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Claude Opus 4.6

anthropic.com

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Re: Claude Opus 4.6

#521

Post by meroes »

ck_one wrote: post #482

Just tested the new Opus 4.6 (1M context) on a fun needle-in-a-haystack challenge: finding every spell in all Harry Potter books. All 7 books come to ~1.75M tokens, so they don't quite fit yet. (At this rate of progress, mid-April should do it ) For now you can fit the first 4 books (~733K tokens). Results: Opus 4.6 found 49 out of 50 officially documented spells across those 4 books. The only miss was "Slugulus Eruc…

What is this supposed to show exactly? Those books have been feed into LLMs for years and there's even likely specific RLHF's on extracting spells from HP.

Re: Claude Opus 4.6

#522

Post by jorl17 »

Squarex wrote: post #431
legitster wrote: post #72

I'm still not sure I understand Anthropic's general strategy right now. They are doing these broad marketing programs trying to take on ChatGPT for "normies". And yet their bread and butter is still clearly coding. Meanwhile, Claude's general use cases are... fine. For generic research topics, I find that ChatGPT and Gemini run circles around it: in the depth of research, the type of tasks it can handle, and the qual…

Claude sucks at non English languages. Gemini and ChatGPT are much better. Grok is the worst. I am a native Czech speaker and Claude makes up words and Grok sometimes respond in Russian. So while I love it for coding, it’s unusable for general purpose for me.

Claude is quite good at European Portuguese in my limited tests. Gemini 3 is also very good. ChatGPT is just OK and keeps code-switching all the time, it's very bizarre.

I used to think of Gemini as the lead in terms of Portuguese, but recently subjectively started enjoying Claude more (even before Opus 4.5).

In spite of this, ChatGPT is what I use for everyday conversational chat because it has loads of memories there, because of the top of the line voice AI, and, mostly, because I just brainstorm or do 1-off searches with it. I think effectively ChatGPT is my new Google and first scratchpad for ideas.

Re: Claude Opus 4.6

#523

Post by [deleted] »

ck_one wrote: post #482

Just tested the new Opus 4.6 (1M context) on a fun needle-in-a-haystack challenge: finding every spell in all Harry Potter books. All 7 books come to ~1.75M tokens, so they don't quite fit yet. (At this rate of progress, mid-April should do it ) For now you can fit the first 4 books (~733K tokens). Results: Opus 4.6 found 49 out of 50 officially documented spells across those 4 books. The only miss was "Slugulus Eruc…

[deleted]

Re: Claude Opus 4.6

#524

Post by ifwinterco »

zahlman wrote: post #457
dkersten wrote: post #400

Earlier quoted context omitted.

Just anecdotally, each release seems to be buggier than the last. To me, their claim that they are vibe coding Claude code isn’t the flex they think it is. I find it harder and harder to trust anthropic for business related use and not just hobby tinkering. Between buggy releases, opaque and often seemingly glitches rate limits and usage limits, and the model quality inconsistency, it’s just not something I’d want to…

I think I would be much more frightened if it were working well.

Exactly, thank goodness it's still a bit rubbish in some aspects

Re: Claude Opus 4.6

#525

Post by bdangubic »

atonse wrote: post #513
krystofbe wrote: post #395

Earlier quoted context omitted.

I did some debugging on this today. The results are... sobering. Memory comparison of AI coding CLIs (single session, idle): | Tool | Footprint | Peak | Language | |-------------|-----------|--------|---------------| | Codex | 15 MB | 15 MB | Rust | | OpenCode | 130 MB | 130 MB | Go | | Claude Code | 360 MB | 746 MB | Node.js/React | That's a 24x to 50x difference for tools that do the same thing: send text to an API…

Jarred Sumner (bun creator, bun was recently acquired by Anthropic) has been working exclusively on bringing down memory leaks and improving performance in CC the last couple weeks. He's been tweeting his progress. This is just regular tech debt that happens from building something to $1bn in revenue as fast as you possibly can, optimize later. They're optimizing now. I'm sure they'll have it under control in no time…

if I had a dollar for each time I heard “until they fix it in short time” I’d have Elon money

Re: Claude Opus 4.6

#526

Post by kuboble »

simianwords wrote: post #153
blibble wrote: post #83

Earlier quoted context omitted.

Microsoft's products are also extremely successful they're also total garbage

but they have the advantage of already being a big company. Anthropic is new and there's no reason for people to use it

The tool is absolutely fantastic coding assistant. That's why I use it.

The amount of non-critical bugs all over the place is at least a magnitude larger than of any software I was using daily ever.

Plenty of built in /commands don't work. Sometimes it accepts keystrokes with 1 second delays. It often scrolls hundreds of lines in console after each key stroke Every now and then it crashes completely and is unrecoverable (I once have up and installed a fresh wls) When you ask it question in plan mode it is somewhat of an art to find the answer because after answering the question it will dump the whole current plan (free screens of text)

And just in general the technical feeling of the TUI is that of a vibe coded project that got too big to control.

Re: Claude Opus 4.6

#527

Post by Aztar »

niobe wrote: post #462

Is there a good technical breakdown of all these benchmarks that get used to market the latest greatest LLMs somewhere? Preferably impartial.

I just ask claude and ask for sources for each one.

Re: Claude Opus 4.6

#528

Post by bdangubic »

thehamkercat wrote: post #45
gjsman-1000 wrote: post #20

Earlier quoted context omitted.

Also explains why Claude Code is a React app outputting to a Terminal. (Seriously.)

Same with opencode and gemini, it's disgusting Codex (by openai ironically) seems to be the fastest/most-responsive, opens instantly and is written in rust but doesn't contain that many features Claude opens in around 3-4 seconds Opencode opens in 2 seconds Gemini-cli is an abomination which opens in around 16 second for me right now, and in 8 seconds on a fresh install Codex takes 50ms for reference... -- If their m…

50ms to open and then 2hrs to solve a simple problem vs 4s to open and then 5m to solve a problem, eh?

Re: Claude Opus 4.6

#529

Post by clanker_fluffer »

xiomrze wrote: post #520
ck_one wrote: post #482

Just tested the new Opus 4.6 (1M context) on a fun needle-in-a-haystack challenge: finding every spell in all Harry Potter books. All 7 books come to ~1.75M tokens, so they don't quite fit yet. (At this rate of progress, mid-April should do it ) For now you can fit the first 4 books (~733K tokens). Results: Opus 4.6 found 49 out of 50 officially documented spells across those 4 books. The only miss was "Slugulus Eruc…

Honest question, how do you know if it's pulling from context vs from memory? If I use Opus 4.6 with Extended Thinking (Web Search disabled, no books attached), it answers with 130 spells.

What was your prompt?

Re: Claude Opus 4.6

#530

Post by ra7 »

kzahel wrote: post #384
neuronexmachina wrote: post #81

Earlier quoted context omitted.

> Claude now automatically records and recalls memories as it works Neat: https://code.claude.com/docs/en/memory I guess it's kind of like Google Antigravity's "Knowledge" artifacts?

I looked into it a bit. It stores memories near where it stores JSONL session history. It's per-project (and specific to the machine) Claude pretty aggressively and frequently writes stuff in there. It uses MEMORY.md as sort of the index, and will write out other files with other topics (linking to them from the main MEMORY.md) file. It gives you a convenient way to say "remember this bug for me, we should fix tomorr…

> Persistent directory at ~/.claude/projects/{project-path}/memory/, persists across conversations

I create a git worktree, start Claude Code in that tree, and delete after. I notice each worktree gets a memory directory in this location. So is memory fragmented and not combined for the "main" repo?

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