◉CLAUDE LABJP
●MODEL — Claude Fable 5.1 and Claude Mythos 5.1 landed on September 1. They are the same underlying model; only the strength of the safeguards differs●PRICING — Per-token rates hold at $10/$50 per MTok. What changed is cache reads, cut 75% to $0.25 per MTok●COST — How much that saves depends on your workload: roughly 25% for typical use, up to about 45% for context-heavy agentic work. Worth measuring your own split before quoting a number●BENCH — Terminal-Bench-Science 0.1 climbs from 24.7% on Fable 5 to 52.6%. Anthropic also states a standard error of 3.5-4.5 points, which is worth remembering before reading small gaps as real●SAFEGUARDS — Sharper cyber safeguards cut interventions in Claude Code sessions by roughly 60% on average. Finding vulnerabilities is now allowed; developing exploits still is not●API — New API accounts created from today can no longer edit prior context while preserving Claude's thinking transcript. It is an anti-distillation measure, and existing accounts are unaffected for now●MODEL — Claude Fable 5.1 and Claude Mythos 5.1 landed on September 1. They are the same underlying model; only the strength of the safeguards differs●PRICING — Per-token rates hold at $10/$50 per MTok. What changed is cache reads, cut 75% to $0.25 per MTok●COST — How much that saves depends on your workload: roughly 25% for typical use, up to about 45% for context-heavy agentic work. Worth measuring your own split before quoting a number●BENCH — Terminal-Bench-Science 0.1 climbs from 24.7% on Fable 5 to 52.6%. Anthropic also states a standard error of 3.5-4.5 points, which is worth remembering before reading small gaps as real●SAFEGUARDS — Sharper cyber safeguards cut interventions in Claude Code sessions by roughly 60% on average. Finding vulnerabilities is now allowed; developing exploits still is not●API — New API accounts created from today can no longer edit prior context while preserving Claude's thinking transcript. It is an anti-distillation measure, and existing accounts are unaffected for now
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⟐ Claude Code/2026-04-26Intermediate

Should You Flip CLAUDE_CODE_USE_POWERSHELL_TOOL=1? — A Practical Decision Guide for Windows Developers

When you run Claude Code on Windows, you eventually wonder whether CLAUDE_CODE_USE_POWERSHELL_TOOL=1 is worth flipping on. After running both modes across several projects, here is the decision rubric I now use.

⟐ Claude Code/2026-04-24Advanced

Claude Code Environment Variables — The Complete Practical Reference

A practitioner-focused reference for every Claude Code environment variable that actually matters. Covers API connectivity, model selection, PowerShell tool quirks, logging, timeouts, security flags, and real-world templates for solo, team, and CI/CD setups.

⟐ Claude Code/2026-04-21Intermediate

When Bash Misbehaves in Claude Code on Windows — A Practical Note on CLAUDE_CODE_USE_POWERSHELL_TOOL=1

On Windows, Claude Code's Bash-based shell tool sometimes fails in odd ways. Setting CLAUDE_CODE_USE_POWERSHELL_TOOL=1 routes commands through PowerShell and removes many of the symptoms. Here are the practical trade-offs I've seen after living with the switch.

⟐ Claude Code/2026-04-02Intermediate

Claude Code's PowerShell Tool — Native Windows, No WSL

The one setting that actually enables the Claude Code PowerShell tool, why auto mode's new default leaves Windows users still approving prompts, and what August's three permission changes left standing. With WSL2 trade-offs and unattended-run safety gates.