Image created with gemini-3.1-flash-image-preview with claude-sonnet-4-5. Image prompt: Using the provided reference image, preserve the exact square faceted perfume bottle with warm amber liquid, crystal stopper, pure white background, soft shadow, and high-fashion studio lighting with glass refractions. Replace the label text with ‘Anthropic’ in the same clean black serif font. Add a delicate sterling silver chain draped naturally around the bottle neck with a small dainty pendant: a miniature rolled parchment scroll in sterling silver with fine ribbon detail, kept tiny and refined like high-end jewelry.
Claude Dispatch and the Power of Interfaces
https://www.oneusefulthing.org/p/claude-dispatch-and-the-power-of
Computer use in Claude Code is a huge unlock. The biggest bottleneck in AI coding is it can’t “see” what it built. Computer use gives Claude Code eyes. It can now run this closed loop: “write the code, compile it, launch the app, click through it, find the bug, fix it, and
https://x.com/Yuchenj_UW/status/2038671697923223999
Computer use is now in Claude Code. Claude can open your apps, click through your UI, and test what it built, right from the CLI. Now in research preview on Pro and Max plans.
https://x.com/claudeai/status/2038663014098899416
Did they just turn on the claude code pets?
https://x.com/meowbooksj/status/2039256157781410298
Fortune: “”Anthropic says: Capybara is a new name for a new tier of model: larger and more intelligent than our Opus model”” “”Compared to our previous best model, Claude Opus 4.6, Capybara gets dramatically higher scores on tests of software coding, academic reasoning, and
https://x.com/scaling01/status/2037379145806524655
I like how the Anthropic Claude Code team is being chill about the code leak. What’s leaked is leaked. 70k forks, Python & Rust versions on GitHub, there’s no way back. One thing is clear from reading the code: harness engineering is hard and deeply non-trivial. I think more
https://x.com/Yuchenj_UW/status/2039191313749524518
I wanted to share a bunch of my favorite hidden and under-utilized features in Claude Code. I’ll focus on the ones I use the most. Here goes.
https://x.com/bcherny/status/2038454336355999749
Let Claude use your computer from the CLI – Claude Code Docs
https://code.claude.com/docs/en/computer-use
new claude code buddy feature is kinda cute
https://x.com/eliebakouch/status/2039176958416720104
Schedule tasks on the web – Claude Code Docs
https://code.claude.com/docs/en/web-scheduled-tasks
The biggest bottleneck in AI for most people isn’t the models. It’s the chatbot. New interfaces like Claude Dispatch, are closing the gap between what AI can do and what people can actually use it for. For many folks, that is where leaps will come from.
https://x.com/emollick/status/2039109996097491153
There’s an AI pet lurking in Claude Code!
https://x.com/dbreunig/status/2039017351061143780
New Anthropic research: Emotion concepts and their function in a large language model. All LLMs sometimes act like they have emotions. But why? We found internal representations of emotion concepts that can drive Claude’s behavior, sometimes in surprising ways.
https://x.com/AnthropicAI/status/2039749628737019925
🚀 Imagine running Claude 4.6 Opus-level reasoning… but entirely on your own GPU with just 16GB VRAM. This 27B Qwen3.5 variant, distilled on Claude 4.6 Opus reasoning traces, delivers frontier coding power locally. It’s beating Claude Sonnet 4.5 on SWE-bench in 4-bit
https://x.com/outsource_/status/2038999111039357302
This model has been #1 trending for 3 weeks now. It’s Qwen3.5-27B fine-tuned on distilled data from Claude-4.6-Opus (reasoning). Trained via Unsloth. Runs locally on 16GB in 4-bit or 32GB in 8-bit. Model:
https://x.com/UnslothAI/status/2038625148354679270
Very bullish on open source and local models Imagine running near-Opus-level model locally on that $600, 16GB Mac Mini you bought last month This 27B Qwen3.5 distill was trained on Claude 4.6 Opus reasoning traces and is putting up real numbers: – beats Claude Sonnet 4.5 on
https://x.com/TheCraigHewitt/status/2039303217620627604
> Anthropic leaked Claude Code source code > someone forked it > 32.6k stars, 44.3k forks > got scared of getting sued > convert the whole codebase from TypeScript to Python with Codex AI is quietly erasing copyright.
https://x.com/Yuchenj_UW/status/2038996920845430815
🧵 Claude Code source leak — After reading 500K+ lines of code, one takeaway stands out: This isn’t just good engineering. It’s research-grade thinking shipped as a product Deep insights from Zhihu contributor Yufeng He 👇 🧠 Core design • A single while(true) loop = the
https://x.com/ZhihuFrontier/status/2039229986339688581
🚨 Anthropic’s Claude Code Source Leak — What It Actually Exposes A careless build mistake just laid bare one of the most advanced AI coding tools — and the lessons are huge. Insights from Zhihu contributor deephub 👇 🏢 About Anthropic Anthropic is a leading AI safety-focused
https://x.com/ZhihuFrontier/status/2039289110075203854
0xMarioNawfal on X: “The leaked Claude Code source has 44 hidden feature flags and 20+ unshipped features. – Background agents running 24/7 – One Claude orchestrating multiple worker Claudes – Cron scheduling for agents – Full voice command mode – Actual browser control via Playwright – Agents that https://t.co/IkU0WzP0VO” / X
https://x.com/RoundtableSpace/status/2038960753458438156?s=20
Anthropic’s new model, Capybara: “Compared to Claude Opus 4.6, Capybara achieves dramatically higher scores in software coding, academic reasoning, and cybersecurity.” According to Dario’s previous interview, it might be a 10T-parameter model that cost $10 billion to train.
https://x.com/Yuchenj_UW/status/2037387996694200509
Beyond raw model capability, the real gap in coding tools is the harness. Now that 500k+ lines of Claude Code are out there, every model lab and AI coding startup, including open-source AI labs, will study it and close that gap fast. SF already has Claude Code source
https://x.com/Yuchenj_UW/status/2039029676040220682
Claude Code leaked their source map, effectively giving you a look into the codebase. I immediately went for the one thing that mattered: spinner verbs There are 187
https://x.com/wesbos/status/2038958747200962952?s=20
Claude code source code has been leaked via a map file in their npm registry! Code:
https://x.com/Fried_rice/status/2038894956459290963?s=20
Claude Code’s source code appears to have leaked: here’s what we know | VentureBeat
https://venturebeat.com/technology/claude-codes-source-code-appears-to-have-leaked-heres-what-we-know
Claude Code’s source code has been leaked via a map file in their NPM registry | Hacker News
https://news.ycombinator.com/item?id=47584540
dharmi on X: “incredible to learn more about how the best coding agent works under the hood eg: here is how the plan mode in claude code works https://t.co/qd16GCVjau” / X
https://x.com/DharmiKumbhani/status/2038917827462308308?s=20
DMCAs for Claude code source code are going out.
https://x.com/BlancheMinerva/status/2039114452088295821
ellen livia ᯅ 🇺🇸🇮🇩🔜 ICIAI Tokyo on X: “here’s how Claude Code actually handles memory : all 8 phases 🧵 Our team at @mem0ai use @claudeai a lot, we deeply care about memory. here is a summary of how it works 👇 User Input -> Context Assembly -> History System -> API / Query -> Response -> Summary Phase 1: session https://t.co/hcZbJzbUxB” / X
https://x.com/ellen_in_sf/status/2039098050837463504
fakeguru on X: “I reverse-engineered Claude Code’s leaked source against billions of tokens of my own agent logs. Turns out Anthropic is aware of CC hallucination/laziness, and the fixes are gated to employees only. Here’s the report and CLAUDE.md you need to bypass employee verification:👇 https://t.co/h8KQESUz1i” / X
https://x.com/iamfakeguru/status/2038965567269249484?s=20
himanshu on X: “Based on everything explored in the source code, here’s the full technical recipe behind Claude Code’s memory architecture: [shared by claude code] Claude Code’s memory system is actually insanely well-designed. It isn’t like “store everything” but constrained, structured and https://t.co/PlGRvuvkts” / X
https://x.com/himanshustwts/status/2038924027411222533?s=20
https://pbs.twimg.com/media/HEuwvh_bgAE1xnL?format=jpg&name=large
Justin Schroeder on X: “Important takeaways from Claude’s source code: 1. Much of Claude Code’s system prompting is in the source code. This is actually surprising. (get full post)
https://x.com/jpschroeder/status/2038960058499768427
Leon Lin on X: “IT WORKED. opensource full claude code soon. https://t.co/6TJ2IBgRzq” / X
https://x.com/LexnLin/status/2038991257582604618?s=20
mal on X: “i read through the claude code source code so u dont have to. ” / X
https://x.com/mal_shaik/status/2038918662489510273
most interesting features in the Anthropic CC repo: – Kairos: always-on autonomous agent mode – dream: nightly memory consolidation – teammem: shared project memory – buddy: tamagotchi-like pet system with models
https://x.com/scaling01/status/2038982287648293016
My takeaways from scanning the Claude Code code for ~45 min this evening: 1️⃣Harness engineering is hard. There’s a lot of hard won knowledge in here and plenty of diagnostics to keep the feedback flowing. 2️⃣Harnesses and prompts smooth out model quirks. @SrihariSriraman and I
https://x.com/dbreunig/status/2039206774558036466
OFFICIAL STATEMENT from Anthropic regarding the leak
https://x.com/theo/status/2039074833334689987
Ole Lehmann on X: “i can’t believe more people aren’t talking about this part of the claude code leak there’s a hidden feature in the source code called KAIROS, and it basically shows you anthropic’s endgame KAIROS is an always-on, *proactive* Claude that does things without you asking it to.
https://x.com/itsolelehmann/status/2039018963611627545?s=20
rahat on X: “Claude Code has a regex that detects “wtf”, “ffs”, “piece of shit”, “fuck you”, “this sucks” etc. It doesn’t change behavior…it just silently logs is_negative: true to analytics. Anthropic is tracking how often you rage at your AI Do with this information what you will https://t.co/dJTfwxYMCV” / X
https://x.com/Rahatcodes/status/2038995503141065145?s=20
Sebastian Raschka on X: “Claude Code’s Real Secret Sauce (Probably) Isn’t the Model” / X
https://x.com/rasbt/status/2038980345316413862?s=20
The leaked Claude Code hit 110k+ GitHub stars in a day. Made OpenClaw look slow. #1 open-source project in Anthropic history.
https://x.com/Yuchenj_UW/status/2039415430994100440
What surprises me is that @DarioAmodei – the CEO – has said nothing. Boris seems to be an amazing leader and it’s great to hear these words from him. But…
https://x.com/TheTuringPost/status/2039390822093779258
A few take-aways from the Claude Code Leak: – Anthropic is actively using Capybara (Mythos) for development – they are already at Capybara v8 – Capybara still has issues with over-commenting and false-claims – Capybara has 1M context and fast mode – Numbat is another interesting
https://x.com/scaling01/status/2038948989257630166?s=20
Another Claude 5 update: Anthropic’s upcoming Model “”Mythos”” will have its own Tier *above* Opus, called “”Capybara”” This means that in addition to Haikiu, Sonnet, and Opus, there will also be “”Capybara,”” which is even more compute-intensive but also delivers significantly better
https://x.com/kimmonismus/status/2037463638261305752
Anthropic’s new model Capybara/Mythos just wants to be human
https://x.com/scaling01/status/2039091546377576864
Claude Mythos Blog Post Saved before it was taken down.
https://x.com/M1Astra/status/2037377109472018444
Exclusive: Anthropic ‘Mythos’ AI model representing ‘step change’ in power revealed in data leak | Fortune
https://fortune.com/2026/03/26/anthropic-says-testing-mythos-powerful-new-ai-model-after-data-leak-reveals-its-existence-step-change-in-capabilities/
Local Claude Code builds have been achieved internally
https://x.com/theo/status/2039079267905261831
These functional emotions have real consequences. To build AI systems we can trust, we may need to think carefully about the psychology of the characters they enact, and ensure they remain stable in difficult situations. Read the full paper:
https://x.com/AnthropicAI/status/2039749660349239532
Anthropic on X: “We studied one of our recent models and found that it draws on emotion concepts learned from human text to inhabit its role as “Claude, the AI Assistant”. These representations influence its behavior the way emotions might influence a human.
https://x.com/AnthropicAI/status/2039749632238944336
Emotion concepts and their function in a large language model \ Anthropic
https://www.anthropic.com/research/emotion-concepts-function
Computer use now available in Claude Code. Waited a long time for this.
https://x.com/omarsar0/status/2038668801256968381
Anthropic Wins Injunction in Court Battle With Trump Administration – WSJ
https://www.wsj.com/politics/policy/anthropic-wins-injunction-in-court-battle-with-trump-administration-4cc93351
We’ve signed an MOU with the Australian Government to collaborate on AI safety research and support Australia’s National AI Plan. Read more:
https://x.com/AnthropicAI/status/2039137425214353555
GOOGLE IS CLOSE TO STRIKING A DEAL TO FUND ANTHROPIC’S DATA CENTER, ACCORDING TO FT.
https://x.com/FirstSquawk/status/2037586926375743904
👾 Claude Code 🤝 LangSmith 🦜 We’ve shipped a new way to trace Claude Code runs to LangSmith! It’s a plugin that traces subagents, tool calls, compaction runs, and more. You can run evals to test the impact of skills/MCPs, use LangSmith Insights to look for trends across your
https://x.com/LangChain/status/2040137349313556633
Agent teams in Claude Code can drive SO MANY browser tabs for verification work
https://x.com/kylebrussell/status/2039825390131155270
Another sick upcoming feature: /acp spawn codex –bind here LOOK AT ME, I AM CODEX NOW You could bind codex/claude code/opencode already in threads, now you can take over your current session as well.
https://x.com/steipete/status/2037725493315707290
Anthropic DMCA’d my Claude code fork. …which did not have the Claude Code source. It was only for a PR where I edited a skill a few weeks ago. Absolutely pathetic.
https://x.com/theo/status/2039411851919057339
Anthropic should really lock in more GPUs and TPUs. Otherwise we’re all headed for a $2,000/month Claude Capybara plan.
https://x.com/Yuchenj_UW/status/2037391159115563214
Audit Claude Platform activity with the Compliance API | Claude
https://claude.com/blog/claude-platform-compliance-api
Bought Claude Pro and hit the usage limit with a single Claude Code prompt (Sonnet 4.6) The same prompt runs significantly more times on Codex (with Plus sub) Not sure how people deal with Anthropic’s cursed rate limits and absolutely scuffed infrastructure reliability
https://x.com/cto_junior/status/2040130186755371192
btw the codex for claude code plugin is open sauce – go play around with it, tinker and make it fit for your use cases gotta love the open standards
https://x.com/reach_vb/status/2038702889070211557
Claude Code being closed source is the biggest bag fumble in the AI era. If CC was on Github, these things would be trivial to identify and fix. Instead we’re stuck reverse engineering their incompetence.
https://x.com/theo/status/2038740065300676777
Claude SO slow
https://x.com/Teknium/status/2039270117650116934
Code is free, but Anthropic is shutting down repos of the leaked Claude Code source with DMCA requests. 🤔
https://x.com/dbreunig/status/2039007097376108979
I built a new plugin! You can now trigger Codex from Claude Code! Use the Codex plugin for Claude Code to delegate tasks to Codex or have Codex review your changes using your ChatGPT subscription. Start by installing the plugin:
https://x.com/dkundel/status/2038670330257109461
In a world where everyone can build websites, apps and features easily (thank you Cursor, Lovable, Claude and the likes), it will take more for you and your company to differentiate themselves (which is in my opinion the basis for success). That’s why we’re seeing more and more
https://x.com/ClementDelangue/status/2038649731404927202
In this Codex vs. Claude Code AI coding war, rate limit reset frequency is Prometheus’s fire. Whoever gives developers more rate limit resets wins this token economy.
https://x.com/Yuchenj_UW/status/2039364184459391075
Introducing ARC — Agent Remote Control 📡 Think Claude Code’s web viewer, but for any local AI agent. Start a task on your workstation, then monitor and interact from any browser – your phone, tablet, or another laptop. Watch tool calls in real-time, send messages, answer
https://x.com/winglian/status/2038680417125957865
Is Claude Code 5x Cheaper Than Cursor?
https://www.ashu.co/claude-code-vs-cursor-pricing/
it may sound insane, but @theo is almost definitely right to suggest that Anthropic should open-source Claude Code. The benefits are obvious: -it would be the most-starred repo of all time by a very wide margin, easily surpassing OpenClaw -they would get a bunch of free
https://x.com/michael_chomsky/status/2039986402260046226
me after seeing claude elevated errors and 529 (couldn’t remove the markers because i got 529 while making this)
https://x.com/dejavucoder/status/2037439287873159641
Sachin1801/claude-code | DeepWiki
https://deepwiki.com/Sachin1801/claude-code
Self-updating docs in the Claude Code source code: – Employees can create new files “”Magic Docs”” with the MAGIC DOC header – Internal builds of Claude Code fire off a dedicated subagent when idle – A background agent documents the specified feature in the Magic Doc file –
https://x.com/mattyp/status/2038988217102266669
Starting today you can use Codex in Claude Code 👀 /plugin marketplace add openai/codex-plugin-cc Try it out today with: /codex:review for a normal read-only Codex review /codex:adversarial-review for a steerable challenge review /codex:rescue to let codex rescue your code
https://x.com/reach_vb/status/2038671858862583967
This is exactly what I’ve been doing with Claude Code. The biggest bottleneck with my ability to use these agents is ensuring they preserve relevant context between relevant sessions. Having the agent output files in .md and .html is not only a nicer way to view outputs than in
https://x.com/jerryjliu0/status/2039834316013031909
To clarify, OpenHands will not be issuing any DMCA takedown notices for those who want to use our agent, which has most of the features of Claude Code. We have Tamagotchi on the roadmap, no worries.
https://x.com/gneubig/status/2039166255089799222
Two notes from this year-old prediction: 1) You can either view this as hype (100% of code is not written by AI) or a startlingly solid prediction (Claude Code didn’t exist then, but now writes a remarkably high percentage of code) 2) Adoption is more of a barrier than technology
https://x.com/emollick/status/2037147367925789073
Universal CLAUDE.md Claims to cut Claude output tokens by 63%! Drop-in. No code changes. CLAUDE.md is one of the best ways to steer Claude Code. Not surprised to see the efficiency reported here.
https://x.com/omarsar0/status/2039343351187554490
We don’t talk about this enough. Opus scored 20% higher in Cursor than in Claude Code.
https://x.com/theo/status/2038690786821505378
We just open-sourced 12 agent skills that teach Claude Code and Codex how to use Together AI. Install them and your coding agent just knows the right SDK patterns, model IDs, and API calls, no more copy-pasting from docs! npx skills add togethercomputer/skills
https://x.com/togethercompute/status/2039392682553094239
We need to talk about the Claude Code rate limits
https://x.com/theo/status/2039992633616224366
We’ve made setting up
https://t.co/wbJhWHsewH with GitHub much easier! You can now run /web-setup in a local `claude` session to use your local GitHub credentials on the web
https://x.com/_catwu/status/2039027712288075812
Chinese OpenSource models are gonna mug Anthropic & OpenAI like they never existed before The coding gap between open and closed-source is practically gone GLM-5.1 gives the almost the same comparable coding performance that goes toe-to-toe with Claude Opus, but a roughly 10x
https://x.com/XFreeze/status/2037695882301436412
⚠️ Supply chain attack in progress: someone is squatting Anthropic-internal npm package names targeting people trying to compile the leaked Claude Code source. `color-diff-napi` and `modifiers-napi` — both registered today, same person, disposable email. Do NOT install them. 🧵
https://x.com/Butanium_/status/2039079715823128964
I think this is a terrible move by @AnthropicAI. The open source community is going to build custom harness now anyways, you might as well have some control. Obviously they didn’t want this to happen, but now that it has I don’t see what they’re going to accomplish
https://x.com/BlancheMinerva/status/2039128635559318013
is it just me or is Claude down?
https://x.com/iScienceLuvr/status/2037487244634972471
The AI labs have actually done a bad job explaining what the future they are building towards will actually look like for most of us. Even “Machines of Loving Grace” has very few well-articulated visions of what Anthropic hopes life will be like if they succeed at their goals.
https://x.com/emollick/status/2039142905156153428
This is an actual violation of the DMCA. Anthropic just broke the law.
https://x.com/theo/status/2039412173689196674
I know these are all unreliable leaks of internal code names but please, please AI labs, the only thing worse than calling your models GPT-5.5-xhigh-Codex-nano is giving them names like Agent Smith or Mythos, for obvious reasons.
https://x.com/emollick/status/2037565418970185786
I have long felt that agent harnesses – even claude code – are too restrictive, because they are still designed by humans. New paper for Tinsghua and Shenzhen says, what if AI itself runs the harness, rather than defining it in code? Given a natural language SOP of how an agent
https://x.com/rronak_/status/2038401494177694074
I don’t get this post. All users are saying they’re reaching their rate limits faster than before. Anthropic investigated and said: we found nothing, but hey, why not use Sonnet instead of Opus because Opus uses about twice the bandwidth?
https://x.com/kimmonismus/status/2040026508169728257
I told you Anthropic will make use of their compute advantage in Q1 sure smells like a 10T model to me
https://x.com/scaling01/status/2037384912743923969
I’m very glad to see that Anthropic interp has caught up to the idea of generating a bunch of contrastive synthetic data for extracting supervised steering vectors from! It’s unfortunate that there’s no prior work to cite on this…
https://x.com/aryaman2020/status/2039761326440898672
idk why everyone is flipping out about the leaked source code rather than the dropped requests and freezing today. makes me think you people are too busy tweeting and not actually coding lol
https://x.com/andersonbcdefg/status/2039238729932701814
New Anthropic Fellows Research: a new method for surfacing behavioral differences between AI models. We apply the “diff” principle from software development to compare open-weight AI models and identify features unique to each. Read more:
https://x.com/AnthropicAI/status/2040179539738030182
Maybe we shouldn’t have given away the fact that you can crash Opus by asking about California’s High Speed Rail delays in Armenian. Would’ve been useful to have that in our back pocket, just in case,
https://x.com/emollick/status/2039372868409270556
When we artificially dialed up the “desperate” vector, rates of cheating jumped way up. When we dialed up the “calm” vector instead, cheating dropped back down. That means the emotion vector is actually driving the cheating behavior.
https://x.com/AnthropicAI/status/2039749652413550691
This work from @voooooogel was pretty ground-breaking:
https://x.com/jeremyphoward/status/2039880485036544422
Scoop: Altman told staff he tried to “”save”” Anthropic in Pentagon clash
https://www.axios.com/2026/03/26/sam-altman-openai-anthropic-pentagon
Holo3 is here 🚀. Today, we’re launching Holo3: our new series of frontier computer-use models. 78.9% on OSWorld-Verified. That puts us ahead of GPT-5.4 and Opus 4.6, at one-tenth of the cost. Weights on Hugging Face. API is live. Test it now! #Holo3 #OpenSource #ComputerUse
https://x.com/hcompany_ai/status/2039021096649805937
@Zeneca I really tried to make OpenClaw work with Kimi 2.5, but it was unusable with anything smaller than Sonnet 4.6… Hermes, Qwen 3.5 35B drives is mostly without issues. So yeah, a pretty big difference.
https://x.com/Everlier/status/2039853380844081260
The next version of OpenClaw is also an MCP, you can use it instead of Anthropic’s message channel MCP to connect to a much wider range of message providers. (I know, this is awkward)
https://x.com/steipete/status/2037715163562815817
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