Snapshot
Continue to About ↓- What it does
- ZeroEntropy trains and serves small, specialized AI models for search and retrieval-augmented generation pipelines — chiefly the zerank-2 reranker family (zerank-2, zerank-2-small, zerank-2-nano) and the zembed-1 embedding model — plus custom fine-tuned models such as query rewriting and context compression.
More detail
- Models are reachable through a hosted API with Python and TypeScript SDKs, through partner providers, or self-hosted, and enterprise options cover on-prem/VPC deployment and SLAs.
- Buyers should note ZeroEntropy has been acquired by Notion, states a support end date of September 4, 2026 for its products, and has released its models open-source under Apache 2.0.
- Best for
- Engineering teams building or tuning a search or RAG pipeline who want a drop-in second-stage reranker and embedding model with low latency and low per-token cost.
More detail
- Also fits regulated teams (healthcare, legal, finance) that need SOC 2 Type II, HIPAA BAA-ready infrastructure or on-prem/VPC deployment.
- Pricing
- Usage-based, no disclosed subscription.
More detail
- Per the official pricing page: zerank-2 reranking $0.025 per million tokens (rate limit 2,500,000 UTF-8 bytes per minute)
- zembed-1 embeddings $0.050 per million tokens
- Search API pay-as-you-go adds OCR $1.75 per 1,000 pages, indexing $0.50 per MB, storage $0
- Main limitation
- Non-technical buyers who want a turnkey search application with an end-user interface — this is a developer tool requiring API integration or self-hosting.
More detail
- Teams that need an assured long-term managed vendor relationship should weigh the Notion acquisition and the stated September 4, 2026 support end date before committing.
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- Structured profile ↗
About
- ZeroEntropy trains and serves small, specialized AI models for search and retrieval-augmented generation pipelines — chiefly the zerank-2 reranker family (zerank-2, zerank-2-small, zerank-2-nano) and the zembed-1 embedding model — plus custom fine-tuned models such as query rewriting and context compression.
- Models are reachable through a hosted API with Python and TypeScript SDKs, through partner providers, or self-hosted, and enterprise options cover on-prem/VPC deployment and SLAs.
- Buyers should note ZeroEntropy has been acquired by Notion, states a support end date of September 4, 2026 for its products, and has released its models open-source under Apache 2.0.
What it helps with
- First-pass retrieval returns relevant documents ranked too low, hurting precision at the top of results
- Generalist LLM calls used for scoring or reranking add cost and latency in production pipelines
- Long-document pipelines waste tokens and context budget on irrelevant passages
- Out-of-the-box models underperform on domain-specific content and need tuning
- Messy source documents need OCR, indexing and storage before they can be searched
- Schema and data-residency controls needed for regulated workloads (healthcare, legal, finance)
Capabilities
A practical view of what is available and where limitations apply.
| Offering | Available | Detail |
|---|---|---|
| Reranking model (zerank-2 family) | Yes | Flagship multilingual, instruction-following cross-encoder; also offered as zerank-2-small and zerank-2-nano |
| Embedding model (zembed-1) | Yes | Flagship embedding model available via API; weights available upon request, and the maker states models were released open-source under Apache 2.0 |
| Custom and fine-tuned models | Yes | Maker lists query rewriting, context compression and fine-tuning as custom model offerings |
| Managed Search API (OCR, indexing, storage, querying) | Yes | Listed on the official pricing page with per-unit usage rates |
| Python and TypeScript SDKs | Yes | Both SDKs described on the official homepage; API keys issued via the dashboard |
| On-prem / VPC enterprise deployment | Yes | Contact-sales offering with dedicated capacity and a stated 99.99% SLA; pricing undisclosed |
| SOC 2 Type II and HIPAA BAA-ready compliance | Yes | Claims published on the official site; independently audit the reports before relying on them |
| Free tier for evaluation | Limited | Described in the official FAQ; exact allowances and limits not stated in the evidence |
| Transparent published per-unit pricing | Yes | Token rates and Search API unit rates published; enterprise prices are not disclosed |
| Assured long-term managed service | Limited | Maker states acquisition by Notion and product support until September 4, 2026; plan a self-hosted or migration path |
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- zeroentropy.dev
Technical profile details
Record ID
2cadbc6e-a3c2-44f2-8019-47c0d1c4ffb5Canonical URLhttps://profiles.scribble.network/listing/zeroentropy-2cadbc6e