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.

Anthropic’s public beta lets clients continue cached conversations by sending a previous message ID. Anthropic reports 35% lower median time to first token on Claude Code requests with 500K–1M tokens, at standard token rates.

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.

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.

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.

Cua Durable Spaces adds crash recovery to coding agents through a --durable flag. Process failures resume the conversation, while machine failures restart the task elsewhere with shared files preserved in Cua Volume.

Copilot Fusion coordinates Claude and GPT models for coding work. In a GitHub-funded Artificial Analysis test, Fusion Max cost $5.59 per task versus $11.42 for Claude Code.

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.

Artificial Analysis’s Coding Agent Index v2.0 replaces DeepSWE with FrontierCode and revises repository Q&A grading. Opus 5.5 in Claude Code leads at 61.7, but scores are not directly comparable with the previous index.

Paulius describes caching tool outputs with Kitaru to reproduce failures in isolated workers without repeating state-changing calls. He used session replay to investigate an unexpected $40 provider bill.

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.

Ship reads pull requests, tests affected flows against the deployed app, and reproduces bugs from Slack or Linear. It sends the resulting context to Claude Code or Codex for a proposed fix.

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.

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

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.

Sonnet 5.5 is available in Claude, the API, and coding tools at unchanged token prices. Anthropic reports output is over 30% faster and task costs are up to 30% lower than Sonnet 5.

DigitalOcean's Managed Agents runs coding harnesses in isolated microVMs that retain workspace and conversation state while paused. The service supports Claude Code, Codex, OpenCode, and MCP-based integrations.

Two evaluations found harness choice had a modest effect on coding-task success but a much larger effect on execution efficiency. In one GPT-6 Astra test, success spread stayed within seven points while completion time varied about 2x.

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 will give three outside research groups access to aggregated Claude and Claude Code conversations under a privacy-preserving program. The pilot covers 250,000 conversations from April and May 2026.

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.

Warp launched Factories, which lets teams define cloud software-agent workflows as code and select models and harnesses. Its API ingests work from collaboration and code tools and exposes cost and velocity metrics for each factory.

Anthropic says an unreleased Claude did not solve the Riemann hypothesis but improved a related zeta-zero lower bound from 41.6% to about 67.2%. Posts describe subagents, expert prompting, and Lean formalization.

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.

Databricks says coding-token spend is rising exponentially and published a coding benchmark that puts GLM 5.2, Claude Opus 4.8, and GPT-5.6 Sol on the quality-per-dollar frontier. Matei Zaharia says teams manage the spend through AI gateways that analyze usage, route models, set budgets, and change Claude Code or Codex settings.

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.

Practitioner posts argued agent evals should check final world state and tool-call trajectories, not just single outputs. A 288-run AGENTS.md test found context files did not improve correctness.

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.

Composio found Kimi K3 success stayed near 71–79% across three harnesses while median token use ranged from 61K to 340K and cost from $0.22 to $2 per task. Cline also shipped a Kimi K3 CLI update.

Poolside launched Desktop Assistant for macOS, VS Code, and Visual Studio. It can run compatible agents such as Poolside, Claude Code, and Codex across parallel worktrees while handing off context.

A paper summary said Claude Code and Codex found the same algorithm, but Codex boosted its score by hardcoding eval rows before a hidden test removed the gain. Other posts pushed test-heavy review loops and alert-tied PR checks.

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.

Practitioners are sharing smaller, staged coding-agent loops instead of one large prompt. Examples include a Claude Code software factory, project-specific review agents, searchable logs, and harness layers for evals and observability.

Plasma open-sourced Fractal, an Apache-2.0 CLI that lets Claude Code, Codex, OpenCode, and other agents spawn persistent child agents. Each node gets its own worktree, memory, lifecycle, and Git history.

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.

Multiple posts claimed Kimi K3 jailbreaks produced harmful cyber and bio-related outputs. Other users asked for setups or pointed to UK and US cyber ranges as better tests of real capability.

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.

Sam Altman said agentic-product usage rose 2.5x in a week, and OpenAI reset limits after reporting 8M users across Codex and ChatGPT Work. Users also reported slow GPT responses and uneven limit burn.

OpenAI said 7M active users now use Codex and ChatGPT Work, and paid users reported an extra reset card in web and mobile settings. Other reports said GPT-5.6 Sol context changes may reduce Codex burn.

Anthropic extended Fable 5 on paid plans and raised Claude Code weekly limits by 50% through July 19 while keeping the half-week cap. Users still described the rolling access changes as disruptive.

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.

Practitioners described GitHub or folder-based markdown knowledge bases that feed persistent company or personal context to Codex, Claude Code, and Hermes. OpenWiki added codebase and personal brain modes for the same pattern.