# Copilot biggest update ever, Devin ARR passes $1B, Claude Code triple feature Date: 2026-09-26 Language: en Canonical: https://code-echo.pages.dev/2026/09/26/ai-twitter-hots-en --- # AI Twitter/X Highlights Digest · 2026-09-26 (Sat) ## Key Takeaways 1. **Microsoft Copilot** calls this its biggest update yet (Autopilot / Code / Home / Office) and ships a product on top of **OpenClaw**. 2. **Claude Code** adds Slack **Tag**, a graceful 5-hour limit stop, and **/checkup prompt-audit**; **Opus 5.5** keeps landing long-horizon port demos. 3. **Codex** briefly goes down; **Cognition** says **Devin** crossed **$1B** ARR run rate; plus **Cline Desktop SSH**, **DeepSeek Harness** plugins, **Zed Delta**, and **Linear** env secrets. --- ## 1. Microsoft Copilot’s big update, built with OpenClaw **Summary**: @satyanadella announced what he called Copilot’s biggest update to date, bundling four pieces: **Autopilot** (a proactive, long-running enterprise agent), **Code** (build apps with Copilot hosted in the company tenant), **Home** (Chat + Cowork), and **Office** fully embedded with Copilot (and vice versa)—plus Teams invocation and **Today**, a proactive M365 surface. The same day, @steipete said Microsoft shipped a compelling product on top of **OpenClaw**; they have partnered since March to harden the codebase for large-scale deployments and called Microsoft a strong partner and open-source contributor. **Why it matters**: The “work OS” story is now explicitly stacking an open-source agent runtime, not just another chat pane. - Copilot update: https://x.com/satyanadella/status/2103455884366188544 - OpenClaw partnership: https://x.com/steipete/status/2103491173927272531 ![Microsoft Copilot OpenClaw](/images/twitter-hots/2026-09-26/01-copilot-openclaw.jpg) --- ## 2. Claude Code: Tag, graceful limits, /checkup **Summary**: @bcherny described Slack **Tag**: it writes more than half of his PRs daily, does nearly all data analysis, and fixes most product feedback and bugs—proactive, programmable, with memory and connectors, now with Opus 5.5 / Fable 5.1. @lydiahallie highlighted a long-requested change: when you hit the **5-hour limit** mid-task, Claude Code tries to find a graceful stopping point instead of cutting off mid-edit. Separately, **/claude-api prompt-audit** is also **/checkup prompt-audit**, auditing CLAUDE.md, skills, and agents for instructions the model no longer needs. **Why it matters**: Coding-agent UX is expanding from raw smarts into always-on workspace agents, quota edges, and config hygiene. - Tag: https://x.com/bcherny/status/2103538666597691552 - Graceful 5-hour stop: https://x.com/lydiahallie/status/2103562429636673635 - /checkup prompt-audit: https://x.com/lydiahallie/status/2103617988918485226 ![Claude Code Tag checkup](/images/twitter-hots/2026-09-26/02-claude-code.jpg) --- ## 3. Opus 5.5: official roundup, ts→Rust, Rust→asm **Summary**: @claudeai posted favorite early Opus 5.5 explorations. @theo said a months-long **ts-rust** port reached ~**35%** tests with GPT‑5.6 Sol and ~**85%** with GPT‑6 Astra before both stalled; Opus 5.5 finished the port in about **10 hours** on a “/goal finish the port and make it faster” and kept grinding performance. @dhh reported a one-shot Opus 5.5 port of Omarchy’s screensaver engine (ttfx) from Rust to **x86-64 assembler**, up to about **17×** faster. **Why it matters**: Long-horizon ports and “drill toward the metal” demos say more about real engineering feel than a single leaderboard tick. - Official roundup: https://x.com/claudeai/status/2103515655760982273 - theo ts-rust: https://x.com/theo/status/2103558185487577476 - dhh Rust→asm: https://x.com/dhh/status/2103595410921279635 ![Opus 5.5 coding](/images/twitter-hots/2026-09-26/03-opus-55.jpg) --- ## 4. Codex outage **Summary**: OpenAI’s @thsottiaux confirmed **Codex** was down and that the team was working to restore service. @theo quote-tweeted that it was down—and that he hadn’t noticed. **Why it matters**: When cloud coding agents become defaults, availability itself becomes part of the product conversation. - Official: https://x.com/thsottiaux/status/2103620061156290622 - Reaction: https://x.com/theo/status/2103621399294493034 ![Codex outage](/images/twitter-hots/2026-09-26/04-codex-outage.jpg) --- ## 5. Cognition: Devin crosses $1B ARR run rate **Summary**: @cognition said it crossed **$1B** in annualized revenue run rate and shared how customers build with **Devin**. Co-founder @walden_yan framed it as zero-to-one in a little under three years. **Why it matters**: An independent coding-agent company is marking a commercial milestone, not just another demo week. - Official: https://x.com/cognition/status/2103500168951955718 - Founder: https://x.com/walden_yan/status/2103530710057549915 ![Cognition Devin ARR](/images/twitter-hots/2026-09-26/05-cognition-devin.jpg) --- ## 6. Switching back to Claude Code from the Codex app **Summary**: @theo asked people who moved back to Claude Code after time on the ChatGPT/Codex app how the switch feels and what they miss—continuing the recent flip-flopping around subscription feel and workflow friction. **Why it matters**: Default tools still move on friction and habit more than on any single benchmark. - Link: https://x.com/theo/status/2103387109537275983 ![Claude Code vs Codex feelings](/images/twitter-hots/2026-09-26/06-claude-vs-codex.jpg) --- ## 7. Cline Desktop: SSH support **Summary**: @cline announced **SSH** in **Cline Desktop**: the app stays on the laptop while Cline works on a dev server, Raspberry Pi, Docker container, or anything else reachable over SSH, with docs and getting-started videos. **Why it matters**: Local desktop agents are productizing the remote half of the loop—the mirror image of ssh’ing into a cloud agent VM. - Link: https://x.com/cline/status/2103537395773911330 ![Cline Desktop SSH](/images/twitter-hots/2026-09-26/07-cline-ssh.jpg) --- ## 8. DeepSeek Harness: ~60% of users run third-party plugins **Summary**: @tianyi said DeepSeek’s official API stats show about **60%** of **DeepSeek Harness** users run at least one third-party plugin; the team will keep supporting the plugin ecosystem, stabilize the plugin API, and avoid breaking changes where possible, while personally recommending strong plugins over the coming days. **Why it matters**: A domestic harness is treating plugins as core UX, not a side niche. - Link: https://x.com/tianyi/status/2103534313463783831 ![DeepSeek Harness plugins](/images/twitter-hots/2026-09-26/08-deepseek-harness.jpg) --- ## 9. Zed Delta vs Codex / Claude Code on Terminal-Bench **Summary**: @zeddotdev said **Delta** matched or beat **Codex** and **Claude Code** on accuracy for every frontier model they ran through **Terminal-Bench**, at about **0.80–1.12×** the cost per pass—then stressed they are not done yet and linked follow-up context. **Why it matters**: Editor-native agents are starting to publish the same terminal-bench comparisons as the leading CLI/app harnesses. - Link: https://x.com/zeddotdev/status/2103512459814305939 ![Zed Delta Terminal-Bench](/images/twitter-hots/2026-09-26/09-zed-delta.jpg) --- ## 10. Linear: env secrets during coding-agent install **Summary**: @linear added secure setup for its coding agent: sessions can access **environment secrets** during **install** to fetch private dependencies and other environment config safely. **Why it matters**: Issue-tracker-native agents are filling in the “can install real private deps” layer, not only editing public code in empty sandboxes. - Link: https://x.com/linear/status/2103501540652966098 ![Linear env secrets](/images/twitter-hots/2026-09-26/10-linear-secrets.jpg)