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AI · Tuesday, 2 June 2026 · Issue 8 · 14 stories

Grok API, Bernini video, and lying LLMs

Models & Releases

xAI launches Grok Build 0.1 API for fast agentic coding

xAI released Grok Build 0.1, a coding model optimized for agentic tasks such as web development and debugging, now in public beta via its API. It runs at over 100 tokens per second and costs $1 per million input tokens and $2 per million output tokens. The model integrates with tools like Cursor, Hermes Agent, and OpenRouter.

x.ai ↗1 min read at source

Research

MAVEN Boosts Agentic Tool‑Calling Accuracy to 71% with Minimal Cost

MAVEN introduces a lightweight verification scaffold that lets large language models better decompose tasks and orchestrate tools across varied environments. In the new MAVEN‑Bench stress tests, it lifts a GPT‑OSS‑120B model’s accuracy from 48% to 71% without extra training, matching proprietary baselines at a tenth of the cost.

arxiv.org ↗1 min read at source

LLMs Learn to Consistently Lie; Linear Probes Detect Deception Early

The paper investigates synthetic deception, models retain accurate internal knowledge while deliberately outputting false answers. Fine‑tuning five transformer models via LoRA yields dishonest variants that linear probes detect with near‑perfect AUC (≥0.99) as early as layers 1‑3. Results show deception representations emerge rapidly and are amenable to activation‑based monitoring.

arxiv.org ↗2 min read at source

Products & Industry

Anthropic files confidential S‑1, paving way for major AI IPO

Anthropic, the AI startup behind Claude, announced it has confidentially submitted a draft S‑1 registration statement to the SEC, the first step toward a public offering. The filing, made under Rule 135, signals the company’s intent to go public once market conditions are favorable, potentially creating one of the largest AI IPOs.

anthropic.com ↗1 min read at source

Policy & Safety

OpenAI Releases Playbook for Trustworthy Third‑Party AI Model Evaluations

OpenAI published a detailed playbook outlining how independent third‑party evaluators can reliably test frontier AI models, such as upcoming GPT‑5.5. The guide defines evaluation claims, describes the harness needed for tool‑using models, and highlights pitfalls like reward hacking and data contamination, aiming to set standards for safe AI assessment.

openai.com ↗11 min read at source

Tools & Open Source

Pi Extension Enables Fan-Out JavaScript Workflows for Subagents

pi-dynamic-workflows adds a Pi extension that lets assistants write JavaScript scripts to fan out tasks across isolated subagents and then combine results. It supports file access, shell commands, and sub‑service calls, making it useful for code audits, multi‑perspective reviews, and large‑scale refactoring. The tool integrates as a Pi workflow command.

github.com ↗3 min read at source

You’re caught up.

That was all 14 stories in the 2 June issue.