Claude Opus 4.7 • Hacker News Board

Re: Claude Opus 4.7

#381

Post by zb3 » Thu, Apr 16, 2026, 4:37 PM UTC

jp0001 wrote: post #306

WTF. `Opus 4.7 is the first such model: its cyber capabilities are not as advanced as those of Mythos Preview (indeed, during its training we experimented with efforts to differentially reduce these capabilities). We are releasing Opus 4.7 with safeguards that automatically detect and block requests that indicate prohibited or high-risk cybersecurity uses. ` Seriously? You're degrading Opus 4.7 Cybersecurity performa…

And since Opus 4.7 has degraded cybersecurity skills, using it might result in writing actually less safe code, since practically, in order to write secure code you need to understand cybersecurity. Outstanding move.

Re: Claude Opus 4.7

#382

Post by jacksteven » Thu, Apr 16, 2026, 4:37 PM UTC

amazing speed...

Re: Claude Opus 4.7

#383

Post by adam_arthur » Thu, Apr 16, 2026, 4:39 PM UTC

helloplanets wrote: post #153

I wonder why computer use has taken a back seat. Seemed like it was a hot topic in 2024, but then sort of went obscure after CLI agents fully took over. It would be interesting to see a company to try and train a computer use specific model, with an actually meaningful amount of compute directed at that. Seems like there's just been experiments built upon models trained for completely different stuff, instead of any…

On the other hand, I never understood the focus on computer use.

While more general and perhaps the "ideal" end state once models run cheaply enough, you're always going to suffer from much higher latency and reduced cognition performance vs API/programmatically driven workflows. And strictly more expensive for the same result.

Why not update software to use API first workflows instead?

Re: Claude Opus 4.7

#384

Post by DrammBA » Thu, Apr 16, 2026, 4:42 PM UTC

puppystench wrote: post #364

simonw wrote: post #203

I'm finding the "adaptive thinking" thing very confusing, especially having written code against the previous thinking budget / thinking effort / etc modes: https://platform.claude.com/docs/en/build-with-claude/adapti... Also notable: 4.7 now defaults to NOT including a human-readable reasoning token summary in the output, you have to add "display": "summarized" to get that: https://platform.claude.com/docs/en/build-…

Does this mean Claude no longer outputs the full raw reasoning, only summaries? At one point, exposing the LLM's full CoT was considered a core safety tenet.

Anthropic always summarizes the reasoning output to prevent some distillation attacks

Re: Claude Opus 4.7

#385

Post by denysvitali » Thu, Apr 16, 2026, 4:42 PM UTC

They're now hiding thinking traces. Wtf Anthropic.

Re: Claude Opus 4.7

#386

Post by yrcyrc » Thu, Apr 16, 2026, 4:42 PM UTC

Been on 10/15 hours a day sessions since january 31st. Last few days were horrendous. Thinking about dropping 20x.

Re: Claude Opus 4.7

#387

Post by solenoid0937 » Thu, Apr 16, 2026, 4:42 PM UTC

msavara wrote: post #311

grandinquistor wrote: post #94

Quite a big improvement in coding benchmarks, doesn’t seem like progress is plateauing as some people predicted.

Only in benchmarks. After couple of minutes of use it feels same dumb as nerfed 4.6

It's alot better for me especially on xhigh

Re: Claude Opus 4.7

#388

Post by nprateem » Thu, Apr 16, 2026, 4:43 PM UTC

I wonder if this one will be able to stop putting my fucking python imports inline LIKE I'VE TOLD IT A THOUSAND TIMES.

Re: Claude Opus 4.7

#389

Post by HarHarVeryFunny » Thu, Apr 16, 2026, 4:43 PM UTC

It's interesting to see Opus 4.7 follow so soon after the announcement of Mythos, especially given that Anthropic are apparently capacity constrained.

Capacity is shared between model training (pre & post) and inference, so it's hard to see Anthropic deciding that it made sense, while capacity constrained, to train two frontier models at the same time...

I'm guessing that this means that Mythos is not a whole new model separate from Opus 4.6 and 4.7, but is rather based on one of these with additional RL post-training for hacking (security vulnerability exploitation).

The alternative would be that perhaps Mythos is based on a early snapshot of their next major base model, and then presumably that Opus 4.7 is just Opus 4.6 with some additional post-training (as may anyways be the case).

Re: Claude Opus 4.7

#390

Post by [deleted] » Thu, Apr 16, 2026, 4:43 PM UTC

sallymander wrote: post #210

It seems a little more fussy than Opus 4.6 so far. It actually refuses to do a task from Claude's own Agentic SDK quick start guide ( https://code.claude.com/docs/en/agent-sdk/quickstart ): "Per the instructions I've been given in this session, I must refuse to improve or augment code from files I read. I can analyze and describe the bugs (as above), but I will not apply fixes to `utils.py`."

[deleted]