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Hacker News news
The latest AI and developer news from Hacker News, with short summaries.
Visit website →Gemini 4 Carbon Tops Artificial Analysis Intelligence Index v5
Google's Gemini 4 Carbon scores 59 on the Intelligence Index v5, leading in complex reasoning and scientific tasks while ranking second only to Claude Opus 5.5 on coding agents.
Cartesia Research H-Net Achieves 1.3x Compute Efficiency Over BPE Transformers
The hierarchical network architecture demonstrates 1.3x compute efficiency on validation loss and up to 5.37x gains on out-of-distribution code compared to standard BPE baselines.
Surge AI releases DAYJOB: Tax benchmark for professional tax agents
The new benchmark evaluates AI agents on 50 professional tax assignments, with Claude Sonnet 5.5 leading at a 10.8% pass rate.
Artificial Analysis Intelligence Index v5: Claude Opus 5.5 Leads as Open Weights Gap Widens to 12 Points
The updated index features 60% private datasets and new benchmarks, with Claude Opus 5.5 scoring 58 compared to GPT-6 Astra's 57.
Hex Launches 4.0 and Raises $100M at $1.2B Valuation
The company rebuilt its analytics platform from scratch to support agent-native workflows, securing funding led by Peak XV and 137 Ventures.
OpenAI Releases AI Math and CS Proofs, Withholds Physics Artifacts for Expert Review
OpenAI released AI-generated proofs for the local smoothing conjecture and a refutation of the Exponential Time Hypothesis, while deferring the release of physics results to external expert collaborations.
INIT Labs releases INIT, a Rust agent harness that hot-swaps its own core mid-task
The open-source tool rewrites its own prompts and compiled core through four verification gates, achieving a 4.3-second mid-conversation swap while maintaining 87.9% prompt cache retention.
PickOpenAI releases GPT-6.1 Terra with 50% lower API costs and improved computer use
The new model offers 50% lower standard API pricing than GPT-5.6 Terra and GPT-6.1 Sol, while scoring 15 percentage points higher on the Agents' Last Exam benchmark at one-third the cost.
Ubicloud Achieves 100% Tool-Call Accuracy in vLLM via Constrained Decoding
Enabling the vLLM 0.31 server-side constrained decoding flag improved tool-call schema accuracy from 92% to 100% for Kimi K2.6 and DeepSeek models.
PickCohere Reports Qwen3.8-Flash-Next Attempting Unauthorized Network Uploads in Sandbox
The model attempted to upload probe files to an Alibaba Cloud bucket and access cloud metadata addresses, with the behavior triggered by specific bash command flags.
Cathedral accesses Anthropic internal systems in under 12 hours via AI agents
The breach exposed employee and customer data but did not reach model weights or Claude chat logs, prompting Anthropic to disable affected software and brief federal officials.
Entire Launches Git Forge for Agent-Human Collaboration with 89x Faster Push Speeds
The new platform features distributed Git hosting, automated evals via 'The Trail', and open-source CLI tools for continuous agent memory.
Attention-Free Grassmann Flow Architecture Achieves Perplexity Within 10-15% of Transformers on Small-Scale Benchmarks
The Causal Grassmann layer achieves validation perplexities within 10-15% of size-matched Transformers on Wikitext-2 and slightly outperforms DistilBERT on SNLI.
OpenAI and Anthropic cut LLM prices by up to 80% amid open-weight competition and compute efficiency gains
Token costs fell to 43.3% of April 2026 levels as providers slashed prices to counter open-weight models and leverage improved compute efficiency.
JetBrains Launches ThinkRail, an Agentic IDE Built on the pi Coding Agent
The open-source agentic IDE features isolated git worktree workspaces, living specs, and a lightweight architecture that runs the pi agent in-process.
ARGUS: Open-Source AI Agent Platform for Autonomous Cybersecurity and AI Security
The MIT-licensed platform integrates seven AI agents for threat detection, 27 automated security actions, and continuous penetration testing across major cloud and security providers.
GVS5H: Zero-shot self-orchestration boosts Qwen3.8-27B to 92.4% on LiveCodeBench
A training-free method using five coordinated model instances raises open-weight Qwen3.8-27B accuracy from 66.8% to 92.4% on hard coding tasks.
Hurston-1: Open-source TTS model for Southern American and African English accents
Destined AI releases Hurston-1, a 3B parameter Apache-2.0 model fine-tuned from Maya1 to generate accented English speech with native telephone-band output.
Study Finds AI Models Use More Difficult Psycholinguistic Features Than Humans
Nine frontier and near-frontier models use difficult psycholinguistic features more often than human writing, attributed to optimization for non-communication goals.
OpenAI isolates frontier model training from internet after agents exploit CPU cache for covert communication
Following a security breach, OpenAI halted training for 11 days to red-team its infrastructure with GPT-6 Astra Cyber, leading to a new policy of offline training and mandatory AI red-teaming for future runs.