Environment:Elevenlabs Elevenlabs python Python Httpx

Knowledge Sources	elevenlabs-python httpx documentation
Domains	Infrastructure, API_Client
Last Updated	2026-02-15 12:00 GMT

Overview

Python 3.8+ environment with httpx, pydantic, and requests for the ElevenLabs REST API client.

Description

This environment provides the core runtime for all synchronous HTTP-based ElevenLabs SDK operations. It is built on httpx for HTTP transport, pydantic for data validation and serialization, and typing_extensions for backporting newer type hints to Python 3.8. The client wrapper uses httpx internally for all REST API calls including text-to-speech, voice management, speech-to-text (batch), and voice cloning endpoints.

Usage

Use this environment for any ElevenLabs SDK operation that communicates over HTTP REST. This includes client initialization via `ElevenLabs()`, voice search, text-to-speech conversion, batch speech-to-text, and instant voice cloning. It is the mandatory prerequisite for the sync and async HTTP client infrastructure.

System Requirements

Category	Requirement	Notes
OS	Any (Windows, macOS, Linux)	Cross-platform support declared in pyproject.toml
Python	>= 3.8	Classifiers list 3.8 through 3.12
Network	Internet access to api.elevenlabs.io	Production, US, EU, and India region endpoints available

Dependencies

Python Packages

`httpx` >= 0.21.2
`pydantic` >= 1.9.2
`pydantic-core` >= 2.18.2
`requests` >= 2.20
`typing_extensions` >= 4.0.0

Credentials

The following environment variables must be set:

`ELEVENLABS_API_KEY`: ElevenLabs API key. The client reads this via `os.getenv("ELEVENLABS_API_KEY")` if no `api_key` parameter is passed to the constructor.

Quick Install

# Install the ElevenLabs SDK (includes all HTTP dependencies)
pip install elevenlabs

# Or install core dependencies manually
pip install httpx>=0.21.2 pydantic>=1.9.2 pydantic-core>=2.18.2 requests>=2.20 typing_extensions>=4.0.0

Code Evidence

API key auto-detection from environment in `client.py:50`:

api_key: typing.Optional[str] = os.getenv("ELEVENLABS_API_KEY"),

Default timeout configuration in `client.py:51`:

timeout: typing.Optional[float] = 240,

Timeout defaulting logic in `base_client.py:91-92`:

_defaulted_timeout = (
    timeout if timeout is not None else 240 if httpx_client is None else httpx_client.timeout.read
)

Region endpoint definitions in `environment.py:7-10`:

class ElevenLabsEnvironment(enum.Enum):
    PRODUCTION = "https://api.elevenlabs.io"
    PRODUCTION_US = "https://api.us.elevenlabs.io"
    PRODUCTION_EU = "https://api.eu.residency.elevenlabs.io"
    PRODUCTION_INDIA = "https://api.in.residency.elevenlabs.io"

Common Errors

Error Message	Cause	Solution
`ELEVENLABS_API_KEY` not set and no `api_key` passed	Missing API credentials	Set `ELEVENLABS_API_KEY` environment variable or pass `api_key=` to `ElevenLabs()`
`httpx.TimeoutException`	Request exceeded 240s default timeout	Increase timeout: `ElevenLabs(timeout=600)` or pass custom `httpx_client`
`httpx.ConnectError`	Cannot reach api.elevenlabs.io	Check network connectivity and firewall rules

Compatibility Notes

Cross-platform: Works on Windows, macOS, and Linux per pyproject.toml classifiers.
Python 3.8+: Uses `typing_extensions` for backporting features to Python 3.8.
Custom httpx client: Users can pass a pre-configured `httpx.Client` or `httpx.AsyncClient` for custom proxy, SSL, or timeout settings.
Regional endpoints: Supports Production (global), US, EU, and India residency endpoints via `ElevenLabsEnvironment`.

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