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# voyage-code-2

### **Overview**

Optimized for code retrieval (17% better than alternatives) / Previous generation of code embeddings. See [blog post](https://blog.voyageai.com/2024/01/23/voyage-code-2-elevate-your-code-retrieval/) for details. Visit the [Voyage documentation](https://docs.voyageai.com/docs/embeddings) for an overview of all Voyage embedding models and rerankers.

Access to models is through the Voyage Python client. You must [register](https://dash.voyageai.com/) for Voyage API keys to access.

### **Using the model**

### **Installation**

```python
!pip install -qU voyageai pinecone
```

### **Create Index**

```python
from pinecone import Pinecone, ServerlessSpec

pc = Pinecone(api_key="API_KEY")

# Create Index
index_name = "voyage-code-2"

if not pc.has_index(index_name):
    pc.create_index(
        name=index_name,
        dimension=1536,
        metric="cosine",
        spec=ServerlessSpec(
            cloud="aws",
            region="us-east-1"
        )
    )

index = pc.Index(index_name)
```

### **Embed & Upsert**

```python
# Embed data
data = [
    {"id": "code1", "text": "def factorial(n):\n    if n == 0:\n        return 1\n    return n * factorial(n-1)"},
    {"id": "code2", "text": "Sort a list using the quicksort algorithm.\nSteps:\n1. Select a pivot.\n2. Partition the list into elements smaller and larger than the pivot.\n3. Recursively apply the process to partitions.\n4. Combine results."},
    {"id": "code3", "text": "def reverse_string(s):\n    return s[::-1]"},
    {"id": "code4", "text": "Determine if a number is prime - iterate from 2 to sqrt(num) to check divisibility."},
    {"id": "code5", "text": "def fibonacci(n):\n    if n <= 0:\n        return 0\n    elif n == 1:\n        return 1\n    return fibonacci(n-1) + fibonacci(n-2)"},
]

import voyageai

vo = voyageai.Client(api_key=VOYAGE_API_KEY)

model_id = "voyage-code-2"

def embed(docs: list[str], input_type: str) -> list[list[float]]:
    embeddings = vo.embed(
		    docs,
		    model=model_id,
		    input_type=input_type
		).embeddings
    return embeddings

# Use "document" input type for documents
embeddings = embed([d["text"] for d in data], input_type="document")

vectors = []
for d, e in zip(data, embeddings):
    vectors.append({
        "id": d['id'],
        "values": e,
        "metadata": {'text': d['text']}
    })

index.upsert(
    vectors=vectors,
    namespace="ns1"
)
```

### **Query**

```python
query = "Sort an array"

# Use "query" input type for queries
x = embed([query], input_type="query")

results = index.query(
    namespace="ns1",
    vector=x[0],
    top_k=3,
    include_values=False,
    include_metadata=True
)

print(results)
```

[Embedded content embed](https://www.pinecone.io/tools/index-creation/?indexName=voyage-code-2&metrics=cosine,dot product&dimensions=1536&cloud=aws&region=us-east-1)

Lorem Ipsum

## Related pages

- [Account management](./account-management-index.md)
- [Admin](./admin-2-index.md)
- [Admin](./admin-index.md)
- [APIs](./apis-index.md)
- [Architecture](./architecture-index.md)
- [Bring Your Own Cloud](./bring-your-own-cloud-index.md)
- [Build an assistant](./build-an-assistant-index.md)
- [Build an integration](./build-an-integration-index.md)
- [Changelog](./changelog-index.md)
- [Changelog](../changelog.md)

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