Memvid
https://github.com/memvid/memvid
Single-file memory layer (one .mv2 file). No DB, no server. Append-only sequence of immutable Smart Frames with timestamps + checksums. Native Rust core (rewritten from Python).
Active · Verified 2026-10-22 · fresh as of 2026-10-22 · 52 cited facts, 2 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Single-file append-only Smart Frames repo fix
- Tier
- T2
- Section
- Dedicated memory layers
- Latest release
- v2.0.140 (2026-05-27) repo fix
- License
- Apache-2.0 repo fix
- GitHub
- memvid/memvid — ~16.6k stars, last commit 2026-05 repo fix
- Pricing
- OSS (Apache-2.0); free — no commercial pricing found repo fix
- Funding
- searched not found fix
- Freshness
- 2026-10-22 fix
- Layer
- agent-infra repo fix
- Licensing
- open-source repo fix
- SDK languages
- python, rust, typescript repo fix
- Developer activity
- OpenRank 0.65 (12-mo avg 4.54) · 2 participants — 2026-09 third-party fix
Memory taxonomy
- storage
- file
- retrieval
- similarity
- persistence
- long-term
- update
- append-only
- unit
- chunk
- governance
- inspectable
- conflict
- append
When to use
Optimised for: simplicity / minimal config (one .mv2 file)
Anti-fit: not for multi-tenant / concurrent-write production workloads
Pros & cons
Pros
Single-file .mv2 store you can git commit — memory becomes a first-class artifact, not a database; sub-ms reads from a Rust core.
Cons
Single-file format means scale ceilings; non-standard format limits ecosystem interop.
Claims & capabilities
Sub-millisecond ops (0.025ms P50, 0.075ms P99). Reports +35% on LoCoMo. 10–100× speedup vs the prior Python implementation.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Self-hosted only (single .mv2 file; no cloud service)
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- native (first-party) — claude-brain MCP
- A2A
- not documented publicly
- OpenTelemetry
- not documented publicly
Alternatives to Memvid → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other dedicated memory layers in the catalog, ranked by inbound references.
- Mem0 T1
Universal memory layer for AI agents. Three concurrent stores (vector + graph + KV); LLM-extracted facts; concurrent retrieval via ThreadPoolExecutor.
- Zep & Graphiti T1
Bi-temporal knowledge graph (event time + ingestion time). Strong on chronological reasoning and contradiction tracking. Graphiti is the open-source core.
- Cognee T1
"Extract–Cognify–Load" pipeline that turns raw input into a typed, queryable knowledge graph for agent recall.
- Hindsight (Vectorize) T1
Standalone memory service from Vectorize. Open source. Biomimetic four-network design (World, Bank, Observation, Opinion). Ships an MCP memory server.
- Letta / MemGPT T1
Originated as MemGPT (UC Berkeley), where the model pages its own memory between context, recall and archival tiers. The product now centres on Letta Code, a stateful agent harness whose agents rewrite their own memory, skills and prompts over time.
- Memori T2
Structured, persistent memory layer for AI agents. Open source.
Sources (51 cited facts, 2 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Single-file append-only Smart Frames repo
- What it does & what's distinct Single-file memory layer (one .mv2 file). No DB, no server. Append-only sequence of immu… repo
- Claims / benefits Sub-millisecond ops (0.025ms P50, 0.075ms P99). Reports +35% on LoCoMo. 10–100× speedup … repo
- Modalities text vendor
- Created 2025-05 repo
- Latest release v2.0.140 (2026-05-27) repo
- License Apache-2.0 repo
- GitHub memvid/memvid — ~16.6k stars, last commit 2026-05 repo
- Pricing OSS (Apache-2.0); free — no commercial pricing found repo
- Compliance not applicable — not commercial repo
- Data handling not applicable — not commercial (all data stays in user's .mv2 file) repo
- Deployment Self-hosted only (single .mv2 file; no cloud service) vendor
- Founders / pedigree co-founders include Mohamed Omar (CEO) and one unnamed co-founder; team is anonymous on … third-party
- Memory volume / scale fits in single .mv2 file (no upper bound claimed) vendor
- Performance +35% ove LoCoMo repo
- Consistency strong repo
- Versioning immutable append-log repo
- Tombstoning append-only no delete repo
- Schema evolution schema locked repo
- Namespace primitives per-project repo
- Contradiction handling always append (no resolution) repo
- Forgetting policy none (permanent) repo
- MCP support native (first-party) — claude-brain MCP repo
- Webhooks / events no repo
- Import / export MP4 video bundle (proprietary container) repo
- Integration count 1 repo
- Orchestration agnostic repo
- Programmatic control full CRUD via Rust/Python lib (no remote API) repo
- Vendor benchmarks LoCoMo +35% (vendor); sub-millisecond ops 0.025ms P50 repo
- Pricing specifics OSS only (Apache-2.0); no commercial pricing repo
- Validated verticals consumer / individual, hobbyist agent developers repo
- Time to running <10min (pip install, single-file .mv2 format) repo
- Anti-fit not for multi-tenant / concurrent-write production workloads repo
- Optimised for simplicity / minimal config (one .mv2 file) repo
- Adjacent infrastructure fully self-contained — bring nothing repo
- Pros Single-file .mv2 store you can git commit — memory becomes a first-class artifact, not a… repo
- Cons Single-file format means scale ceilings; non-standard format limits ecosystem interop. repo
- Project & sources GitHub memvid/memvid docs claude-brain (Claude Code plugin) repo
- commit-trajectory [{"ym":"2025-05","cum":18},{"ym":"2025-06","cum":31},{"ym":"2025-07","cum":32},{"ym":"20… repo
- download-trajectory [{"ym":"2025-11","monthly":320,"cum":320},{"ym":"2025-12","monthly":1301,"cum":1621},{"y… registry
- cost-input-usd-per-mtok 0 repo
- cost-output-usd-per-mtok 0 repo
- cost-tier free repo
- cost-pricing-model free-tier repo
- cost-last-verified 2026-06-29 repo
- architecture-deployment-locus local repo
- licensing-bucket open-source repo
- positioning-platform-vs-product platform repo
- taxonomy-three-layer-rollup agent-infra repo
- developer-activity-opendigger {"activity":2.05,"as_of":"2026-09","openrank_12mo":4.54,"openrank_current":0.65,"partici… third-party
- sdk-languages python,rust,typescript repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
Related systems
Referenced by (1)
- claude-brain builds on · same team as — claude-brain packages memvid (same GitHub org memvid/) as a Claude Code plugin; cross-listings note flagged this pair.