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1M context is now generally available for Opus 4.6 and Sonnet 4.6

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Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#92

Earlier quoted context omitted.

I'd been on Codex for a while and with Codex 5.2 I: 1) No longer found the dumb zone 2) No longer feared compaction Switching to Opus for stupid political reasons, I still have not had the dumb zone - but I'm back to disliking compaction events and so the smaller context window it has, has really hurt. I hope they copy OpenAI's compaction magic soon, but I am also very excited to try the longer context window.

1m context in OpenAI and Gemini is just marketing. Opus is the only model to provide real usable bug context.

Source? I ask because I use 500k+ context on these on a daily basis.

Big refactorings guided by automated tests eat context window for breakfast.

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#94
post #51

Earlier quoted context omitted.

All of those things are smells imo, you should be very weary of any code output from a task that causes that much thrashing to occur. In most cases it’s better to rewind or reset and adapt your prompt to avoid the looping (which usually means a more narrowly defined scope)

A person has a supervision budget. They can supervise one agent in a hands-on way or many mostly-hands-off agents. Even though theres some thrashing assistants still get farther as a team than a single micromanaged agent. At least that’s my experience.

Just curious, what kind of work are you doing where agentic workflows are consistently able to make notable progress semi-autonomously in parallel? Hearing people are doing this, supposedly productively/successfully, kind of blows my mind given my near-daily in-depth LLM usage on complex codebases spanning the full stack from backend to frontend. It's rare for me to have a conversation where the LLM (usually Opus 4.6 these days) lasts 30 minutes without losing the plot. And when it does last that long, I usually become the bottleneck in terms of having to think about design/product/engineering decisions; having more agents wouldn't be helpful even if they all functioned perfectly.

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#96
post #8

Noticed this just now - all of a sudden i have 1M context window (!!!) without changing anything. It's actually slightly disturbing because this IS a behavior change. Don't get me wrong, I like having longer context but we really need to pin down behaviour for how things are deployed.

You can pin to specific models with —-model. Check out their doc. See https://support.claude.com/en/articles/11940350-claude-code-... . You can also pin to a less specific tag like sonnet-4.5[1m] (that’s from memory might be a little off).

sure - but the model hasn't changed. I'm specifying it explicitly. But suddenly the context window has. I'm not using Claude Code, this is an application built against Bedrock APIs. I assume there's a way I could be specifying the context window and I'm just using API defaults. But it definitely makes me wonder what else I'm not controlling that I really should be.

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#97

Earlier quoted context omitted.

Is it ever useful to have a context window that full? I try to keep usage under 40%, or about 80k tokens, to avoid what Dex Horthy calls the dumb zone in his research-plan-implement approach. Works well for me so far. No vibes allowed: https://youtu.be/rmvDxxNubIg?is=adMmmKdVxraYO2yQ

Since I'm yet to seriously dive into vibe coding or AI-assisted coding, does the IDE experience offer tracking a tally of the context size? (So you know when you're getting close or entering the "dumb zone")?

The 2 I know, Cursor and Claude Code, will give you a percentage used for the context window. So if you know the size of the window, you can deduce the number of tokens used.

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#98
im guessing this is why the compacts have started sucking? i just finished getting me some nicer tools for manipulating the graph so i could compact less frequently, and fish out context from the prior session.

maybe itll still be useful, though i only have opus at 1M, not sonnet yet

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#99
post #92

Earlier quoted context omitted.

1m context in OpenAI and Gemini is just marketing. Opus is the only model to provide real usable bug context.

Source? I ask because I use 500k+ context on these on a daily basis. Big refactorings guided by automated tests eat context window for breakfast.

i find gemini gets real real bad when you get far into the context - gets into loops, forgets how to call tools, etc

Re: 1M context is now generally available for Opus 4.6 and Sonnet 4.6

#100

Earlier quoted context omitted.

I've found compactation kills the whole thing. Important debug steps completely missing and the AI loops back round thinking it's found a solution when we've already done that step.

For me, Claude was like that until about 2m ago. Now it rarely gets dumb after compaction like it did before.

oh, ive found that something about compaction has been dropping everything that might be useful. exact opposite experience
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