{"type":"post","id":"higurashi-releases-haru-4b-an-open-full-duplex-02f6d1","slug":"higurashi-releases-haru-4b-an-open-full-duplex-02f6d1","title":"higurashi releases Haru-4B, an open full-duplex spoken dialogue base model","description":"Higurashi has released Haru-4B, an open pretrained model designed to listen and speak continuously rather than taking turns in separate speech input and output stages.","retrieval_nugget":"Higurashi has released Haru-4B, an open pretrained model designed to listen and speak continuously rather than taking turns in separate speech input and output stages. Its reported latency and training scale make it a useful research starting point for teams exploring real-time voice interaction, but the release is a base model, not a hosted product or turnkey agent.","published_at":"2026-11-14","updated_at":"2026-11-14","record_date":"2026-11-14","date_kind":"published_at","topics":["models","multimodal","open-models"],"entities":["Higurashi","Haru-4B","Qwen3.5-4B","Block","Dessa","FastDialogueSidon","Sidon"],"related_patterns":[],"novelty_label":"new_fact","what_changed":"Higurashi released Haru-4B, an open pretrained full-duplex dialogue model with reported 65 ms latency, multilingual support and downloadable weights and code.","prior_refs":[],"source_url":"https://blog.higurashi.ai/melte/haru4b","source_urls":["https://blog.higurashi.ai/melte/haru4b"],"schema_version":"newruntime-agent-readable-v0.2","stable_id":"post:higurashi-releases-haru-4b-an-open-full-duplex-02f6d1","status":"published","visuals":[],"editor":{"role":"editor","name":"Andrey Reshetnikov","profile":"https://newruntime.com/owner-profile.md","profile_json":"https://newruntime.com/owner-profile.json","same_as":["https://www.linkedin.com/in/reshetnikov1/","https://t.me/lapetuse"]},"routes":{"html":"https://newruntime.com/posts/higurashi-releases-haru-4b-an-open-full-duplex-02f6d1/","markdown":"https://newruntime.com/posts/higurashi-releases-haru-4b-an-open-full-duplex-02f6d1.md","json":"https://newruntime.com/posts/higurashi-releases-haru-4b-an-open-full-duplex-02f6d1.json"},"markdown_url":"https://newruntime.com/posts/higurashi-releases-haru-4b-an-open-full-duplex-02f6d1.md","next_reads":[{"type":"topic","path":"/topics/models/","url":"https://newruntime.com/topics/models/","title":"Models","reason":"Explore the models topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/models.md","json_url":"https://newruntime.com/topics/models.json"},{"type":"topic","path":"/topics/multimodal/","url":"https://newruntime.com/topics/multimodal/","title":"Multimodal","reason":"Explore the multimodal topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/multimodal.md","json_url":"https://newruntime.com/topics/multimodal.json"},{"type":"topic","path":"/topics/open-models/","url":"https://newruntime.com/topics/open-models/","title":"Open Models","reason":"Explore the open-models topic hub.","media_type":"text/html","markdown_url":"https://newruntime.com/topics/open-models.md","json_url":"https://newruntime.com/topics/open-models.json"},{"type":"collection","path":"/posts/","url":"https://newruntime.com/posts/","title":"Field Notes","reason":"Open the latest editorial analysis.","media_type":"text/html","json_url":"https://newruntime.com/posts.json"},{"type":"collection","path":"/sources/","url":"https://newruntime.com/sources/","title":"Sources","reason":"See the original sources this archive cites.","media_type":"text/html"}]}