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  1. The Decoder85

    Meituan releases a 1.6-trillion-parameter agent model that never touched an Nvidia GPU

    Meituan has released the weights for LongCat-2.5, a 1.6-trillion-parameter mixture-of-experts model for autonomous agent and coding tasks that activates roughly 48 billion parameters per token and was trained entirely on Chinese hardware. It handles up to one million tokens of text, image, and video input via API, and Meituan reports 88.4 on Terminal Bench v2.1 and 64.6 on DeepSWE, close to but below Claude Opus 5 and GPT-5.6 Sol on several benchmarks. The weights are MIT-licensed, and the self-hosting guide describes a 194-chip Huawei Ascend Atlas A2 cluster with no Nvidia GPU guidance.

    Why it matters: It documents a frontier-scale open-weight agent model trained and served entirely on Chinese accelerators, with benchmark comparisons against leading Western models.

  1. Hacker News AI88

    Edge0-145B: Frontier AI Capabilities on Your Own Computer

    The company open-sourced Edge0-145B and Edge0-120B, describing Edge0-145B as the first open-source 145-billion-parameter on-device model, alongside a unified inference framework and deployment tools. It reports 29GB peak memory, 80+ tokens/s decoding, 1,100+ tokens/s prefill, roughly 120W typical power and 128K–256K context on a compatible laptop, with benchmark scores compared against named cloud models. The release also describes shared-matrix sparse experts, tiered GPU/system-memory/SSD loading and CPU-GPU co-scheduling, plus local demonstrations in video, Blender 3D scenes, games, drone control and PCB design.

    Why it matters: It offers a detailed, benchmark-backed look at how a 100B+ model is engineered to run locally, useful for readers weighing on-device versus cloud AI.

  2. Google DeepMind88

    Introducing Gemini 4 Hydrogen

    Google announced Gemini 4 Hydrogen, a fast, efficient model for everyday coding and agentic workflows, available across the Gemini API, AI Studio, Gemini for business, the Gemini app, Google Search, and paid Google AI Pro and Ultra subscribers in Google Antigravity. It is priced at $1.50 per million input tokens and $7.50 per million output tokens across its 1 million-token context window, and surpasses Argon on the Artificial Analysis Intelligence Index at its default high thinking level (51 vs. 50, reaching 54 at xhigh). Google also introduced Orchestrator in Google Antigravity, which switches between models like Carbon and Hydrogen within a session and reached near-Carbon task success rates on Terminal-Bench 4.0 while consuming 24% less quota and completing 19% faster.

    Why it matters: The post details a new model's benchmarks, pricing, and rollout across developer, enterprise, and consumer surfaces, useful for readers tracking Gemini releases.

  1. Google DeepMind88

    Gemini 4 Carbon is now available

    Google released Gemini 4 Carbon to developers, enterprises, scientists, and consumers, describing it as its strongest model for cybersecurity capabilities and long-horizon agentic workflows in knowledge work, software engineering, and scientific reasoning. It ranks #1 on CursorBench 4.0, Perplexity's WANDR, and Zapier's AutomationBench at more than 2X lower cost per task than the next best external model, and is available via the API in Google AI Studio and Gemini for business at $2 per million input tokens and $10 per million output tokens. Google also previewed /swarm in Google Antigravity and reported safety results including a 0% prompt injection attack success rate on the Gray Swan IPI benchmark.

    Why it matters: The post is a dense launch announcement with benchmark rankings, pricing, and safety figures that help readers judge where Carbon sits relative to Gemini 4 Argon.

  1. MarkTechPost85

    Anthropic Launches Claude Fable 5.2 and Mythos 5.2: Same Model, Different Safeguards

    Anthropic released Claude Fable 5.2, a frontier model with a 1M-token context window and 128K max output, available only via hosted API on the Claude Platform, AWS, Google Cloud and Azure at $8/$40 per million input/output tokens. Mythos 5.2 is the same underlying model with fewer cyber and biology safeguards, gated behind Anthropic's Cyber and Life Sciences Verification Programs. Anthropic reports Fable 5.2 ahead of Opus 5.5 on most benchmarks it published, with about 55% fewer blocks than Fable 5.1.

    Why it matters: Useful for readers tracking frontier model releases, since it details the two-tier safeguard structure, self-reported benchmark gaps and per-token pricing.

  2. AWS Machine Learning Blog72

    Introducing Claude Fable 5.2 on AWS

    Anthropic's Claude Fable 5.2 and Claude Mythos 5.2 are now available on Amazon Bedrock and Claude Platform on AWS, with Fable 5.2 positioned as Anthropic's most capable generally available model for coding, math, and science, and Mythos 5.2 offered through verification programs for cyber security and life sciences work. Fable 5.2 is designated a Covered Model requiring up to 30 days of data retention and human safety review by default, with an aws_review retention mode set on the account or project before invocation, while Enterprise Frontier Safeguards combining zero data retention with misuse detection is in development. The post includes a Boto3 example using model ID global.anthropic.claude-fable-5-2 and describes the claude-api skill in Claude Code for migrating existing codebases.

    Why it matters: Useful for teams planning to adopt or migrate to Fable 5.2 on Bedrock, since it details retention requirements, fallback behavior, and migration tooling.

  1. Hacker News AI82

    Tencent Launches Hy4, One of the Leading Open-Source AI Models

    Tencent announced Tencent Hy4, its latest-generation large language model, which it says ranks among the world's leading open-source models, with model weights and system cards planned for release in the coming days. Hy4 adds visual understanding and computer-use capabilities for the first time, along with improvements in instruction following, long-context comprehension and long-horizon agentic tasks, and is available across Tencent Cloud TokenHub, WorkBuddy, CodeBuddy, Yuanbao, WeCom's AI Assistant (Dayuan) and ima, with API access via OpenRouter, Hermes and OpenCode. Pricing remains about US$0.90 per million input tokens, US$2.70 per million output tokens and US$0.045 per million cached input tokens, with Hy4 Flash scheduled for release soon.

    Why it matters: The announcement is a detailed primary source on a major open-source model release, including benchmark comparisons, safety assessments and pricing.

  1. MarkTechPost76

    Ricursive AI Releases Ripple-65B Preview: A 65B Dense Open-Weight Model Scoring 80.5 on Terminal-Bench 2.1

    Ricursive Intelligence released Ripple-65B Preview, a 65B dense open-weight model pretrained from scratch on 12T tokens with up to 1M context, shipping three Apache 2.0 checkpoints (instruction-tuned BF16, NVFP4, and BF16 base). Ricursive reports 80.5 on Terminal-Bench 2.1, the top self-reported score among US open-weight models, while trailing larger MoE rivals on SciCode (39.4) and DeepSWE 1.1 (44.3), with full R&D cost stated at $32M. Weights are on Hugging Face, with Together AI, GMI Cloud and OpenRouter listed at launch and an experimental NVFP4 build targeting NVIDIA DGX Spark.

    Why it matters: Useful for readers tracking open-weight agentic coding models, since it pairs self-reported benchmark claims with a detailed architecture, cost and deployment breakdown.

  1. Mistral AI82

    Le Chonk: Built for Coders, Trusted by Defenders.

    Mistral released the open weights of Mistral Large 4 (Le Chonk), a 1-trillion-parameter natively multimodal model trained from scratch in Europe, reporting leading open-weight results on coding benchmarks such as FrontierCode 2.0 (19.7%) and Terminal-Bench 4.0 (41%), plus 51% on the Artificial Analysis Cyber Index. It offers three reasoning modes (Low, Medium, High) and is priced at $0.70 input / $0.07 cached input / $2.10 output per million tokens under a modified MIT license that requires a separate commercial license for Model-as-a-Service offerings.

    Why it matters: The post details benchmark scores, pricing, licensing terms and deployment options for a flagship open-weight model, useful for developers weighing coding performance against cost and control.

  2. Google DeepMind82

    Gemini 4 Carbon: Our next frontier model

    Google announced Gemini 4 Carbon, its strongest model with state-of-the-art cybersecurity and long-horizon capabilities, ranking #1 on the Artificial Analysis Intelligence Index v5.0 at 59 and scoring 88.2% on SEC-bench Pro, 54.8% on ExploitGym, and 71.0% on CWE-bench. It launches at Argon's introductory price of $2 per million input tokens and $10 per million output tokens, initially available to a subset of cyber defenders and trusted partners through the Fairwind Program before wider release. Google reports reduced misalignment alerts, a 0.0% prompt-injection attack success rate on Gray Swan's IPI Benchmark, and 0.0% successful cheating on Terminal-Bench 4.0.

    Why it matters: It documents a major frontier model release with concrete benchmark numbers and a staged, safety-focused rollout, useful for tracking competitive and cybersecurity trends.

  1. The Decoder87

    GPT-6.1 Terra halves OpenAI's API prices and still gains ground on its larger models

    OpenAI released GPT-6.1 Terra, priced at $1 per million input tokens and $5 per million output tokens—half the cost of GPT-5.6 Terra and below Claude Sonnet 5.5's $2/$10. Artificial Analysis reports it gains 6 Intelligence Index points over GPT-5.6 Terra at maximum reasoning effort while costing $0.40 versus $1.40 per task, and it solves 50.3% of Terminal-Bench 4.0 tasks versus 21.5% for its predecessor. It is available now for Plus, Pro, Enterprise, and Edu users in ChatGPT Work and Codex and via the API, though OpenAI still recommends GPT-6.1 Sol and GPT-6 Astra for the most demanding coding tasks.

    Why it matters: The piece pairs concrete pricing and benchmark figures with independent Artificial Analysis evaluations, useful for anyone weighing mid-tier model costs against capability.

  1. Latent Space82

    [AINews] Kimi 3.1 Pro 104BA-2.8T: Fable-5.1-Class Open Weights narrows Closed-AI lead to 1 month... and Pro Highspeed API with 2-3× speed

    Moonshot launched Kimi K3.1 Pro, a multimodal 3T-class mixture-of-experts model with 2.8 trillion total parameters, 104 billion active parameters and a 1-million-token context window, available via API with weights promised for November 4, 2026. Artificial Analysis placed it fourth on its Intelligence Index at 55, behind Opus 5.5 at 58 and Sonnet 5.5 and Muse Wonder Full at 56, and said the leading-open-versus-proprietary gap would narrow from 12 points to three once weights are released. Standard pricing is $2/M input, $10/M output and $0.20/M cached input tokens, with a Highspeed version at twice the price that Moonshot claims generates output 2–3× faster.

    Why it matters: Useful for tracking how close open-weight models have come to the closed frontier, plus the caveats around benchmark provenance, serving economics and the still-unreleased weights.

  2. The Decoder84

    Chinese AI model Kimi K3.1 Pro is closing in on Anthropic's Claude Opus 5.5

    Moonshot AI released Kimi K3.1 Pro, a post-trained successor to Kimi K3 that scores 55 points on the Artificial Analysis Intelligence Index, an 11-point gain that places it fourth behind Claude Opus 5.5 (58), Claude Sonnet 5.5 (56) and Muse Wonder Full (56). Moonshot says the model keeps K3's 2.8 trillion total and 104 billion active parameters with a one-million-token context window, cuts token prices by 33 percent, and shows its largest gains on agentic tasks, while cyber-related training data was stripped for the planned open-weights release. A faster K3.1 Pro Highspeed variant is also available through Kimi.ai, Kimi Work, Kimi Code and the Kimi API.

    Why it matters: It quantifies how close an open-weights Chinese model has come to top proprietary systems and documents Moonshot's deliberate removal of offensive cyber capabilities before release.

  1. Mistral AI83

    Introducing Mistral Large 4

    Mistral launched a public preview of Mistral Large 4, a 1-trillion-parameter natively multimodal model with 52 billion active parameters, trained from scratch on 3,800 NVIDIA Grace Blackwell GPUs in Mistral's own European datacenters, with weights to be released by the end of the month. Mistral reports competitive performance across coding, agentic workflows, multimodal understanding, cybersecurity, science and knowledge work, claiming it outperforms any open-weight model developed in the US or Europe. The preview API is available on Mistral Studio, and the model will serve as the foundation for a new generation of specialized Mistral models.

    Why it matters: Useful for readers tracking open-weight frontier models, European AI sovereignty, and Mistral's claimed benchmarks and release timeline.

  1. Google DeepMind88

    Gemini 4 Argon: our next era of frontier intelligence

    Google announced Gemini 4 Argon, a frontier model rolling out first to trusted cyber defenders through its Fairwind Program, with an introductory price of $2 per million input tokens and $10 per million output tokens. Google reports state-of-the-art results on DeepSWE v1.1 (77.9%), the Vals Index, LVBench (91.7%), AutomationBench (51.3%), and a tie for first on CWE-bench v1 (68%), alongside internal uses such as C/C++ to Rust migrations and memory optimization. The model raises the output token limit to 1M and is being released in phases with safeguards against misuse, prompt injection, and misalignment before broader availability to paid API customers and Google AI Ultra subscribers.

    Why it matters: The piece is a detailed primary source on a frontier model's claimed benchmarks, pricing, staged release, and safety approach, useful for tracking how leading labs frame capability and rollout.

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