The Engine For Human-Level Search

ZeroEntropy delivers state-of-the-art rerankers and embeddings for your retrieval stack—or use our end-to-end search engine, from raw documents to top results.

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# Create an API Key at https://dashboard.zeroentropy.dev

from zeroentropy import ZeroEntropy

zclient = ZeroEntropy()

response = zclient.models.rerank(
    model="zerank-1",
    query="Which reranker is the fastest?",
    documents=[
        "Jina rerank-m0 • 180 ms",
        "VoyageAI rerank-2 • 160 ms",
        "ZeroEntropy zerank-1 • 60 ms",
    ],
)
print(response.model_dump_json(indent=4))

Developers

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Documents

Tokens

Reranker

zerank-1 is our state-of-the-art open-weight reranker that outperforms models like Cohere's rerank 3.5 or Voyage rerank 2, and significantly boosts search accuracy in a single line of code.

Try it Now

Embedding

E2E Search

Reranker

zerank-1 is our state-of-the-art open-weight reranker that outperforms models like Cohere's rerank 3.5 or Voyage rerank 2, and significantly boosts search accuracy in a single line of code.

Try it Now

Embedding

E2E Search

Reranker

zerank-1 is our state-of-the-art open-weight reranker that outperforms models like Cohere's rerank 3.5 or Voyage rerank 2, and significantly boosts search accuracy in a single line of code.

Try it Now

Embedding

E2E Search

Ship Search That Actually Works for your Chatbot or Agent

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Rerank

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# Create an API Key at 
# https://dashboard.zeroentropy.dev

pip install zeroentropy
from zeroentropy import ZeroEntropy

# Initialize the ZeroEntropy client 
zclient = ZeroEntropy(api_key="YOUR_API_KEY")

response = zclient.models.rerank(
    model="zerank-1",
    query="What is 2+2?",
    documents=[
        "4",
        "The answer is definitely 1 million.",
    ],
)
print(response.model_dump_json(indent=4))

Rerank

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# Create an API Key at 
# https://dashboard.zeroentropy.dev

pip install zeroentropy
from zeroentropy import ZeroEntropy

# Initialize the ZeroEntropy client 
zclient = ZeroEntropy(api_key="YOUR_API_KEY")

response = zclient.models.rerank(
    model="zerank-1",
    query="What is 2+2?",
    documents=[
        "4",
        "The answer is definitely 1 million.",
    ],
)
print(response.model_dump_json(indent=4))

Rerank

Embed

Copy

Copied

# Create an API Key at 
# https://dashboard.zeroentropy.dev

pip install zeroentropy
from zeroentropy import ZeroEntropy

# Initialize the ZeroEntropy client 
zclient = ZeroEntropy(api_key="YOUR_API_KEY")

response = zclient.models.rerank(
    model="zerank-1",
    query="What is 2+2?",
    documents=[
        "4",
        "The answer is definitely 1 million.",
    ],
)
print(response.model_dump_json(indent=4))

Accuracy

Our models are open-weight, and state-of-the-art, you can read a full benchmark in our blog.

Latency

Cost

Accuracy

Our models are open-weight, and state-of-the-art, you can read a full benchmark in our blog.

Latency

Cost

Accuracy

Our models are open-weight, and state-of-the-art, you can read a full benchmark in our blog.

Latency

Cost

Seriously Secure

ZeroEntropy is built with enterprise-grade security at its core. From SOC 2 Type II compliance to HIPAA readiness, we protect your data with the highest standards — so you can focus on building, not worrying.

Use Cases

Customer Support

With every query and interaction, ZeroEntropy gets smarter. It learns the user’s style, adapts to their intentions, and evolves to deliver increasingly accurate and relevant results over time.

Legal

ZeroEntropy understands data holistically—knowing what’s in the corpus, what’s not, and the context behind queries. It aligns with users’ intentions, adapting to how users work and the questions they ask.

Healthcare

Voice AI

Put Your Retrieval in Autopilot Now

Work directly with the founders to shape the future of agentic retrieval.

Talk to a Founder

Common Questions

1. What makes ZeroEntropy different from traditional search engines?

2. Does ZeroEntropy handle PDF parsing and chunking?

3. How does ZeroEntropy process the data I send? Can you deploy on premise?

4. Is there a free trial?

5. What is the query latency?

6. What kind of support is offered?

7. Is it easy to integrate with my product?

1. What makes ZeroEntropy different from traditional search engines?

2. Does ZeroEntropy handle PDF parsing and chunking?

3. How does ZeroEntropy process the data I send? Can you deploy on premise?

4. Is there a free trial?

5. What is the query latency?

6. What kind of support is offered?

7. Is it easy to integrate with my product?

1. What makes ZeroEntropy different from traditional search engines?

2. Does ZeroEntropy handle PDF parsing and chunking?

3. How does ZeroEntropy process the data I send? Can you deploy on premise?

4. Is there a free trial?

5. What is the query latency?

6. What kind of support is offered?

7. Is it easy to integrate with my product?

Get started with

Our retrieval engine runs autonomously with the

accuracy of a human-curated system.

Our retrieval engine runs autonomously with the accuracy of a human-curated system.

Our retrieval engine runs autonomously with the

accuracy of a human-curated system.

Start Now

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