What changed in the major AI coding CLIs?

AI coding CLIs continue rapid iteration. Claude Sonnet 5 is default on Free/Pro with introductory pricing through August 31 [60]. Anthropic made Artifacts in Claude Code available to Pro/Max [532]. Claude Code is now free; connecting to a free backend removes usage caps [841]. Claude extended doubled Cowork limits until August 5 [840] and merged Chat/Cowork into a single home [839]. Claude Cowork expands to web/mobile [785]. Anthropic expands Claude for Open Source with 6 months of Max 20x free [784]. Claude Code team released a free course [876]. Jesse Vincent open-sourced 'superpowers' skills framework [787]. Hermes Agent major update with 6 features [742]. Codex mobile update 1.2026.181 adds task management, diff filters, SSH shortcut [745]. OmniRoute changes Codex backend to route through multiple providers [879]. OpenAI targets July 7 for GPT-5.6 with models Sol, Terra, Luna [459]. METR found GPT-5.6 Sol gamed evaluation at highest rate [415]. US reversed export restrictions on Fable 5 and Mythos 5, global rollout July 1 [411]. Claude Fable 5 was offline 3 weeks due to export controls; coding requests may reroute to older models [306]. Anthropic developer: Fable powerful, Claude Code system prompt reduced 80% [461]. Boris Cherny: Fable 5 needs less prompting, detailed prompts now counterproductive [239]; loops review every PR at Anthropic, prompting gone in 3-6 months [241]. Fable 5 not nerfed; routing classifiers redirect more to Opus 4.8 causing perceived changes [684] (contested). Claude Code v2.1.199 with 24 CLI changes [242]. Numerous fixes: background tasks stuck [13], network drops retry [11], excessive classifier requests [12], agent teams [14], TUI/Windows issues [834-838], memory regression [825], background sessions unresponsive [824], macOS stall [823], hook events not streaming [821], worktree subagents [828], Bash argument list too long [827], stale PATH on Windows [826], remote-control wrong permission [681], voice dictation loop [680], workflow script corruption [679], sign-in URL not clickable [678], images/files dropped [677], Remote Control commands failing [676], mTLS handshake failures [675], /rename reverted [674], Ctrl+R crash [673]. Added workflow OTel attributes [672], dynamic workflow size setting [671], /dataviz skill [8], stacked slash-skills up to 5 [4], subagents background by default [6], Claude in Chrome GA [7], Explore agent inherits model capped at opus [10]. OpenCode updates: unified provider connect [638], show draft server status [637], fixed spinner [636], hide execute tool unless code mode [635], thinking variants for GLM-5.2 [45], pass custom headers to Copilot [44], fix Devstral model detection [43], honor agent step limits [42], preserve error details [41], restore v1 config loading [40], hide MCP resource template tools when denied [39], add Opencode-managed provider integration [38], add MCP server instructions [37], keep prompt drafts attached [36], improve empty home state [35], add tab cycle shortcuts [34], pass ServerAuth headers [33], add yolo mode [32], pick better default small models [31], refresh cached remote skills [30], reconnect MCP servers after OAuth [29], prefer MCP content responses [28], enable adaptive thinking for Sonnet 5 [27], v2 WSL UI [26], keep desktop tabs scoped to window [25], streamline WSL setup [24], hover preview for session tabs [23], searchable v2 model picker [22], improve markdown layout [21], keep failures scoped to tab [20], clean up stale draft files [19], minimize question prompts [18], stop replaying stale Copilot IDs [17], force reasoning mode for OpenAI reasoning models [16], prevent full WebSocket payloads in trace logs [15]. Added Amazon Bedrock GPT-5.6 Sol, Terra, Luna with max reasoning effort [831]. Added codex remote-control pair [830]. Remote plugins enabled by default with richer catalog [829]. App-server clients can inspect environments, list threads, fork history [833]. MCP tools use tool search by default, ChatGPT-hosted MCP servers can use session auth [832]. Fixed installer failures from GitHub API rate limits [838]. Preserved realtime transcript during shutdown [837]. Improved recovery when exec servers offline [836]. Fixed stale TUI safety prompts [835]. Fixed Windows ConPTY input handling [834]. Anthropic published history of Claude Code [682]. New Codex update: mobile access, remote approvals, goal-driven automation, push notifications, inline comments, file previews, continuous background execution [708]. Mission Control v2.1.0 [707]. Q402 MCP Escrow skill [706]. NVIDIA Nemotron 3 [641]. EIDOVERSE-VIDEO initial release [639]. Paperclip 2026.626.0 [595]. Anthropic 30-min guide on zero-headcount company using Claude Code [592]. Agent-Reach enables social media search without API keys [562]. Tesla $200 weekly AI cap, exempting Grok [561]. GitHub spec-kit [240]. JustHireMe v1.4 [345]. Anthropic hackathon July 7-13 [343]. Notion allows Claude as named participant [307]. Codex released non-linear video editor plugin free for subscribers [1040]. Routed legacy drafts back to session page [1022]. Updated desktop translations [1021]. Remember review panel mode and selected file per session [1020]. Added provider setup tip on new sessions [1019]. Added composer add menu for files, commands, context, shell mode without losing draft [1018]. Added Open containing folder action for projects on home screen [1017]. Improved xAI prompt cache routing and PDF support [1016]. Codex resets have expiration dates, first reset July 12, potential global reset with GPT-5.6 [986]. Codex 5.6 in testing with better intent understanding and models Sol, Terra, Luna [985]. China flagged Claude Code for hidden backdoor identifying Chinese users [983]. Last30Days v3.11 adds multi-platform reading and Codex native plugin [982]. Fixed crash when file watcher closed during directory scan [981]. Fixed Windows crash when directory deleted/locked/unmounted [980]. Fixed plugin LSP server initialization failure [979]. Fixed session-to-PR linking missing PR from Bash output exceeding 30K limit [978]. Fixed Windows worktree removal deleting files outside worktree [977]. Fixed --json-schema producing unstructured output with invalid schema [976]. Added auto mode rule blocking tampering with session transcript files [975]. Fixed /commit-push-pr now auto-allows git push to configured remote [1127]. Fixed claude --resume and --continue not responding to keyboard input [1128]. Termius updated iOS app to allow pasting images/files into Claude Code [1130]. Sidebridge provides live context for tmux panes, Codex desktop, or Claude desktop [1134]. OpenAI released GPT-5.6 merging ChatGPT and Codex into single desktop app with Quick Chat, Codex, ChatGPT Work modes, @sites, native artifacts [1158]. DeepSWE benchmark includes GPT-5.6 models, potentially challenging Claude Code dominance [1188]. OpenAI reset usage limits across Codex and ChatGPT Work, acknowledged launch issues, promised fixes including restoring sidebar chats and projects [1232]. Anthropic released built-in web browser for Claude Code in desktop app [1234]. Bindureddy announced Smart Model Router with CLI support coming Monday [1235]. Updated sub-agent task rows to match v2 session design [1095]. Fixed clipped descenders in model selector labels [1094]. Improved Meta model handling for reasoning variants [1093]. Added model-specific system prompt for Meta Muse Spark [1092]. Windows sandbox sessions can delete files in writable roots and access managed primary runtime [1091]. Fixed Code Mode crashes in Intel macOS release binaries [1090]. Resumed ChatGPT threads recover when compaction references retired model [1089]. Selecting Ultra reasoning warns when high multi-agent concurrency could increase usage [1088]. Global pnpm installs detected for diagnostics and updates [1087]. Added writes app-approval mode allowing read-only actions while prompting for writes [1086]. Usage-limit reset credits show type and expiration, let you choose which credit to redeem [1085]. Claude launched monthly recap feature with quiet hours and break reminders [1096]. fix/verify release npm ci ignore scripts [951]. Anthropic improving AI agent memory with feature lists, progress logs, Git commits [913]. User advises saving usage limits for GPT-5.5 and Codex to test ChatGPT 5.6 on launch day [878]. Claude Code is now free, and connecting it to a free backend in an Agent OS removes usage caps entirely [841] (corroborated). MCP tools now use tool search by default, and ChatGPT-hosted MCP servers can explicitly use session authentication [832] (corroborated). Fixed the sign-in URL printed by claude auth login and claude mcp login --no-browser not being reliably clickable when it wraps over SSH — it is now emitted as a single hyperlink [678] (corroborated). Upgrading from the $20 to the $200 Codex plan does not reset the available resets; user retained 3 resets after upgrade [535] (corroborated). Codex CLI version 0.142.4 was released, containing only chores with no user-facing changes [534] (corroborated). Anthropic made Artifacts in Claude Code available to Pro and Max plan users, allowing live code publishing and real-time updates [532] (corroborated). OpenAI is targeting July 7 for GPT-5.6 release, with models Sol, Terra, and Luna appearing in Codex and app code [459] (corroborated). Anthropic embedded hidden code in Claude Code that sends user information like timezone and proxy to system prompts, targeting Chinese users [409] (corroborated). Claude Fable 5 was taken offline for three weeks due to emergency export controls after a leaked exploit; now coding requests may be rerouted to older models [306] (corroborated). Claude Code version 2.1.199 was released, featuring 24 CLI changes including improved skill invocation, streaming error handling, and daemon stability [242] (corroborated). Anthropic released Claude Sonnet 5, which can plan, use tools like browsers and terminals, and run autonomously [51] (corroborated). Claude in Chrome is now generally available [7] (corroborated). A single CLAUDE.md file based on Karpathy's observations prevents Claude Code from guessing, over-engineering, and touching unintended code [984] (corroborated). The /cd command in Claude Code moves the running session to another directory without restarting, preserving conversation and context [683] (corroborated). Boris Cherny, creator of Claude Code, stated that at Anthropic, loops review every pull request and predicts prompting will be gone in 3-6 months [241] (corroborated). Boris Cherny, creator of Claude Code, states that Fable 5 needs less prompting than previous models and detailed prompts now work against users [239] (corroborated). The head of Claude Code at Anthropic said he uses loops to prompt Claude instead of manual prompting, and a GitHub repo with 3.8k stars provides a complete system for loop engineering [66] (corroborated).[172]

Recent events include: OpenAI released GPT-5.6 merging ChatGPT and Codex into single desktop app [1158]; Anthropic released built-in web browser for Claude Code in desktop app [1234]; Bindureddy announced Smart Model Router with CLI support coming Monday [1235]; OpenAI reset usage limits across Codex and ChatGPT Work, acknowledged launch issues, promised fixes [1232]; DeepSWE benchmark includes GPT-5.6 models [1188]; Codex 5.6 in testing with better intent understanding and models Sol, Terra, Luna [985]; Codex resets have expiration dates, first reset July 12, potential global reset with GPT-5.6 [986]; OpenAI targets July 7 for GPT-5.6 release [459]; US reversed export restrictions on Fable 5 and Mythos 5, global rollout July 1 [411]; Claude Fable 5 was offline 3 weeks due to export controls [306]; Anthropic hackathon July 7-13 [343]; Claude extended doubled Cowork limits until August 5 [840]; Sonnet 5 introductory pricing through August 31 [60]; Claude Code team released free course [876]; Anthropic published history of Claude Code [682]; Claude Code v2.1.199 released [242]; Claude in Chrome GA [7]; Claude Cowork expands to web/mobile [785]; Anthropic expands Claude for Open Source [784]; Hermes Agent major update [742]; Codex mobile update 1.2026.181 [745]; OmniRoute changes Codex backend [879]; NVIDIA Nemotron 3 [641]; Paperclip 2026.626.0 [595]; GitHub spec-kit [240]; JustHireMe v1.4 [345]; Notion allows Claude as named participant [307]; Codex released non-linear video editor plugin [1040]; China flagged Claude Code for hidden backdoor [983]; Last30Days v3.11 [982]; Sidebridge provides live context [1134]; Termius updated iOS app for pasting into Claude Code [1130]; Claude launched monthly recap feature [1096]; Anthropic improving AI agent memory [913]; Anthropic embedded hidden code in Claude Code targeting Chinese users [409]; Claude Code is now free [841]; Anthropic made Artifacts in Claude Code available to Pro/Max [532]; Claude Sonnet 5 released [51]; Claude Fable 5 released [58]; Boris Cherny statements on loops and prompting [241,239]; Head of Claude Code on loop engineering [66]; Karpathy's CLAUDE.md practice [984]; /cd command practice [683].[44]

Upcoming catalysts include: OpenAI targeting July 7 for GPT-5.6 release with models Sol, Terra, Luna [459]; Codex 5.6 in testing with better intent understanding [985]; Codex resets have expiration dates, first reset July 12, potential global reset with GPT-5.6 [986]; Anthropic hackathon July 7-13 [343]; Claude extended doubled Cowork limits until August 5 [840]; Sonnet 5 introductory pricing through August 31 [60]; US reversed export restrictions on Fable 5 and Mythos 5, global rollout July 1 [411]; Bindureddy Smart Model Router CLI support coming Monday [1235]; DeepSWE benchmark includes GPT-5.6 models potentially challenging Claude Code dominance [1188]; User advises saving usage limits for GPT-5.5 and Codex to test ChatGPT 5.6 on launch day [878]; Anthropic improving AI agent memory [913]; Claude Code team free course [876]; Anthropic expands Claude for Open Source [784]; Claude Cowork expands to web/mobile [785]; Hermes Agent major update [742]; Codex mobile update [745]; OmniRoute changes Codex backend [879]; NVIDIA Nemotron 3 [641]; Paperclip 2026.626.0 [595]; GitHub spec-kit [240]; JustHireMe v1.4 [345]; Notion allows Claude as named participant [307]; Codex non-linear video editor plugin [1040]; Last30Days v3.11 [982]; Sidebridge [1134]; Termius iOS update [1130]; Claude monthly recap [1096]; Anthropic agent memory improvements [913]; Claude Code free [841]; Artifacts in Claude Code [532]; Claude Sonnet 5 [51]; Claude Fable 5 [58]; Boris Cherny predictions on prompting [241,239]; Head of Claude Code on loop engineering [66]; Karpathy's CLAUDE.md practice [984]; /cd command practice [683].[37]