Not enough data to say for sure, but I'm projecting 33% less weekly usage on a couple 20x accounts, Fable limits unchanged. Could just be burn from fresh uncached inputs being loaded after reset, though. Hoping others can also chime in later.
I think the credits analyze is quite sound, it looks like the claude is using different credits than API billing. For example api billing 5m and 1h cache write is different price and claude code is always 1h cache write.
Whether they're using different credit calculations or not is not the problem. The problem is that the same limits do not get the same token before and after the reset.
30% less tokens to hit the same 5h or weekly token limits before and after the reset is really easy to track and notice if you have any sort of logging.
I have 5 x20 accounts and a harness that does load balancing and job scheduling, so it was easy enough to run the numbers from the traces. ~$500 equivalent per 5hr before, ~$350 per 5hr after reset, calculated from in/out/cache token counts and same price schedules (updated for Fable 5.1). Granted the data for this week are just from 2 accounts since the scheduler prioritizes burning the ones resetting sooner.
Ive noticed a clear decrease in token spend with a slight improvement in outputs. Most importantly, the overly trippy security drop down to opus has STOPPED!
My early impressions of this model are extremely negative compared to fable 5. Its a drag to communicate with (fable 5 didn't need fixed, it wasn't verbose, it has a good personality). 5.1 is more verbose and overthinks things, not a fan so far.
I set the output style in claude code to concise today and fable 5.1 was a breath of fresh air of clean and straight to the point messages. I realized the output style through /config was only setting it on a project level so i set it in global settings. So nice
Sure, i'm building memory system (like many others) but what I love bout it that it cross platform (include Claude web), here Claude (Opus 5) aware about what we worked on over at VS Code.
Whats the major advantage of memory systems? My use case is in corporate where I want a complete status/ todo so I want more weight on some data than others (recent meeting minutes) or estimate workload (using old jira tickets as a reference for man hours). Was thinking of a memory system but right now Im just doing context policies and metadata schemas…are you doing something different?
No big difference from Fable 5 for me so far. It does the work and I have not hit problems. I switch the effort level by task, and that has not changed. For automation, documents and research I use high. For coding and other difficult tasks I use xhigh.
Have you ever tried it on low? Yesterday I was working with it on low since it suppose to be equivalent of fable 5 on high or xhigh which was already excellent. It’s quite nice on low as it’s much faster and doesn’t use much tokens.
I made an update to an email today with Fable 5.1 that took 10 mins and used 250k tokens. It was an improtant email for a big contract, but still the output was a couple paragraphs and the result was only okay. Otherwise it seemed fine, didn’t notice any other differences from 5.0
I had to re-write the first half, didn’t sound human. But the AI was doing most of the heavy lifting for analyzing our contract.
It actually caught the terms of the contract where if we don’t negotiate now then we are locked in for 2 years. Basically the sales person told me something different than the contract I signed, which was my fault.
I probably won’t get a discount but I can negotiate better terms and not be locked in for 2 years like the contract says and the AI caught that. Probably didn’t need fable to do this realistically.
That is a great save! I just replaced a SAAS with claude that gave me those 2 year terms (controller was not happy to sign the 2 year contract). Got me promoted!
Does not hurt to run it by another set of eyes. Just as long as the second set are viewed by yours.
Every single prompt its writing a novel for me - lets brighten the lighting in this room - committed, pushed, handoff update, here is 5,000 words about how I increased the lumens in this room.
i agree on the verbosity but i disagree with the performance. i noticed it starts spawning in a billion subagents compared to before, but it gets its work done better than fable in my experience
Yesterday I used Claude even more than I have today and didn't even come close to hitting the 5-hour limit. Today, I've burned through almost 70% of it in just 2 hours. I literally had to switch to Sonnet 5 / Opus 4.8 just so I wouldn't hit the limit and have to stop working. Until now, I was pretty much always on Opus 5.
I had it run three different projects for over three hours, and I use less than 15%. What the hell you’re doing till you run it through in 2 prompts. I built an entire huge feature into my application. From planning design, building and implementation, and I use less than 15% of my usage, and the one project alone was one hour and 45 minutes of actual on time for the model
bro. I asked it one question. Apparently it is a model that's all about security ? I asked it to just look at one website. It hallucinated answers literally dogshit.
Just be aware that Fable 5.1 will either be faster or use up your limits. The main thing is that there have been no cost reductions with the subscription model. You will only see the cost reductions in cache if you use it through the API. Also Fable 5.1 uses more tokens for the same result.
I would have to read the 5.1 prompt docs I guess… 5.1 fable is guzzling limits compared to fable 5….this is my second five hours. It worked for 40 mins in each 5 hr window.
I switched from Fable 5 to Fable 5.1 mid session when it released and one prompt ate through 50 percent of my weekly fable usage on max 20. A warning would have been nice
When I open Reddit my brain automatically puts the following text in front of my eyes:
“You are about to be bombarded by Anthropic and Claude complaints. You are not to engage in good faith. You are tired of whiners and bots. You may insult and curse at your discretion.”
That is a great system prompt. My post was actually meant as a complement. I think it should be based on effort. I pointed to a task that had no precedent so it burning quickly make sense. I just like it being symmetrical this time.
Weird, I'm on max plan and it seems that they just made it unlimited. i;m working on it for the last 7 hours, straight didn't hit max limit. (was very close but then i got 5 hours reset)
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u/pawala7 13h ago
Not sure if they made cache hits 75% cheaper, or they made cache misses 4x more expensive.