Marqo

https://www.marqo.ai

Marqo's open-source multimodal (text + image) vector search engine is deprecated and gets no further updates; the company now sells an AI-native ecommerce search and product discovery platform with personalization from clickstream and purchase data. The engine handled embedding generation internally behind a single API.

Deprecated. superseded by a successor product Source · Alternatives and migration notes →

Deprecated · Verified 2026-10-29 · fresh as of 2026-10-29 · 45 cited facts, 8 with a third-party source · 1 recorded change · Suggest a correction

At a glance

Tier
T2
Created
2022 third-party fix
Latest release
not applicable — not OSS fix
License
Apache-2.0 repo fix
Pricing
Pay-per-use vendor fix
Funding
$18M Series A · 2024-02 third-party fix
Freshness
2026-10-29 fix
Layer
model-infra repo fix
Licensing
open-source repo fix
Deployment locus
cloud repo fix
Platform vs product
product vendor fix
Accelerator
google-for-startups-2024 third-party fix

When to use

Optimised for: low-latency similarity search + scale

Anti-fit: not for relational / graph-heavy queries (vector-first by design)

Pros & cons

Pros

Tightly integrates embedding generation with vector search — no separate embedding pipeline needed.

Cons

Smaller community than mainstream vector DBs; less flexibility on embedding model choice.

Claims & capabilities

LangChain vector store integration.

Technical surface

API surface
REST, SDK: Python, JS
Backend storage
custom (Vespa-backed)
Deployment
Managed-only — commercial Marqo platform; the self-hosted OSS engine is deprecated
Embedding model
multiple supported
Multi-tenancy
namespace
MCP
no first-party MCP adapter published as of 2026-05; community connectors may exist.
A2A
no Google A2A (Agent2Agent) integration documented as of 2026-05.
OpenTelemetry
no first-party OpenTelemetry exporter documented; standard logs/metrics typically available.

Similar systems

Other vector-database infrastructure in the catalog, ranked by inbound references.

  • Qdrant T1

    Distribution-Based Score Fusion + RRF. Sparse vectors native; filtering via ANN graph modification.

  • Chroma T1

    Limited native hybrid (users build RRF custom). Fast Rust core (v2.5). Acquired by Replit (definitive agreement announced 2026-10-23); Chroma Cloud is winding down (writes disabled 2026-11-22, reads disabled 2026-12-22) while open-source ChromaDB continues under Apache-2.0.

  • pgvector T1

    Stores embeddings alongside relational + full-text data. HNSW + IVFFlat ANN indexes. Used as agent conversation memory via LangChain + MCP. Foundation of Supabase AI and many self-hosted RAG stacks.

  • Weaviate T1

    Hybrid Search 2.0 with learned ranking. BM25 + vector in unified index.

  • Milvus T1

    Multi-vector columns (10 simultaneous). Native hybrid search (v2.5). CAGRA + Vamana GPU/CPU (v2.6).

  • Pinecone T1

    Managed vector DB. Cascading sparse + dense + rerank pipeline; pinecone-rerank-v0 .

Sources (44 cited facts, 8 third-party)

Each fact links to the page it came from; the badge says who published it (how to read sources).

What changed

Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)

  1. 2026-10-26
    • Lifecycle first recorded as “superseded”
    • License “not applicable — not OSS” → “Apache-2.0” source
    • Deployment “Both” → “Managed-only — commercial Marqo platform; the self-hosted OSS engine is deprecated” source
    #258

Related systems

Referenced by (1)

  • OpenLLMetry (Traceloop) integrates with — OpenLLMetry's What's Supported page lists Marqo as instrumented out of the box. (verified 2026-10-29)