LM Arena launched a new Search Arena Leaderboard, designed to evaluate LLMs on search tasks Currently, the top-ranked LLMs on the leaderboard are Google’s Gemini-2.5-Pro and Perplexity’s Sonar lineup!
@rowancheung
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Ilya Sutskever’s SSI Raises $2B at $32B Valuation
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Ex-OpenAI chief scientist Ilya Sutskever's Safe Superintelligence (SSI) has reportedly raised $2B at a $32B valuation
— Rowan Cheung (@rowancheung) 15 avril 2025
This comes as SSI continues to climb a "different mountain" for developing advanced, superintelligent AIpic.twitter.com/xBpbuH7NuCEx-OpenAI chief scientist Ilya Sutskever's Safe Superintelligence (SSI) has reportedly raised $2B at a $32B valuation This comes as SSI continues to climb a "different mountain" for developing advanced, superintelligent AI
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ByteDance Seaweed: Efficient 7B Video AI Model Released
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TikTok parent ByteDance just dropped Seaweed, a hyper-efficient 7B-param video AI
— Rowan Cheung (@rowancheung) 15 avril 2025
—Supports text-to-video, image-to-video, and audio-driven synthesis
—Clips up to 20s
—Matches or outperforms larger models like Sora, Kling 1.6, and Veopic.twitter.com/gkKxPa8OL3TikTok parent ByteDance just dropped Seaweed, a hyper-efficient 7B-param video AI —Supports text-to-video, image-to-video, and audio-driven synthesis
—Clips up to 20s
—Matches or outperforms larger models like Sora, Kling 1.6, and Veo -

Hugging Face Acquires Pollen Robotics for Open Humanoid Development
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Hugging Face acquired Pollen Robotics, a French startup building open-source humanoids
— Rowan Cheung (@rowancheung) 15 avril 2025
Pollen is already selling Reachy 2, an open and VR-compatible humanoid for research, education, and embodied AI
A big move from HF in open robotics!pic.twitter.com/PUyCqLvyABHugging Face acquired Pollen Robotics, a French startup building open-source humanoids Pollen is already selling Reachy 2, an open and VR-compatible humanoid for research, education, and embodied AI A big move from HF in open robotics!
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Google Releases DolphinGemma AI for Dolphin Vocalization Generation
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Google released DolphinGemma, an AI that can generate dolphin vocalizations The system analyzes dolphin whistles and sounds to identify patterns and predict subsequent sounds! Set to be open-sourced soon!
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OpenAI Releases GPT-4.1 Models with Enhanced Developer Capabilities
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OpenAI released GPT-4.1, 4.1 Mini, and the ultra-fast 4.1 Nano—all designed for devs — Each model beats GPT-4o and 4o mini on dev tasks
— 1M token context windows
— GPT-4.1 scored 55% on SWE-Bench Verified
— Starting at $0.10/0.40 per million I/O tokens -
OpenAI Releases Three GPT-4.1 Models with 1M Token Context
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TODAY'S AI NEWS: OpenAI just dropped three GPT-4.1 models for devs—API-only and packing a jaw-dropping 1M-token context window. Plus, more news from Google, Hugging Face, ByteDance, SSI, and LM Arena. Here's everything you need to know:
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Together AI Releases DeepCoder-14B Open-Source Coding Model
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Together AI dropped DeepCoder-14B, a new reasoning-capable coding AI —Matches o3-mini (low) and o1 on competition-level coding tasks
—Also generalizes well to math, scoring 73.8% on AIME
—Fully open-sourced with dataset, code, and training recipe -

Stanford’s AlphaXiv Deep Research Automates Literature Reviews Instantly
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Stanford students' research discussion forum AlphaXiv introduced Deep Research for arXiv
— Rowan Cheung (@rowancheung) 9 avril 2025
The tool compiles literature reviews from trending papers, turning hours of research work into mere seconds of natural language searchpic.twitter.com/wvrVtiqNoWStanford students' research discussion forum AlphaXiv introduced Deep Research for arXiv The tool compiles literature reviews from trending papers, turning hours of research work into mere seconds of natural language search
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Deep Cogito Launches Open-Source Models for Superintelligence
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Deep Cogito emerged from stealth with a mission to build "general superintelligence" The startup also launched Cogito v1 Preview, a family of open-source models that it claims beats the best available open-source models of the same size
