Wizper

Wizper is a real-time Whisper v3 variant hosted by Fal.ai. Provides accurate STT with on-the-fly translation to 99+ languages.

Vision Agents uses Stream Video for real-time WebRTC transport by default. External WebRTC transports are supported as well. Most AI providers offer free tiers to get started.

Installation

uv add "vision-agents[wizper]"

Quick Start

from vision_agents.core import Agent, User
from vision_agents.plugins import wizper, gemini, elevenlabs, getstream

agent = Agent(
    edge=getstream.Edge(),
    agent_user=User(name="Assistant", id="agent"),
    instructions="You are a helpful assistant.",
    llm=gemini.LLM("gemini-3-flash-preview"),
    stt=wizper.STT(),
    tts=elevenlabs.TTS(),
)

Set FAL_KEY in your environment for Fal.ai authentication.

Parameters

Name	Type	Default	Description
task	str	"transcribe"	Task ("transcribe" or "translate")
target_language	str	None	ISO-639-1 code for translation (e.g., "es", "fr")
sample_rate	int	48000	Audio sample rate in Hz

Translation

Translate speech to any supported language:

# Translate all speech to Spanish
stt = wizper.STT(target_language="es")

Next Steps

Build a Voice Agent

Get started with voice

Build a Video Agent

Add video processing