agentmemory vs Mnemo

agentmemory and Mnemo are both agent frameworks tracked by AIDiveForge. Below is a side-by-side comparison of pricing, capabilities, platforms, and ownership — sourced from each tool's live website and verified before publishing.

agentmemory

Orbit is an open-source agent orchestration harness that wraps coding agent runs in bounded, dependency-ordered tasks, then gates task completion on real validation: tests, lint, and type checks must pass before an orbit closes. Every run produces structured JSON artifacts — agent output, rubric scores, accept/iterate/stop recommendations, and a human-readable progress log — so you have a trail to review, not just a diff to guess at. It runs against Claude, Codex, Cursor, or any agent that speaks JSON over CLI. The demo runs without an API key, which matters when you're evaluating whether it even fits your workflow. Where it strains: teams who need a web UI, multi-agent parallelism, or cloud-managed infrastructure will hit the limits of an intentionally small CLI harness fast.

Mnemo

Orbit wraps each agent run in a bounded loop: it selects a dependency-ordered task from your backlog, hands it to whichever coding agent you point at it, then runs tests, lint, and type checks before the task is allowed to close. Every run leaves structured JSON artifacts — what the agent returned, how the output scored against a rubric, and a human-readable recommendation to accept, iterate, or stop. The agent-neutral contract means you can swap Claude for Codex behind the same harness and compare artifacts instead of gut feelings. Where Orbit hits its ceiling: it is a harness, not a planner, so teams that need autonomous task decomposition or cross-repo coordination will be adding that layer themselves.

Attribute	agentmemory	Mnemo
Pricing	Free	Free
Free trial	No	No
Open source	Yes	Yes
Has API	No	No
Self-hosted option	Yes	Yes
Platforms	Linux, macOS, Windows (Python 3.6+)	Cross-platform (Python)
Pros	Validation gates tied to your actual test suite and linter — not a model's self-report — which means a task cannot be marked complete when the code still breaks your build. Structured JSON artifacts on every run (agent output, rubric scores, review recommendation, progress log), so you have inspectable evidence for human review instead of reconstructing what the agent did from a diff. Agent-neutral adapter contract, so you can run the same task through Claude and Codex and compare the resulting evaluation files directly — replacing 'I think this model is better' with a logged side-by-side. Dependency-ordered backlog execution that advances one verified task at a time, which means you avoid the common failure mode where an agent skips ahead and builds on work that never actually passed. MIT licensed and self-hostable with no API key required to run the replay demo, so you can validate the harness fits your workflow before wiring it to any external service.	Validation gates run tests, lint, and type checks before a task closes, so broken output cannot silently pass — without this, an agent marks work complete on a diff that fails your own test suite. Four structured artifacts per run (agent result, rubric evaluation, review recommendation, progress log), which means an audit of what the agent proved is always available without reconstructing the run from memory or logs. Deterministic replay with no API key required, so you can compare two models against the same task by comparing their JSON artifacts — replacing 'it worked in my demo' with a side-by-side diff. Agent-neutral JSON contract, so switching from one coding agent to another is an adapter swap, not a workflow rewrite — teams that need to evaluate models against real tasks do not have to rebuild the harness each time. Dependency-aware backlog selection keeps each run focused on one task, which means the agent cannot wander into adjacent work and produce a diff that touches three things you did not ask for.
Cons	Orbit has no web UI and no managed control plane — non-engineers who need to review agent progress or trigger runs without touching a terminal cannot use it without a wrapper built on top, and building that wrapper puts the maintenance burden on your team. Task execution is sequential and single-agent per orbit: one task, one agent, one validation loop at a time. Teams that need agents running tasks in parallel — or coordinating across multiple agents on a shared codebase — hit this architectural ceiling immediately and move to a heavier orchestration framework. The adapter layer requires each coding agent to speak JSON over a CLI interface; agents without a scriptable CLI or JSON output format require a custom adapter, which the docs flag as a contribution opportunity but which in practice means engineering time before the harness is usable with those agents. There is no cloud execution or hosted option — everything runs locally or on infrastructure you manage. Teams under compliance requirements that mandate audit trails stored in a vendor-controlled environment, rather than self-managed storage, will need a different tool.	Orbit expects a pre-structured, dependency-ordered backlog — it does not decompose goals into tasks. Teams whose actual problem is 'figure out what to build next' hit this wall immediately and have to build or buy a planning layer before Orbit adds any value. There is no hosted option and no API surface, which means every team that wants Orbit in a CI pipeline or a shared environment is running their own infrastructure. For a solo project this is fine; for an organization that wants a shared validation service across multiple repos, the ops burden lands entirely on the team. The harness is intentionally small and community-contributed — the docs explicitly describe it as such. Teams that need adapters for agents not already supported write the adapter themselves, and teams that hit edge cases in the validation loop are filing issues against a project with no commercial support tier, which is the condition under which teams with production SLAs move to a vendor-backed tool instead.

Bottom line

agentmemory and Mnemo are closely matched on pricing model, openness, and API availability — pick by feature set and platform support in the table above.

Frequently asked questions

What is the difference between agentmemory and Mnemo?

agentmemory is Free and open source, while Mnemo is Free and open source. Compare pricing, free trial, API, platforms, and pros/cons in the table above on AIDiveForge.

Is agentmemory better than Mnemo?

It depends on your workflow. Use the side-by-side attributes (pricing, open source, API, self-hosted, platforms) to decide. AIDiveForge does not rank a universal winner — we publish verified facts so you can choose.