The problem it solves
Every speech provider has its own way of doing things: own request format, own error handling, own parameters. And when someone wants to change an integration from Model A to B usually has to build and maintain a second new integration. That means one SDK per provider, different request formats, provider-specific error handling, and weeks spent evaluating each new model.How it works
You call a model available in SLNG gateway, and the Unified API translates it into whatever each provider expects, then translates the answer back.- Authentication, request format, and responses stay the same across every model.
- To switch providers, you only change which model they point to.
- It covers both STT (speech-to-text) and TTS (text-to-speech).
- SLNG-hosted models and third-party models sit behind the same unification.
What it unlocks
- Freedom to switch. New and better models become available as soon as SLNG adds them, with no upgrade work on the customer’s side.
- Easy testing. Teams can send a share of their traffic to a different model to compare results, try new models in minutes, and fall back to another provider without changing how they handle errors.
- No loss of control. The Unified API lets you do anything. Settings like voice, language, audio format, and speed can still be passed through.