# Perplexity with Haystack

## Overview

The `perplexity-haystack` package provides Haystack components for Perplexity's Agent API, Embeddings API, and grounded Search API, so you can build retrieval-augmented and agentic pipelines that combine chat, embeddings, and live web search.

:::callout{intent="info"}
**Haystack** is an open-source Python framework by [deepset](https://deepset.ai) for building production-ready LLM applications, including RAG pipelines and agentic workflows. Learn more at [haystack.deepset.ai](https://haystack.deepset.ai).
:::

The integration includes:

- **PerplexityChatGenerator** — Chat generation through the [Agent API](/guides/agent-api-quickstart).
- **PerplexityTextEmbedder** and **PerplexityDocumentEmbedder** — Embeddings through the [Embeddings API](/guides/embeddings-api-quickstart).
- **PerplexityWebSearch** — Ranked, grounded web results through the [Search API](/guides/agent-api-search-quickstart).

## Installation

::::tabs
:::tab{title="pip"}
```bash theme={null}
pip install perplexity-haystack
```
:::

:::tab{title="uv"}
```bash theme={null}
uv add perplexity-haystack
```
:::
::::

## API Key Setup

Set your Perplexity API key as an environment variable:

```python theme={null}
import os

os.environ["PERPLEXITY_API_KEY"] = "your_api_key_here"
```

:::card{title="Get API Key" href="https://console.perplexity.ai/project/keys" icon="key"}
Generate your API key from the Perplexity dashboard.
:::

## Quick Start: Chat (Agent API)

`PerplexityChatGenerator` is powered by the Perplexity Agent API. Set the model explicitly so your integration does not depend on the package default.

```python theme={null}
import os

from haystack.dataclasses import ChatMessage
from haystack_integrations.components.generators.perplexity import PerplexityChatGenerator

os.environ["PERPLEXITY_API_KEY"] = "your_api_key_here"

client = PerplexityChatGenerator(model="openai/gpt-5.6-terra")
response = client.run(
    messages=[ChatMessage.from_user("What are Agentic Pipelines? Be brief.")]
)

print(response["replies"])
```

### Selecting a Model

You can pick any of the supported Agent API models via the `model` parameter:

```python theme={null}
client = PerplexityChatGenerator(model="anthropic/claude-sonnet-4-6")
```

Supported models include `openai/gpt-5.6-terra`, `openai/gpt-5.5`, `anthropic/claude-sonnet-4-6`, `xai/grok-4.5`, and `google/gemini-3-flash-preview`. See the [Agent API models page](/guides/agent-api-models) for the full list.

## Quick Start: Embeddings

Embed a single query with `PerplexityTextEmbedder`:

```python theme={null}
import os

from haystack_integrations.components.embedders.perplexity import PerplexityTextEmbedder

os.environ["PERPLEXITY_API_KEY"] = "your_api_key_here"

embedder = PerplexityTextEmbedder()
response = embedder.run(text="What is Haystack by deepset?")

print(response["embedding"])
```

Embed a list of documents with `PerplexityDocumentEmbedder`:

```python theme={null}
from haystack import Document
from haystack_integrations.components.embedders.perplexity import PerplexityDocumentEmbedder

docs = [Document(content="What is Haystack by deepset?")]
result = PerplexityDocumentEmbedder().run(documents=docs)

print(result["documents"][0].embedding)
```

Both embedders default to `pplx-embed-v1-0.6b`. The larger `pplx-embed-v1-4b` model is also available — set it via the `model` parameter.

## Quick Start: Web Search (Search API)

Use `PerplexityWebSearch` to get ranked, grounded web results inside a Haystack pipeline:

```python theme={null}
import os

from haystack.utils import Secret
from haystack_integrations.components.websearch.perplexity import PerplexityWebSearch

os.environ["PERPLEXITY_API_KEY"] = "your_api_key_here"

websearch = PerplexityWebSearch(
    api_key=Secret.from_env_var("PERPLEXITY_API_KEY"),
    top_k=5,
)
result = websearch.run(query="What is Haystack by deepset?")

documents = result["documents"]
links = result["links"]

print(documents)
print(links)
```

## Links & Resources

::::card-grid
:::card{title="Haystack Integrations" href="https://haystack.deepset.ai/integrations/perplexity" icon="book"}
Catalog entry on haystack.deepset.ai
:::

:::card{title="Source Code" href="https://github.com/deepset-ai/haystack-core-integrations/tree/main/integrations/perplexity" icon="github"}
perplexity-haystack on GitHub
:::

:::card{title="PyPI Package" href="https://pypi.org/project/perplexity-haystack" icon="brand-python"}
View on PyPI
:::

:::card{title="Haystack Docs" href="https://docs.haystack.deepset.ai" icon="book-open"}
Full Haystack documentation
:::
::::

## Support

Need help with the integration?

- Check the [Haystack documentation](https://docs.haystack.deepset.ai)
- Open an issue at [haystack-core-integrations](https://github.com/deepset-ai/haystack-core-integrations/issues)
- Review our [FAQ](/guides/resources-faq)

## Related pages

- [Perplexity with AG2](./resources-getting-started-integrations-ag2.md)
- [Perplexity with Agno](./resources-getting-started-integrations-agno.md)
- [Perplexity MCP Server for Google Antigravity](./resources-getting-started-integrations-antigravity.md)
- [Perplexity with AnythingLLM](./resources-getting-started-integrations-anythingllm.md)
- [Perplexity with CAMEL-AI](./resources-getting-started-integrations-camel.md)
- [Perplexity with Claude Code](./resources-getting-started-integrations-claude-code.md)
- [Perplexity with Composio](./resources-getting-started-integrations-composio.md)
- [Perplexity with Cursor](./resources-getting-started-integrations-cursor.md)
- [Perplexity web search in Hermes](./resources-getting-started-integrations-hermes.md)
- [Perplexity with LangChain](./resources-getting-started-integrations-langchain.md)

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