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Claude Opus 4.8

anthropic.com

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Re: Claude Opus 4.8

#531

Post by dbbk »

TIPSIO wrote: post #234
northern-lights wrote: post #23

> Not only that, but we plan to release a new class of model with even higher intelligence than Opus. As part of Project Glasswing, a small number of organizations are currently using Claude Mythos Preview for cybersecurity work. Models of this capability level require stronger cyber safeguards before they can be generally released. We’re making swift progress on developing these safeguards and expect to be able to b…

Seems like they might be hinting that if you are not a billionaire or multi-billion dollar company you will just get a limited and nerfed Claude Code slash command /mythos-security-audit or something. Hope this isn’t the case and that normal average Joe’s of the world don’t get policed out of access.

What does an average Joe need a Mythos level model for that Opus can't do for them?

Re: Claude Opus 4.8

#532

Post by andai »

jclay wrote: post #424
senko wrote: post #385

My fav coding benchmark for frontier models is to build a simple RTS game in one file (js/html/css). Claude Code with Opus 4.8 in ultracode mode nailed it, the best result so far: https://bsky.app/profile/senko.net/post/3mmwnrkwboc2v The prompt was: Create a simple but functional real time strategy (RTS) game similar to old WarCraft, StarCraft or Command & Conquer games. The player should be able to build buildings,…

It almost appears as if the code was minified. The variable names are short and formatting looks like it's written to minimize whitespace. Did it write it in this compact format all on it's own?

A friend sent me something he vibe coded which included a massive webassembly blob in the HTML file. My friend is not a programmer so he was not able to explain to me how it did that.

Re: Claude Opus 4.8

#534

Post by peder »

dakolli wrote: post #437
setnone wrote: post #128

Claude's 4.6 - 4.7 transition made me discover codex, and with gpt 5.5 there is no way i'm going back

[flagged]

ha, exactly... like, the % change could be minuscule (or worse, it might only be a perceived difference, the actual quality may have regressed, or the scenario just didn't lend itself to that specific model) but people will be on here proclaiming that they're now shipping 10x the number of PRs.

Re: Claude Opus 4.8

#535

Post by pornel »

rahimnathwani wrote: post #365

Can anyone explain how this is possible? Developers can update Claude’s instructions mid-task without breaking the prompt cache or routing the update through a user turn. This can be used in a given harness to update permissions, token budgets, or environment context as an agent runs. Does this means the instructions are no longer just something in the early part of the conversation? (If they were, changing them woul…

The commands they list are app management, not part of LLM context. It's a bugfix for a needlessly delayed UI, not a model capability.

Re: Claude Opus 4.8

#536

Post by abalashov »

guluarte wrote: post #367
onlyrealcuzzo wrote: post #136

Earlier quoted context omitted.

I won't be surprised if the next gen frontier models are the last. There's orders of magnitude of low hanging juice to squeeze out of smaller models. It is almost guaranteed that a 60-90B model can outperform current SOTA in coding tasks within 2-3 years (design not certain, probably unlikely). It is far less clear that a 1.2T model will be meaningfully better enough to justify training it. As far as reasoning is con…

I think the future will be enterprise clients will train their own models based on their needs and data.

Versus just packing all their needs and data into context, and RAG (i.e. context)?

Re: Claude Opus 4.8

#537

Post by brandly »

apitman wrote: post #451
senko wrote: post #385

My fav coding benchmark for frontier models is to build a simple RTS game in one file (js/html/css). Claude Code with Opus 4.8 in ultracode mode nailed it, the best result so far: https://bsky.app/profile/senko.net/post/3mmwnrkwboc2v The prompt was: Create a simple but functional real time strategy (RTS) game similar to old WarCraft, StarCraft or Command & Conquer games. The player should be able to build buildings,…

I like that benchmark. You should throw the results up on GitHub pages so people can try out the games.

Yeah! Host on GitHub pages, so it's easy to click a link and play!

Re: Claude Opus 4.8

#540

Post by KronisLV »

raincole wrote: post #154
wg0 wrote: post #104

There is a hole in the boat's bottom due to Chinese models. They might not be as good but they are not bad either or at least I had hard time finding any issues with Deepseekv4 Flash and Pro variants. They get their job done sometimes rarely giving up till they are done what they are after. So even for enterprise deployments, as the dust settles down, CFO/CTOs might find out that deploying on an internal cluster of G…

I had been saying this on HN repeatedly: people are going to use the smartest models for coding. They don't care how cheap your tokens are if they don't have the highest probability of solving your programming tasks. And I was dead wrong. Now I mostly use DeepSeek Pro myself.

> And I was dead wrong. Now I mostly use DeepSeek Pro myself.

I've wasted over a hundred Euros re-doing work that was done badly due to the model not being up to task (Vue with TS + wrapper components around PrimeVue, needing to handle event and property passthrough and deal with the stupid Vue SFC issues, TS made this much worse than JS would be). I think it was the GLM model through Cerebras Code at the time, in addition to some GPT and Gemini models with the API pricing.

That said, DeepSeek V4 Pro is pretty good and I can totally see myself offloading some of the work, as long as a better model reviews the work and provides suggestions/tests for it.

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