soniox 2.2.0

The official Python SDK for the Soniox API (STT, REST)

Soniox Python SDK

The SDK exposes two clients: SonioxClient (sync) and AsyncSonioxClient. Client can hit every Soniox REST endpoint or open a real-time websocket session, so you can focus on building features instead of dealing with boilerplate. Auth, file uploads, transcription polling, webhook helpers, and real-time stream helpers all live in one typed package.

Install

pip install soniox
# or if using uv
uv add soniox
export SONIOX_API_KEY=<your-key>

Get your API key from the Soniox Console and inject it once per shell session. Both clients read SONIOX_API_KEY by default, but you can override it per-client if needed.

Quick run (rest + real-time)

1. REST transcription: copy this snippet or run examples/soniox_client/api_example.py.

from soniox import SonioxClient

client = SonioxClient()
transcription = client.stt.transcribe(
    audio_url="https://soniox.com/media/examples/coffee_shop.mp3",
    client_reference_id="docs-quick-start",
)
client.stt.wait(transcription.id, timeout_sec=60)
print(client.stt.get_transcript(transcription.id).text[:200])

2. Real-time streaming: the real-time helpers mirror the sync rest sample—open client.realtime.stt.connect, call session.send_byte_chunk or session.send_bytes, then iterate session.receive_events() to render tokens. example:

from soniox import SonioxClient
from soniox.types import RealtimeSTTConfig, Token
from soniox.utils import render_tokens, throttle_audio, start_audio_thread

DEMO_FILE = "path_to_your_audio_file"

client = SonioxClient()
config = RealtimeSTTConfig(model="stt-rt-v4", audio_format="mp3")
final_tokens: list[Token] = []
non_final_tokens: list[Token] = []

def realtime():
    with client.realtime.stt.connect(config=config) as session:
        start_audio_thread(session, throttle_audio(DEMO_FILE, delay_seconds=0.1))
        for event in session.receive_events():
            for token in event.tokens:
                if token.is_final:
                    final_tokens.append(token)
                else:
                    non_final_tokens.append(token)
            print(render_tokens(final_tokens, non_final_tokens))
            non_final_tokens.clear()

realtime()

see examples/soniox_client/realtime_example.py for the full flow.

Repository layout

• src/soniox/ – sdk code (clients, http namespaces, real-time/session helpers, types, utils).
• examples/soniox_client & examples/async_soniox_client – runnable rest + real-time flows for sync and async.
• docs/ – markdown outputs (e.g., docs/python-sdk.md) that come from pydoc-markdown.
• assets/ – sample audio referenced by the examples.
• tests/ – pytest narratives that describe the public behavior.

Development

uv install --with dev

This pulls in ruff, pyright, pytest, etc., so you can lint, type-check, test, and regenerate docs locally.

Docs

source .venv/bin/activate
python3 scripts/generate_docs.py

Docs are output to /docs directory.

Resources

• soniox.com/docs – official Soniox documentation.
• GitHub repo – source, examples, and scripts.
• PyPI
• Support: [e-mail].