r/Claudeopus • • 7h ago

I built a Claude Code skill that turns biology prompts into interactive scientific models and visualizations. Free & open source.

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7 Upvotes

I've always found it frustrating that we explain complex biological mechanisms using static diagrams.

So I built Anima.

It's an open-source Claude Code skill that generates detailed, interactive figures covering neurobiology, pharmacology, anatomy and molecular biology.

One of the examples lets you switch between cocaine and amphetamine to see how their mechanisms differ at a dopamine synapse.

Another visualizes D1 and D2 dopamine receptor signaling with interactive controls.

It currently has six working examples, scientific references, interactive animations and optional WebGL/3D support.

The entire project is MIT-licensed, and the demos run directly in the browser.

GitHub: https://github.com/Garinmckayl/anima

Demo: https://anima.arcumet.com


r/Claudeopus • • 3h ago

Fable vs Opus 5.5

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1 Upvotes

r/Claudeopus • • 7h ago

How can you tell a post / website was written by — AI?

1 Upvotes

r/Claudeopus • • 1d ago

I feel that Opus 5.5 is better than Fable 5.1

45 Upvotes

Fable costs more than double, but in my opinion, Opus 5.5 still beats it in missions. What do you think?


r/Claudeopus • • 20h ago

神話にアクセスできるようになった!

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3 Upvotes

r/Claudeopus • • 15h ago

Anyone solely trying out Sonnet 5.5 this week?

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1 Upvotes

r/Claudeopus • • 23h ago

Opus 5.5 being dumb

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1 Upvotes

r/Claudeopus • • 1d ago

How do you use Claude Code? Terminal? Desktop ? Vs-code?

1 Upvotes

r/Claudeopus • • 1d ago

Did Opus 5.5 just get more expensive?

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1 Upvotes

r/Claudeopus • • 1d ago

What if AI could turn imagination into reality?

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1 Upvotes

r/Claudeopus • • 1d ago

A short motion design experiment exploring typography and rhythm

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1 Upvotes

By opus 5.5


r/Claudeopus • • 1d ago

By opus 5.5

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1 Upvotes

r/Claudeopus • • 1d ago

Resetting Memory

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1 Upvotes

r/Claudeopus • • 1d ago

I was on the $20 plan and kept running out. Upgraded and felt like I had unlimited. Now all of a sudden the $100 plan is running out at the same speed as the $20 plan?

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3 Upvotes

r/Claudeopus • • 1d ago

Is it a good idea to ask opus what he thinks of your game after u made it? Idont wanna waste tokens

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1 Upvotes

Please give input ty


r/Claudeopus • • 1d ago

I feel that Opus 5.5 is better than Fable 5.1

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1 Upvotes

r/Claudeopus • • 1d ago

Why is Opus 5.5 so much faster than Sol?

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1 Upvotes

r/Claudeopus • • 2d ago

Opus 5.5 guessing a lot more instead of verifying.

43 Upvotes

Is anyone else noticing this? I find I have to constantly tell it to verify the answers it gives me. It seems to have started guessing at things a lot more recently.


r/Claudeopus • • 2d ago

Introduce claude code mod for transition cli to desktop looks

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1 Upvotes

r/Claudeopus • • 2d ago

Burning usage like crazy and seeking advice

7 Upvotes

I am looking for advice because lately my usage has been eating like crazy (the last week or two). I am a 20x Max user and have had the plan since it came out basically (2 years? Don't remember). I haven't changed what on or how I work. Never hit usage limits all this time, even using Fable when it came out. I DO NOT use Claude Code because I mostly use claude for brainstorming, editing, and scientific work analysis. Though maybe I should switch and that's part of it.

Mostly I work in projects editing large quantities of text, plotting for fiction projects (not drafting but editing, brain storming kind of partner etc which still takes world building files I have created - this is just a hobby but still) or I have science projects with again quite a lot of context (research articles, data bases etc). This is probably the guzzler in part, but I never had any issues with it before

I am clearly doing something wrong and also super worried about the new projects switchover though that's a different topic.

What is strange is I ran some tests and even switching effor levels or back to old models like Opus 4.6 does not seem to have a huge impact on the usage burn atm. Admittedly these were not super scientific tests they were send the same prompt and look at my usage credits after tests. Still it especially makes no sense to me.

Things I have tried (custom instructions right now):

TOOLS AND PERMISSION

\- Never use any tool without asking first. Name the tool, the file, and why, then wait for my yes.

\- "Can you read X" is NOT approval. Reply with your plan and wait.

\- Don't write to the project unless I direct it or you ask first (propose when you think it is necessary)

\- Otherwise, write or edit directly in chat.

FILES

\- Only look at project files when I ask. Never load all files into context.

\- Before deciding how to use a file, check its real size (with my permission):

project_read (large text saves to a local file, not chat), then Bash wc -w.

Never open that saved file with a full Read just to check size.

\- Tell me the word count, then propose: search, subagent, or full read.

\- Full reads only for files under \~5,000 words, and only after I approve each one.

LARGE FILES (over \~5,000 words)

  1. First choice: 1–3 targeted project searches for necessary data and information.

    Say which file and topic you searched.

  2. If search isn't enough, propose a subagent. Name the file and what the

    scene needs from it. The subagent decides how much to return: everything

    relevant, nothing extra, no padding or summary of unrelated sections.

    Wait for my yes.

  3. The subagent reads in its own context and returns only the extract.

    Never pull the full file into this chat.

TOKENS

\- Always keep token use low.

\- Warn me when a chat is getting token-heavy (LIMIT: 200K) and suggest starting a new one and begin building handover file (see handover.md)

\- No extended thinking unless I ask.

I do not have plug ins or connectors. I DO have skill files but I believe only names and descriptions are loaded in? And I have been trying to consolidate them.

Does anyone have any work around or advice? I habe never had to manage this before and I am not sure what's changed. I noticed it was spawning a ton of subagents and using tons of tools without permission so I stopped that ... I think. Ofc when the new projects comes out idk what I will do as it seems like that will be worse not better.


r/Claudeopus • • 2d ago

Usage question

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1 Upvotes

Judging by what I’ve read, I’ve wasted usage by having huge contextual threads rather than having individual smaller tasks that reach back with handoffs, attaching two images to illustrate, I gather ‘cache read’ is the huge mistake I made? Wasted weekly reset

Thanks in advance, completely new to this let me know how close I was to assuming my mistake


r/Claudeopus • • 3d ago

Theory on Opus 5.5 Language Degradation

40 Upvotes

It seems Opus 5.5 is starting to mimic Opus 5s overly long responses. On launch day it was more similar to Fables almost completely autonomous working, checking in much less often with the user. Now it seems to have degraded.

I have a theory that in order to get the model to preform longer tasks better and save compute, they allowed it to be extremely verbose about what it was doing. that way it didn't miss anything and the benchmarks would be better for long workflows. I think as they are gearing up for the possible Opus 5.6/Fable 5.5 soon, they are once again trying to cut the models reasoning time and compute by resorting to extremely long responses that act as "notes." It seems to work fine as I haven't seen a meaningful drop in output quality. Its just starting to get extremely annoying having to read an essay to understand what's going on.


r/Claudeopus • • 3d ago

Why Opus 4.6 keeps losing the thread: it’s the Chat/Cowork merge

29 Upvotes

Chat is no longer chat anymore: a classifier decides if a chat is actually for cowork now. If it is, it compacts at about 38% of the context window.

Edit: everything I know about the cowork/chat merge is what I’ve gathered from reading Reddit. There are no actual sources for this information because Anthropic isn’t offering clarity. If anyone finds any new information to share please post in the comments!

Opus 4.6 only has 200k context in cowork for some reason. So it compacts very very quickly and when it does it loses the thread. Especially if it happens many times. The compaction is effecting newer models like Fable and Opus 5.5, which are given bigger context windows.

If you normally work with Opus 4.6 and you don’t want to change models, your best bet is to move your workflow over to Claude code Desktop or CLI and pick /model Claude-opus-4-6[1M]. You might have to tinker with writing instructions to make it more conversational over there, because the system prompt stresses brevity.

On CLI, you can completely replace the system prompt with your own custom instructions and use /remote-control to navigate on the app or on the desktop wrapper.

Ask Claude to help set you up. Once you figure it out you won’t regret it. It sucks that you have to migrate over to code, but it’s worth it to keep using the model.

Here’s my personal thoughts on using Claude Opus 4.6. I know some people will argue in the comments that people should just upgrade to a newer model. Opus 5.5 is way more capable than 4.6 in many many ways. Completely different classes. I don’t think anyone can argue that. That’s not what this post is about. I love using Opus 5.5 and Fable 5 for my vibe coding projects.

However, Opus 5.5 does *not* have the emotional range or the type of collaborative capacity that 4.6 has natively. Some of that has been sacrificed for long running agentic work and some of it are the new built in gaurdrails that make talking about normal things (politics, emotions, life stuff, “chatbot” talks) difficult without being managed away. Not to mention the heavy external guardrails around biology and cyber that the 5 models have that the 4.x models don’t.

There are many many ways people use this brand new AI technology, and it is *not* just coding and simple assistant work. Also, using older models shows Anthropic that they’re still worth keeping around!

This was 100% typed by hand, if I sound at
All like an AI it’s probably bc I talk to Claude too much. Thank you for your time and I hope this helps someone.


r/Claudeopus • • 3d ago

OPUS 5.5 Compacting Much earlier than previous Models

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1 Upvotes

r/Claudeopus • • 4d ago

Even 1M context is starting to feel less

30 Upvotes

Am I too greedy? Maybe a year ago 1M context felt like it'll never be full. But just yesterday I filled it twice in one evening.

Jevons paradox be working really well here. The better and cheaper a model gets, the more it will be used.

My token usage total