> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sunor.cc/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> What's new in the sunor API

# Changelog

## May 2026

### Udio Input Validation

The Udio task input is now validated at the API layer for clearer errors:

* Submitting Udio tasks with Suno-style fields (`gpt_description_prompt`, `make_instrumental`) now returns **`400 Bad Request`** with a message that names the right field — instead of the previous generic `502 "Upstream provider error"`.
* The validation message links to the [Udio Model](/models/udio) docs so first-time users can correct their request on the next try.
* No change to existing Udio integrations that already use the `prompt` field.

### Udio Model Support

sunor now supports the Udio AI music model alongside Suno. Use `"model": "udio"` in your task request.

* Task type: `"music"` only (regular mode) — see [Udio Model](/models/udio) for the full reference.
* Pricing: **5 credits per generation** (\$0.05).
* \~2 audio tracks returned per call (same as Suno's music task).

Lyrics-only generation, audio upload, and clip concatenation are not yet supported for Udio. Use the [Suno model](/models/suno) for those.

## April 2026

### Suno V5.5 Support

sunor now uses **Suno V5.5** (`chirp-fenix`) as the default model for music generation. V5.5 brings improved audio quality, better vocals, and more accurate style adherence.

* **No API changes required** -- your existing code works as-is
* **Same pricing** -- 10 credits per music generation
* The model version is set automatically; no need to specify it in requests

### Contact & Community

* Added [Telegram group](https://t.me/+Wz-V9IBpSY5lMzE1) for community support
* Email support available at [support@sunor.cc](mailto:support@sunor.cc)

***

## February 2026

### Launch

* sunor API launched with Suno V5 (`chirp-crow`) support
* Task types: music, lyrics, upload, concat
* Pay-as-you-go credits system
* Crypto payments via OxaPay