525 articles
RoseTTAFold
RoseTTAFold is a deep learning tool that predicts the 3D structure of proteins from amino acid sequences, developed in David Baker's lab at the University of Washington in 2021.
RT-1 (Robotics Transformer)
RT-1 (Robotics Transformer) is a 35-million-parameter transformer model released by Google in December 2022 that maps camera images and a natural-language instruction to robot actions at 3 Hz.
RT-2 (vision-language-action model)
RT-2 (Robotics Transformer 2) is a vision-language-action model released by Google DeepMind in July 2023, trained on web and robotics data to output robot actions directly.
RT-X
RT-X is a pair of generalist robot-control models, RT-1-X and RT-2-X, trained by Google DeepMind and the Open X-Embodiment Collaboration on data from 22 robot types.
RTFM (AI model)
RTFM (Real-Time Frame Model) is a real-time generative world model by World Labs, released as a research preview in October 2025, that generates explorable 3D worlds frame-by-frame.
Runway Gen
Runway Gen is a family of professional AI video generation models by Runway, spanning Gen-1 in 2023 through Gen-4.5, which topped a text-to-video benchmark at launch.
s1 (AI model)
s1, also called s1-32B, is an open-source AI reasoning model created in January 2025 by researchers at Stanford University, the University of Washington, and the Allen Institute for AI.
Safetensors
Safetensors is a tensor serialization format created by Hugging Face in 2022 that stores tensors behind a JSON header, enabling safe, fast model loading without code execution.
SantaCoder
SantaCoder is a 1.1 billion parameter open-access large language model for code generation, trained by the BigCode project on Python, Java, and JavaScript code and released in December 2022.
Sarvam (सर्वम्) (model family)
Sarvam (सर्वम्) is a family of large language models for Indian languages built by Bengaluru startup Sarvam AI, beginning with the 2-billion-parameter Sarvam-1 in October 2024.
Sarvam AI speech models
Sarvam AI speech models are TTS and ASR systems developed by Sarvam AI. The Bulbul TTS models cover 11 Indian languages, and the Saaras ASR models cover 22 official Indian languages.
SCAIL
SCAIL (Studio-grade Character Animation via In-context Learning) is an open-weight pose-driven character-animation model built on Wan2.1 by Tsinghua University and Z.ai, released in December 2025.
scGPT
scGPT is a generative pretrained transformer foundation model for single-cell biology, pretrained on over 33 million human cells and published in Nature Methods in 2024, supporting tasks like cell type annotation and perturbation prediction.
SDXL
SDXL (Stable Diffusion XL) is a text-to-image latent diffusion model developed by Stability AI, whose 3-billion-parameter base model was released openly in July 2023 under the OpenRAIL++-M license.
SDXL Turbo
SDXL Turbo is a distilled version of Stability AI's SDXL 1.0 text-to-image model, released in November 2023, that generates a 512×512 image from a text prompt in one step.
SEA-LION
SEA-LION (Southeast Asian Languages in One Network) is a family of open large language models built by AI Singapore, first released in December 2023 to serve Southeast Asian languages.
SeamlessM4T
SeamlessM4T is a massively multilingual speech and text translation model released by Meta AI in August 2023, combining speech recognition, speech-to-speech, and text translation in a single model.
Seed-TTS
Seed-TTS is a family of large-scale speech generation models from ByteDance's Seed team, first described in June 2024, that clones a speaker's voice from a few seconds of reference audio.
Seed1.5-VL (ByteDance)
Seed1.5-VL is a proprietary vision-language foundation model developed by ByteDance's Seed team and released in May 2025, served only through Volcano Engine and retired in March 2026.
Seedance
Seedance is a family of text-to-video and multimodal audio-video generation models developed by ByteDance's Seed team, first released in 2025 and expanded through the 2.0 and 2.5 generations in 2026.
Seedance 2.5
Seedance 2.5 is a video generation model released by ByteDance's Seed team on July 31, 2026, known for single-pass 30-second clips with synchronized audio and up to 50 reference inputs.
Seedream
Seedream is a family of closed-weight text-to-image and image-editing models developed by ByteDance's Seed research team, first documented with Seedream 2.0 in early 2025 and positioned among the quality leaders in commercial image generation through 2026.
Seedream 4.0
Seedream 4.0 is a text-to-image generation and image-editing model released by ByteDance's Seed team on September 9, 2025, notable for unifying both tasks in a single architecture and briefly topping third-party image-generation leaderboards.
SeFi-Image
SeFi-Image is a text-to-image model family released in June 2026, built on Semantic-First Diffusion, a two-stream latent diffusion design that denoises semantic structure ahead of texture detail.
Segment Anything Model (SAM)
The Segment Anything Model (SAM) is a promptable image-segmentation model released by Meta AI in April 2023, with the SA-1B dataset of over 1.1 billion masks; SAM 2 extended it to video in 2024.
SenseVoice
SenseVoice is a family of open speech-understanding models released by Alibaba's Qwen team in July 2024, combining speech recognition with language identification, emotion recognition, and audio-event detection.
SERA (Ai2 Open Coding Agents)
SERA (Soft-verified Efficient Repository Agents) is a family of open-weight coding-agent models released in 2026 by the Allen Institute for AI, built on Qwen 3 and licensed under Apache 2.0.
Sesame CSM
Sesame CSM (Conversational Speech Model) is a family of speech-native conversational speech models by Sesame, first released in March 2025 after its viral Maya voice demo.
SkyReels
SkyReels is a family of open-weights, film-oriented video generation models developed by Skywork, first released in February 2025, spanning text-to-video, image-to-video, and talking avatars, and known for infinite-length generation.
SmolLM
SmolLM is a family of small, fully open language models released by Hugging Face for on-device use, spanning three generations from July 2024 to July 2025.