FULL STORY
dots3-note:From Open-Source Launch to Real-World Test
rednote's dots studio open-sourced dots3-note Preview, a 280B-parameter multimodal agent model with 512K context. Developers quickly tested it on a long-horizon wedding-coordination task, showcasing its agentic capabilities.
2026-08-29 ~ 2026-08-30 · 2 episodes · 7 posts
Episode 1 · rednote Open-Sources dots3-note: 280B-Parameter Multimodal Agent Model with 512K Context (2026-08-29, 5 posts)
On August 29, rednote's AI lab dots studio released the open-source multimodal agent model dots3-note Preview, targeting long-horizon, real-world agent tasks where requirements keep evolving. The model has 280 billion total parameters and 16 billion activated parameters, with a 512K context window, and is the first model in the dots3 family to jointly understand text, vision, and speech.
Confirmed
- Specs: 280B total / 16B activated parameters, 512K context length, open-source release
- Multimodal capabilities: joint understanding of text, vision, and audio
- Positioning: built for long-running workflows with evolving user needs that require continuous reasoning, execution, and dynamic adaptation; tackles the difficulty of maintaining plan coherence in long-horizon agent tasks
- Capability loop: pairs stronger coding, tool-calling, and end-to-end delivery capabilities to close the loop from task perception to action execution
- Official demo case: autonomously building a Xiaohongshu VR experience
Why It Matters
dots3-note is one of the few open-source models combining ultra-long context with joint understanding across text, vision, and speech, offering a new foundation model option for agent applications that need long-term memory and multimodal interaction. Its 512K context and sparse activation architecture (16B/280B) are purpose-designed for coherence in long-horizon tasks; follow-up community benchmarks will be worth watching.
- rednote explores open-weight multimodal model with 512K context for long-horizon agents — aftahi_ai · 2026-08-29
- dots3-note Preview: 280B Params, 512K Context for Long-Horizon Tasks — mhdfaran · 2026-08-29
- Rednote Unveils dots3-note Agent: 280B Total Params, 512K Context — SarahAnnabels · 2026-08-30
- dots3-note Preview Launched: 280B Total/16B Active, 512K Context, Multimodal — SarahAnnabels · 2026-08-30
- dots3-note Preview: first dots3 model to jointly understand text, vision and speech — SarahAnnabels · 2026-08-30
Episode 2 · dots3-note Demonstrated as Long-Horizon Agent in Wedding Planning Test (2026-08-30, 2 posts)
A developer tested dots3-note Preview as a wedding-coordination agent handling 120 guests, a $35k budget, and disruptions like storms. A technical blog and free API were released so readers can reproduce the experiment.
- dots3-note tested on wedding coordination: replanning under shifting constraints — SarahAnnabels · 2026-08-30
- dots3-note tech blog and free API out: run the wedding coordination test yourself — SarahAnnabels · 2026-08-30