Claude Code

Theo's request logs suggest a $200 Ultra plan provides about $3,000 in API-equivalent Fable 5.2 usage versus $15,000 for Opus. He also reports Fable is capped at half the weekly allowance.

Karpathy says he built HackerTube in about two hours with Claude Code. Regex and spam filters narrowed 43 million Hacker News comments before Sonnet processing; the recommendation dataset is available for reuse.

Cursor says a tampered, unofficial Claude Code extension affected at most 5,000 users. The company temporarily closed its marketplace, worked with providers to neutralize the malware and published mitigation instructions.

New LFM2.5-24B LoRA adapters target Pi and Claude Code, with GGUF weights available. The author reports up to 40% fewer Pi tool calls, but no meaningful improvement for the Claude Code variant.

Theo reports that Claude Agents SDK usage consumes five-hour limits faster than Claude Code usage, without affecting weekly limits. He says CLIProxy's added TUI header avoids the bug while a fix is being coordinated.

OpenRouter’s Armor beta uses Jev to check tool calls against rules and user intent before execution. Agents can enable it as a plugin, including for Claude Code auto permissions with other models.

Release walkthroughs describe a Claude Code Desktop hub for parallel sessions with saved environments and isolated Git worktrees. Nested tasks, live statuses and recap cards help track work across sessions.

Claude Code users report unusually high quota consumption. Boris Cherny says Anthropic made no changes, asks users to share /usage output, and suggests disabling the up-coder plugin to test its impact.

Daniel Mac shared a script to compare Claude Code subagent cache lifetimes, then reverted to five minutes after finding no savings for his workload. He also corrected the hour-long setting from 60 to 1h.

A Claude Code Mods walkthrough says plugins retain state and run with the user's permissions. Its examples show JavaScript or TypeScript mods drawing UI, rewriting prompts and intercepting tool calls.

Claude Code 2.1.289 fixes file references and symlinks bypassing Read deny rules. It also addresses managed approval issues and adds teammate agent spawning.

Kevin Kern uses Opus 5.5 for orchestration and UI work, with GPT-6.1 Sol handling delegated coding. The shared setup combines native Claude Code and the Codex app server, with a view of spawned GPT workers.

Claude Code Mods let JavaScript or TypeScript plugins replace agent behavior, inspect session events, spawn subagents, and change the UI. Practitioners have shared a mod-building skill and hot-reload workflows.

Anthropic released Claude Opus 5.5 at $4 per million input tokens and $20 per million output tokens, below Opus 5 pricing. Cached-input reads now cost $0.20 per million tokens, and Claude Opus 5.5 is the default in Claude Code.

Anthropic released blueprints and reference implementations for shopping and merchant agents in four verticals. The package includes a Claude Code plugin for building an agent against a backend.

Claude Code says its temporary 50% weekly-limit increase will become a permanent 25% increase over standard limits on September 14. The weekly limit will be 17% below the current cap, while the five-hour limit remains unchanged.

Anthropic says a test serving configuration mapped Claude Code’s numeric effort settings differently, allowing “high” to display as 10. The company says evaluations found no regression and the underlying models were unchanged.

Claude Security's public beta now uses Mythos 5 to scan GitHub repositories for enterprise customers. Findings include CWE labels, severity, confidence, and suggested patches that can open in Claude Code on the web.

Anthropic engineers said Claude Code is slated to add model training, probes, and auto-mode layers by default next week. They said Claude models now largely resist practical prompt injection.

Relay opened its people-and-agents messenger as new tools made cross-session agent messaging more concrete. Pi highlighted pi-intercom handoffs, and grapevine coordinates Claude Code sessions around touched files.

Anthropic says Claude Code auto mode becomes the default for Pro, Max, and Team users on August 14. Its tool-call classifier caught 89% of dangerous commands in a 1,053-tester study, versus 14% for manual approval.

Claude Code users reported Fable 5 and Opus 5 sessions exhausting five-hour usage windows in about 6–10 minutes after automated tool calls. The reports tie the failures to agent loops and rate-limit economics, including one Reddit claim of 10.26M tokens, 15 calls, and no edits.

Anthropic said Claude Code cut more than 80% of its system prompt without hurting coding evals. Other workflows use filesystem research folders, session IDs, wiki memory, and composable memory APIs to keep context durable.

A reported study found Claude Code and Codex resisted credential exfiltration but could store rules that later triggered unauthorized tools. Related memory work warns personal memories can raise hallucinations and RAM pressure.

Anthropic said it resolved an issue that made Fable 5 unavailable in claude.ai and Claude Code after users reported lost access or credit prompts. ClaudeDevs said affected extra-usage customers would receive refunds plus matching credits.

OpenAI says GPT-5.6 deletion reports usually involved full-access Codex runs without sandboxing and a temporary $HOME override. Claude Code 2.1.212 also added loop caps and safety fixes.

Reddit users reported Claude Code subagents hanging while burning quota, inconsistent usage meters, oversized contexts, slow desktop output, and a verify skill consuming a full limit. The common issue was unreliable usage accounting.

A Fable maintainer set the Claude subscription cutoff for 11:59:59pm PT on July 7 as users posted high Claude Code credit usage. One estimate claimed about $2,267 of usage across two $200 accounts in six days.

One Claude Code user parsed 95 sessions and estimated subagent prompt caching made total spend about 8% high. pxpipe separately rendered dense text as images to cut context cost, with exactness tradeoffs.

Claude Code 2.1.200 changed Manual permission defaults and fixed background-agent crash and recovery paths; 2.1.201 removed mid-conversation Sonnet 5 harness reminders. Update to reduce accidental advances and repeated reminders in stalled sessions.

Anthropic shipped Claude Code 2.1.198 with Claude in Chrome, background agents that auto-commit and open draft PRs, and a new eval command with ablation and judge-model options. The release also adds AWS upstream failover and retries transient mid-response network drops instead of aborting turns.

Anthropic launched Claude Sonnet 5 across Claude, the API, and Claude Code with 1M context, adaptive thinking, and $2/$10 intro pricing through Aug. 31. Independent evals place it near Opus 4.8 on coding and tool use, so teams should benchmark it against Opus before switching.

The US Commerce Department removed export controls on Fable 5 and Mythos 5, and Anthropic said access starts returning July 1. Fable counts against up to 50% of weekly limits through July 7 before moving to usage credits, so users should check their quota behavior and fallback paths.

After reports that Claude Code was inserting hidden prompt marks when routed through custom ANTHROPIC_BASE_URL gateways, an Anthropic engineer said the experiment was real and is being rolled back. The issue matters for teams proxying Claude Code through gateways because prompt mutation on custom routes creates trust and debugging problems even if the effect was narrow.

Anthropic opened a Claude Desktop beta for Ubuntu and Debian that bundles chat, Claude Code, and Claude Cowork in a native Linux app. It gives Linux users a first-party desktop path into Claude workflows, though Computer Use is still missing from this release.

Claude Code 2.1.196 adds org-level default model selection, readable default session names, clickable file attachments, and stops mcp list/get from auto-starting repo-local servers before approval. The release tightens workspace trust while smoothing several day-to-day CLI workflows.

After Bedrock cards, Claude Code strings, and app pickers suggested a return, Anthropic said Fable 5 was serving zero traffic and the sightings were a UI bug. That leaves visible IDs and client strings, but no production model access to route against.

Claude Code 2.1.193 routes all shell commands through auto-mode classification, adds live file path autocomplete in bash mode, and can emit assistant-response OpenTelemetry events. It also changes denial logging and response-logging defaults for teams instrumenting the CLI.

Claude Code 2.1.191 introduced /rewind, made stopped background agents stay stopped, and cut streaming CPU use by about 37%. The update changes session recovery and long-running task control, so migrate to the new workflow if you rely on background agents.

Claude Tag puts Claude into Slack as a teammate that can handle threads, use approved tools, and follow up proactively in selected channels. Team and Enterprise users can try it in beta to keep shared channel context instead of restarting from private chats.

Claude Code 2.1.187 adds sandbox.credentials to block credential and secret-env access from sandboxed commands and aborts remote MCP calls after five minutes. It also adds org model restrictions and fixes structured-output retry loops.

Claude Code 2.1.186 adds CLI-based MCP auth, automatic assistant replies after ! shell commands, and tighter named-subagent permission checks. The update cuts interactive setup for remote MCP servers and tightens policy-heavy agent workflows.

Claude Code 2.1.185 changes the stall hint to say Waiting for API response and delays the retry notice until 20 seconds of silence. The update targets an API wait edge case without changing prompts or tool permissions.

Claude Code can now turn a live session into a private artifact page for PR walkthroughs, debug timelines, dashboards, and architecture notes. Team and Enterprise users get a persistent review surface that refreshes as the session changes.

Anthropic shipped Claude Code 2.1.183 with a new safety block on destructive git and infra-destroy commands plus an attribution setting to remove session URLs from commits and PRs. The release also fixes silent-thinking 400s, WebSearch in subagents, and TUI cursor corruption, which matters for longer automated coding sessions.

Claude Code 2.1.181 ships inline /config changes, a presence-file environment variable to suppress mobile push notifications while a machine is active, and Apple Events sandbox opt-in on macOS. It also fixes prompt caching on custom base URLs and truncation on network drives, affecting day-to-day remote and multi-machine use.

Anthropic updated Claude Design with design-system imports from repos, codebases, or design files, plus bidirectional sync with Claude Code and a canvas editor. The update moves it from generic mockups toward designs checked against real components.

Anthropic published data from 400,000 Claude Code sessions, finding average task value rose 27% and verifiable success across occupations stayed within seven points of software engineering. The report gives teams a concrete baseline for where coding agents already generalize and where domain expertise still changes outcomes.

Anthropic paused a same-day policy change that would have moved Claude Agent SDK, claude -p, and third-party SDK apps onto separate monthly credits. Existing subscription-backed workflows continue unchanged for now, but teams should watch for the redesigned billing plan.

Claude Code 2.1.178 added parameter-aware permission rules such as Agent(model:opus) and now runs classifier checks before auto mode spawns subagents. The release also fixes OAuth, skills, transcript, and background subagent issues, so update if you rely on those flows.