The Open Weights
LatestModelsLeaderboardsCompanies
Subscribe
The Open Weights

The daily record of open-source AI. New model releases, leaderboards, and what's coming next — written for people who ship.

Refreshed every 12 hours

Discover

  • Latest releases
  • New today
  • Trending models

Browse

  • All models
  • Companies
  • Categories
  • Leaderboards

About

  • About
  • Editorial policy
  • Hardware estimates
  • RSS feed
  • llms.txt
  • Newsletter

© 2026 The Open Weights. An independent publication.

PrivacyTermsSMSAggregated by Claude · curated by humans.
S

Company

StepFun

5 models
CategoriesVision-LanguageText → SpeechMusicAny-to-Any

Releases

StepFun/Vision-LanguageDatacenter

StepFun Posts Step-5-Preview Vision-Language Model

The Chinese AI lab's early look at its next multimodal system arrives on Hugging Face ahead of a full release.

Sep 20, 2026
Vision-LanguageText / LLM
Step-5-Preview
StepFun/Text → Speech

StepFun's StepAudio 3 Realtime targets live voice AI

The audio-language foundation model builds a listen-converse-think-act loop aimed at natural, low-latency spoken interaction.

Sep 11, 2026
Text → SpeechSpeech → Text
StepFun/Music

StepFun's StepAudio 3 Music Plans Before It Plays

The new open model separates musical structure from sound, generating long-form tracks from text prompts with an explicit planning stage.

Sep 10, 2026
Music
StepFun/Text → Speech

StepFun's StepAudio 3 Gen Unifies TTS and Music

A single discrete autoregressive model handles speech, voice design, sound effects, and music generation.

Sep 10, 2026
Text → SpeechMusic
StepFun/Any-to-AnyRuns on a laptop

StepFun Releases Step-Audio 2 mini, a Unified Audio AI

The new open-source model handles both speech recognition and audio generation in a single, end-to-end architecture.

Aug 28, 2025
Any-to-AnyText → Speech
Step-Audio 2 mini