ClaudeCode
Hello! In May 2026, Anthropic released Claude Opus 4.8. Then, in June 2026, Fable5 /Mythos5 was released. However, owing to certain circumstances, it is currently (as of June 18, 2026) unavailable — which makes Claude Opus 4.8 effectively the highest-tier Claude model available to the general public. So this
ClaudeCode
A record of AI "confabulation" across a model switch, traced through raw Claude Code logs Hello! This is the Qualiteg Product Development Team. Today's story is about a question: how far can we trust an AI agent's reports ? It began in one of our
LLM
Hello! This is the Qualiteg Product Development Team. On June 9, 2026, Anthropic announced Claude Fable 5 and Claude Mythos 5. In this article, we sort out what Fable 5 is, how it differs from Mythos 5, and what changes from the standpoint of using Claude Code and AI agents
ClaudeCode
Hello! Today we take a detailed look at the "Usage Policy violation" errors that can suddenly appear while using Claude Code — namely, the real-time cyber safeguards and their false positives (misdetections) — covering both their patterns and how to handle them. Have you ever been stopped in your tracks
GPU
Hello! This is the Qualiteg Product Development Team! Today we describe what happened when we put two RTX 4090s into a Windows + WSL2 machine and tried to run a large open model with vLLM — and got thoroughly stuck at NCCL initialization. Information on this is scattered and fragmentary, and it
ClaudeCode
Hello! This is the Qualiteg Product Development Team. While developing with Claude Code (CLI), we ran into a phenomenon where the following error appeared repeatedly and brought work to a halt. ● The model's tool call could not be parsed (retry also failed). Retrying did not fix it, and
LLM
Hello, this time we have put together a guide to API pricing across the major LLM providers (Claude / GPT / Gemini / Grok), current as of May 13, 2026. Pricing by Provider Let's start with each provider's current lineup. All prices are per 1M tokens; yen figures assume
Hello! Sometimes, even after installing Claude Code with the official PowerShell installer (irm https://claude.ai/install.ps1 | iex), running claude --version gets you scolded with "The term 'claude' is not recognized as a name of a cmdlet..." This is a known bug reported on Anthropic&
LLM
Hello! This is the Qualiteg Product Development Team! In April 2026, Anthropic released Claude Opus 4.7. This update is not simply a story of higher benchmark scores. The model's behavior itself has changed — how it interprets instructions, how long its responses run, how often it calls tools,
DIY GPU Machines
NVIDIA GPU List Search Series All SM_120 (Blackwell) SM_103 (Blackwell Ultra) SM_100 (Blackwell) SM_90 (Hopper) SM_89 (Ada Lovelace) SM_86/SM_87 (Ampere) SM_75 (Turing) SM_70/SM_72 (Volta) SM_60/SM_61/SM_62 (Pascal) SM_50/SM_52/SM_53 (Maxwell)
Daily Dev Tips
Hello! This is the Qualiteg Product Development Team. The moment you run npm start in PyCharm's built-in npm tool terminal, the IDE vanishes without a single error message. Restart it, try again, and it crashes again. The logs offer no clues. In this post we document our encounter
LLM
Introduction This report provides a comprehensive analysis of the performance of Japanese-capable LLMs, based on benchmark data from Nejumi Leaderboard 4 (March 6, 2026 edition). Last time, we published our analysis report on the December 18, 2025 edition, and in roughly three months the landscape has shifted dramatically once again.
LLM
Hello! Welcome to a special extra installment of our LLM Inference Infrastructure Provisioning Course! Part 3, "Estimating Inference-Time Memory Consumption for Your Model", we introduced the two major consumers of GPU memory, the model footprint and the KV cache, and explained how to calculate the KV cache size
Python
Hello! This is the Qualiteg product development team! While building a PII (personally identifiable information) detection demo app, we were implementing a feature that highlights the positions of detected entities. The stack is Python (FastAPI) on the backend and JavaScript on the frontend. One day, when we used the following
IT & AI Technology
Hello! This is the Qualiteg product development team! "We implemented optimistic locking, but we're still getting conflict errors..." This actually happened to us. In this article, we explain the difference between optimistic and pessimistic locking through a real incident we ran into. Rather than abstract explanations,
Daily Dev Tips
Hello! This is the Qualiteg Product Development team! Today we would like to share a case of a GCC internal compiler error (Segmentation fault) that occurred while building Python from source in a Docker environment. At first glance it looks like "insufficient resources" or a "Docker-specific issue,