China's 2.8T open model lands the same week Claude hits turbulence

From the editor

Two Claude models had elevated errors today, which is noise. The signal is Kimi K3: a 2.8 trillion parameter open-weight model with million-token context that any team can run. The open model frontier just moved, again, and faster than most roadmaps anticipated. Meanwhile, the tooling layer keeps consolidating around standards like SKILL.md, and researchers are putting real money on corrigibility. The race is accelerating on every axis simultaneously: capability, openness, reliability, and control.

TL;DR

Kimi K3 is a 2.8T open model that directly challenges frontier closed alternatives
SKILL.md proposes one unified agent instruction file to replace fragmented per-tool configs
A new 200k corrigibility research fund signals serious institutional focus on controllable AI

7 curated itemsscroll for the brief

Releases

What shipped · 4 items

Kimi K3: China's 2.8 Trillion Parameter Open Model Just Raised the Bar

Moonshot AI's Kimi K3, a 2.8 trillion parameter open-weight model with a 1M token context, challenges frontier models at competitive pricing. A significant new competitor in the open model space.

dev.to

One SKILL.md replaces CLAUDE.md, AGENTS.md, and .cursorrules

SKILL.md is an open standard that unifies agent instructions into a single file, replacing fragmented per-agent config files across Claude Code, Cursor, and other AI coding tools.

dev.to

Elevated errors across Fable 5

Anthropic reported elevated errors across the Fable 5 model. Users experiencing issues should monitor the status page for resolution updates.

Status

Elevated error rates for Sonnet 5

Anthropic flagged elevated error rates for Sonnet 5. Users relying on this model in production should check the status page for ongoing updates.

Status

Tools

Worth a look · 1 item

I built an open-source canvas where Claude responds beside your handwritings

PenEcho is an open-source whiteboard canvas that uses the Anthropic API to let Claude interpret and respond directly to handwritten equations and diagrams, powered by Claude Opus 4.8.

r/ClaudeAI

Reading

Long-form signal · 2 items

Inoculation Adapters Improve Upon Inoculation Prompting

New research shows that Inoculation Adapters suppress unwanted model behaviors more effectively than prior prompt-based inoculation methods, with fewer backdoors introduced. Relevant to Claude safety and fine-tuning research.

LessWrong

Announcing the Corrigibility Research Fund

A new research fund is offering at least $200,000 in grants and prizes for work on AI corrigibility in 2026, aiming to advance the field of controllable and correctable AI systems.

LessWrong

Always at hand

Reference links you keep open

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