Select the speech model with Best and Nano | AssemblyAI

We use a combination of models to produce your results. You can select the class of models to use in order to make cost-performance tradeoffs best suited for your application. You can visit our pricing page for more information on our model tiers.

Python SDK

TypeScript SDK

API

Name	SDK Parameter	Description
Best (default)	`aai.SpeechModel.best`	Use our most accurate and capable models with the best results, recommended for most use cases.
Nano	`aai.SpeechModel.nano`	Use our less accurate, but much lower cost models to produce your results.

Python SDK

Python

TypeScript SDK

TypeScript

C#

Ruby

PHP

You can change the model by setting the speech_model in the transcription config:

1 import assemblyai as aai
2 
3 aai.settings.api_key = "<YOUR_API_KEY>"
4 
5 # audio_file = "./local_file.mp3"
6 audio_file = "https://assembly.ai/wildfires.mp3"
7 
8 
9 config = aai.TranscriptionConfig(speech_model=aai.SpeechModel.nano)
10 
11 transcript = aai.Transcriber(config=config).transcribe(audio_file)
12 
13 if transcript.status == "error":
14   raise RuntimeError(f"Transcription failed: {transcript.error}")
15 
16 print(transcript.text)

For a list of the supported languages for each model, see Supported languages.