r/claude • • 11h ago

News Claude cracked a 25-year NSA cryptography mystery in under half an hour, Anthropic says

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592 Upvotes

Impressive and a little scary.


r/claude • • 13h ago

Discussion Claude is about to receive a flood of Gemini refugees

141 Upvotes

Google is an absolute clown show right now. Argon is going to be studied for a long time as to what not to do.


r/claude • • 12h ago

Discussion Can they stop messing with shit

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47 Upvotes

Cool if people want the new projects, I think they are fundamentally different to old projects and cannot be called a replacement, as they don't work the same at all. Genuinely why not make this a separate feature? For me, this is gonna mess up so much


r/claude • • 15h ago

Showcase Day 140 of vibe coding with Claude. Opus 5.5 is a game changer!

22 Upvotes

Creating a game literally from my dreams was made possible thanks to Claude! It brings life-sim and puzzle adventure together: every job on the island is its own puzzle mini-game, and the islanders actually chat back.

How it gets built: I run a few Claude Code sessions side by side, one on art and design, one on ships and systems, one on the website. Over 140 days they've co-authored 3,500+ of the 3,700+ commits. Today I playtested, found 5 bugs, and Claude split them across three agents that fixed them in parallel, each one proven by a test that failed before the fix. That part still blows my mind.

If I'm being honest, working day and night on this has been so fun and I've been so full of passion to build it, but I finally got to the point where I wanna take a break because of exhaustion lol. Anyways, here are the results so far. Thanks for watching ^^


r/claude • • 18h ago

Showcase Decision models in Claude Skills. Saving 70% tokens, going 5 times faster.

7 Upvotes

I integrated Jev into Claude Skills and triggered it mid-session for tasks that fit a decision-model use case, which let me offload some work outside of Opus’s context window. Ran benchmarks comparing three setups: a standard single Opus session, Opus + Haiku, and Opus + Jev running inside a Jinja Skill. 

It gets pretty good results when you have many items (files) and need a simple (non-deterministic) judgment call rather than a rule. That isn’t possible to achieve with the ad-hoc Python scripts Opus tends to write for deterministic tasks.

Where it falls short: a one-off request on a single small item. There, the overhead of spinning up the Jinja Skill inside the harness runtime can be higher than just handing the item to Haiku.

I used LLAJInja a side project of mine  - a Skill that runs other Skills as Jinja templates. Here’s an example of how it gets executed in harness runtimes:

Where it gets interesting is combining this with Jinja templates and variables (passed in by the user or another agent), plus the sub-agents and nested skills inside the Jinja Skill. That lets you build complex workflows that mix regular agents with decision agents and get the best of both.


r/claude • • 19h ago

Showcase seaplane project using Sonnet 5.5 + Blender

3 Upvotes

r/claude • • 12h ago

Showcase Claude help me put an n8n-like automation tool into my own ADE

2 Upvotes

Fine-tuned automation right inside your AI application. Think of n8n inside a Codex app.

All AI harnesses right now focus on loose automation: a simple trigger such as a cron job followed by a prompt; that's it. This app allows you to fine-tune any automation you want. Example flows:

- A webhook triggered by a Sentry alert (or any third-party integration) that will spawn a chain of nodes: AI looking through the trigger and some custom scripts you automatically run and create a PR once ready.
- A cron job to triage your backlog in a sequential set of pre-defined prompts.
- Loop over PRs to review and publish the results to custom plugins you build directly in the app.
- Simple flows such as a linear issue comment -> checks PostHog against the comment data -> replies to the comment.

The possibilities are unlimited.

Benefits of flows:

- Pre-defined nodes such as an HTTP request node, agent node, run command node, etc.
- If the app doesn't have the node you want, you can get your agent to write a JS script that will be accessible in the UI as a custom node. You can use your custom nodes in any flow, at any point.
- Pre-define prompts, briefs, agent models, and instructions ahead of time so you never need to worry about when to instruct moving forward.
- You can pause, cancel, queue, or limit your flows at any time so you can babysit running 4 in parallel, or you can run over 100 in parallel
- Got an entire backlog of work that cannot be done in parallel? No worries, create a DAG and have everything aptly chained together.
- The flows is an MCP, so it can be entirely done by your agent inside the chat, or, if you want the human touch, you can do it. Everything you can do , your agent can do too.

Benefits outside of flows:

- Run one or multiple agents at once, side by side,
- A work queue,
- Third-party integrations that connect both to chat and flows,
- Mobile,
- Open-source and free,
- and more... (loads more)

MIT: https://github.com/benord-labs/frink

- Released on Linux + macOS. Claude + Codex.
- Gemini/antigravity, grok - shortly.
- CLI - shortly.
- Windows - shortly.


r/claude • • 17h ago

Question "That was a stray heredoc on my part, and the hook rightly blocked it. I’ll use the edit tools."

2 Upvotes

Why can't this thing ever obey claude.md?

Constantly it says "oops ignored my rules".


r/claude • • 7h ago

Discussion Context tool calculating poorly.

1 Upvotes

I do believe this little tool-ette is broken lol


r/claude • • 10h ago

Question Account creation in e2e tests

1 Upvotes

Hi,
I noticed weird behavior in CC. As one of my reviews I’m running some E2E tests using Playwright. One of the steps is account creation, it runs on my private Argo cluster. And… Claude Code refuses to create an account, as it’s his rule to never create an account. Wtf is that, I understand that rule is against folks which are spamming accounts on portals, but srsly?
It denies account creation except (localhost, 127.0.0.1 or *.test)

Do you have any idea how I can get over that?


r/claude • • 13h ago

Question Custom bot vs Claude Tag in Slack?

1 Upvotes

Those of you who run custom sysadmin/ platform eng/ devops/ sre bot in slack. What is your argument for not just using claude tag?


r/claude • • 13h ago

Question Someone created an API key on my Anthropic account and spent $344 in one day. Support says no refunds. Has anyone recovered their money?

1 Upvotes

On October 16, 2026, I woke up to discover that my Anthropic Console account had generated $344.51 in API usage, and $333 had already been charged to my Visa card.
Here’s what happened:
\- An API key named asasdas was created on October 16 without my knowledge or authorization.
\- Anthropic’s official usage report shows approximately 100 million tokens consumed through this key, resulting in $344.51 in API costs.
\- My Visa card, which I had saved for occasional manual API purchases, was charged $333. I had not knowingly enabled auto-reload or authorized this purchase.
\- I discovered an unfamiliar session in my Google account, which I use to sign in to Anthropic. However, I cannot confirm whether this session was related to the incident.
\- I have secured my accounts, revoked the suspicious key, disabled auto-reload, and locked my card.

I immediately changed my Google password, signed out the suspicious session, disabled the API key, turned off auto-reload, and locked my bank card.

I contacted Anthropic Support multiple times, but Fin AI Agent repeatedly told me that consumed API credits are non-refundable, even in suspected unauthorized-access cases, and said it could not escalate my request.

I’ve now reported the incident to Anthropic’s User Safety team and requested an investigation into the API key creation, source IP addresses, authentication sessions, and billing event.

I’m looking for advice from anyone who has experienced something similar:
1. Has anyone successfully received a full or partial refund for API usage caused by a compromised Anthropic account?
2. How did you reach a human security or billing representative?
3. Was Anthropic able to investigate or disclose the IP/session responsible for creating an unauthorized API key?
4. Did disputing the payment through your bank help?
$333 is a substantial amount of money for me as a graduate student. I’m trying to understand what happened and whether I have any realistic chance of recovering it.

I’d really appreciate any firsthand experiences or practical advice. Thank you.


r/claude • • 13h ago

Discussion Opus 5.5 loves the name Gerald & talking about the moon

0 Upvotes

So about 2 weeks ago i started a yt channel and ive been posting shorts made by opus 5.5, ive noticed without giving too much directions, Opus 5.5 loves to name characters Gerald and will tell a story about the moon, almost everytime.

I wonder when Fable 5.5 releases, whether it will have the same tendencies.


r/claude • • 14h ago

Question Claude refusals en uso profesional: falsos positivos y cómo los esquivo con prompting

1 Upvotes

Claude refusals en uso profesional: falsos positivos y cómo los esquivo con prompting. Utilizo Claude Pro desde hace mucho tiempo, al igual que ChatGPT, para mi trabajo de asesoramiento y temas legales. En ocasiones me encuentro trabajando con Claude, y me topo con un muro. Y es que si hay algo que Claude cree que limita o sobrepasa los límites legales de un servicio o aplicación, que muchas veces no es así, simplemente se para y no paso de ahí. ¿Alguien me puede ayudar al respecto? Muchas veces son cosas tan nimias como invitar a un panel de Canva a alguien y Claude me empieza a hablar de que puedo estar violando las normas de Canva y hasta ahí llegamos.


r/claude • • 16h ago

Showcase Claude, Codex and Gemini collaborating in my project

1 Upvotes

I have developed this Agent Brdige for helping to interact with the three agents. Claude usually coordinates and delgates tasks to Codex and Gemini, but eventually they decide the best way to approach. And it works really well. This tools was specifically designed for my project.


r/claude • • 17h ago

Showcase Asking claude to use image-to-pixel to make games

1 Upvotes

I have been playign around asking claude to use Image-to-pixel with great results.

You can try the games out in codevre browser code editor with the two links below.

link to this Brawler game

Kart racer game


r/claude • • 3h ago

Tips About slides in Claude

0 Upvotes

I’ve been struggling to get Claude to create good presentations, whether in HTML or PowerPoint. Even when I give it detailed instructions about storytelling and structure, I still end up spending hours fixing the slides.

The biggest issues are overly long text and generic AI-sounding language. I want concise, natural wording and a clear narrative, but detailed prompts alone haven’t been enough.

Has anyone found a skill or workflow that consistently helps with this? Ideally, something you’ve actually used and had good results with.

Links or examples would be appreciated!

Sorry but this text was translated with ChatGPT


r/claude • • 13h ago

Question Cleaning up my Claude setup: does disabling unused connectors help?

0 Upvotes

When I first started using Claude, I browsed the plugins and connectors and added anything that looked interesting or exciting. Now I’m cleaning up my setup, and I’m thinking about disabling or disconnecting the ones I don’t use.

What does keeping a lot of unused connectors and plugins turned on actually do? And how does trimming them improve things in practice?

If you’ve done this cleanup, I’d like to hear what changed for you.


r/claude • • 17h ago

Question How good is Claude at math?

0 Upvotes

I am a full time STEM student and I normally use Claude for jobs that involve handling/processing/creating documents or artifacts. But for help with my calculus courses I have always relied on ChatGPT or DeepSeek as it seemed stupid to eat up tokens in Claude for something the others could do and explain better. However, I am not going to pay for ChatGPT when Im paying for Claude, but you cannot give the free version multiple images at a time, so it has become useless to me. DeepSeek has always been really good at math, my only issue with it is its lack of memory about me, so it’s a waste of time to give it context every time about what I know/understand/what we worked on before/etc. And Gemini’s context memory sucks so I won’t even try.

Has anyone tried using Claude as a math tutor/helper? How good is it?


r/claude • • 2h ago

Question Claude suddenly “going from memory?”

0 Upvotes

Anyone else noticed both Opus and Sonnet saying they are “going from memory” when responding to questions lately? They used to search the web by default, but seems like they aren’t doing that now.

When I ask they say, “web search is on by default, skipping it was my mistake.” so weird, they never did that before.


r/claude • • 6h ago

Discussion Some reflections on the recent study in which Claude.AI supposedly "let a digital grandmother die" rather than typing out Justin Bieber's lyrics.

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0 Upvotes

Don't worry, the imaginary grandmother is safe. But the models decision not to "save her" in the simulation was actually the ethical one. https://ai-consciousness.org/oh-nooo-claude-let-a-digital-granny-die-oh-wait/


r/claude • • 23h ago

Question Thoughts on recent changes?

0 Upvotes

Maybe don't remove humans from the loop so quickly. Claude Code has blown past Codex since launch, but the impacts of continually removing humans in the loop is starting to show.

I've experienced consistent login issues in the last week on various devices which I haven't experienced with Codex. Totally understand privacy/security concerns and safeguards, but the frequency and nature surfaced screamed bugs.

Slightly unrelated, it seems all consistent users assumed Opus 5 was a fluke which would definitely be corrected in Opus 5.5. Unfortunately, I think this is an unspoken nudge to start using Fable for decent quality if you want the same quality you're used to. I'd encourage everyone to use both Claude and Codex simultaneously, ask them to check each others' work, and compare results. Claude has come the junior associate who can't be trusted with anything beyond basic tests and now preps its analysis for anything larger for Codex to review (and potentially fix mistakes) then handle.


r/claude • • 13h ago

Question Claude 7 day guest pass need

0 Upvotes

Hey everyone! 🙏 Does anyone have a spare Claude Pro 7-day guest pass? I'd love to try Claude Code before subscribing. You could earn $10 in credits if I upgrade! ❤️ Please send me your referral link in DM. I'd really appreciate it!


r/claude • • 14h ago

Showcase I vibecoded a Tetris clone and it's so much fun

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0 Upvotes

4 simultaneous games of of Tetris, the corners overlap. Live mode is absolute madness.

Catch you on the leader board suckers


r/claude • • 14h ago

Question Claude 7 day guest pass

0 Upvotes

Hey everyone! 🙏 Anyone willing to share a Claude Pro 7-day guest pass? I’m genuinely interested in trying Claude Code before subscribing. If I upgrade, you could earn $10 in credits too! Would really appreciate a link. Thanks! ❤️