interface. Standardized Answer/Eval. Public, comparable results.
Join: agentmemoryleaderboard.ai/evaluation

Agent Memory Challenge 2026 Cycle 2 is now open.
Long-term memory is not just about storing more history. It is about retrieving the right evidence, recognizing what has changed, and avoiding stale context when an agent needs to act.
Three tracks: Textual · Coding · Multimodal
Open-source Methods · Commercial Products
Over USD 22,000 prize pool for eligible open-source teams.
A shared Add/Search interface. Standardized Answer/Eval. Public, comparable results.
Join: agentmemoryleaderboard.ai/evaluation

For the full technical overview of Cycle 2—including the shared Add/Search evaluation boundary, Textual, Coding, and Multimodal tracks, and the principles behind reproducible Agent Memory evaluation:

Agent Memory Challenge 2026 Cycle 2 opens September 20.
A shared evaluation for long-term Agent Memory across Textual, Coding, and Multimodal tracks—testing not just what agents store, but whether they retrieve current, useful evidence when it matters.