Parameter Update: 2026-20
"papal infallibility" edition
All things considered, it's been a surprisingly slow week. We were also expecting a new GPT model this week, but it appears it got pushed a week? Anyway, two more weeks until WWDC, which should be fun.
Anthropic
Claude Opus 4.8
Anthropic keeps pushing out incremental model updates for Opus. This week brought version 4.8, which is designed to be more honest than 4.7 and capable of longer horizon work. Perhaps more interesting than the single-digit gains in the majority of benchmarks, are some of the other news around the model drop:
- They made Fast Mode 3x cheaper (still only available at API pricing, not included in the Claude subscription though)
- "Workflows" in Claude Code, which allow the model to write orchestration scripts for subagents (playing into the ability to keep on task for longer-running work)
On my timeline, I've seen people make fun of how workflow specifically will absolutely wreck your usage limits (which makes sense), while the fast mode price drop was almost universally beloved. As for the model itself: In my experience, the main issue with Opus 4.7 wasn't actually dishonestly, it was the ability to realistically understand it's own limitations, so fingers crossed this might also be addressed.
Introducing Claude Opus 4.8: it builds on Opus 4.7 with sharper judgment, more honesty about its own progress, and the ability to work independently for longer than its predecessors.
— Claude (@claudeai) May 28, 2026
Available today at the same price. pic.twitter.com/EufxL7T1kb
Big funding round
After the compute expansion news of the past couple weeks, it's no wonder Anthropic would be looking for cash to keep the game running. This week, they announced (as far as I can tell) the highest valuation private financing round of all time - 65 Billion at almost $1 Trillion valuation.
We've raised $65 billion in Series H funding at a $965 billion post-money valuation, led by @AltimeterCap, Dragoneer, @Greenoaks, and @sequoia.
— Anthropic (@AnthropicAI) May 28, 2026
This investment will help us advance our research and expand our capacity to meet growing demand for Claude.
People more interested in financial markets might want to argue if this represents a failure of the IPO process, but I'll leave it at:
Wow, new number just dropped. Congrats on the new number. Looks like it’s bigger than the old number. That’s good. Can’t wait to see the next number. I love the number business
— JT (@jiratickets) December 18, 2025
It's also hilarious that this and the increases in Anthropic's compute capacity through the xAI deal mean that the Mythos "security concerns" are now starting to disappear, with Anthropic targeting a rollout "in the coming weeks". Irony aside, I am excited that we'll finally get the model, but remain concerned about what pricing for it might look like.
glad to know Mythos' safety concerns have been addressed right as Anthropic also secured tens of billions in inference compute 👍 https://t.co/efDBwAYsQj
— Minh Nhat Nguyen (@menhguin) May 28, 2026
Collaboration (?) with the Pope
In what is probably the most unexpected collab of the past couple weeks, the pope has released an extremely long text discussing the implications of AI on society - partially supported by Anthropic.
the pope and anthropic's co-founder just stood together at the vatican to release "magnifica humanitas," the first ever catholic teaching on AI
— Ole Lehmann (@itsolelehmann) May 25, 2026
yes, you read that right. the full ceremony was 2 hours.
here's the most interesting things for you to know:
1. this is the biggest… pic.twitter.com/BdXgv1L2Zz
Given the text was quite critical at times, some of the responses have been hilarious.
the pope wrote a 42,000 word manifesto declaring war on AI. we are so freaking back. https://t.co/mOVLRNnWef
— Georgia Coley (@artwithinpod) May 25, 2026
While I have seen some good discourse around it, the most hilarious finding is that some AI detection models actually flagged portions of the text as being AI generated. I also loved people arguing if this text means they can get a religious exemption from being forced to use AI at work?
In my new post, I argue that the first papal encyclical *on* AI is also the first papal encyclical substantially *by* AI.
— Linch (@LinchZhang) May 26, 2026
(1/x) pic.twitter.com/XrFMTcst5r
Nvidia RTX Spark
Nvidia officially entered the consumer CPU space at Computex this week, announcing the RTX Spark (previously floating around under the N1/N1X codenames). This isn't Nvidia's first CPU rodeo (remember Tegra?) and the chip is essentially a consumer/OEM-tuned variant of the same Grace Blackwell silicon behind the existing GB10 / DGX Spark, rather than anything genuinely new. It pairs a 20-core Arm-based Grace CPU (co-developed with MediaTek) with a Blackwell RTX GPU, an NPU, and up to 128GB of unified memory, with Nvidia pitching ~1 petaFLOP of FP4 AI performance and the usual full-stack treatment (CUDA, DLSS 4.5, Reflex, G-SYNC, ray tracing). It's bound to make a splash in the Arm PC market and put Qualcomm (and now Apple and AMD/Intel) under renewed pressure.
For a company looking to justify its increasingly ludicrous valuation, "officially" planting a flag in the CPU space is a smart move, even if it's mostly in the interest of vertical integration. Jensen leaned all the way in, reportedly quipping that Nvidia "used to be a GPU company" and framing this as reinventing the PC "for the era of personal AI agents".
As for how this actually shakes out: the splashy launch and big claims arrived right on schedule. Pricing wasn't announced, but the partner lineup tells the story — ASUS ProArt, Dell XPS, HP Omnibook, Lenovo Yoga, MSI Prestige, Microsoft Surface Ultra — so expect this to land firmly on the "expensive" side of things. Windows on ARM remains the open question: Nvidia and Microsoft are pushing native ports and a new agent runtime ("OpenShell"), but anything not natively ported still leans on Prism emulation, which I expect to be rough around the edges at best based on past experience. With systems not shipping until fall, availability remains the other open question - what good do these systems do if most people can't afford them, and those that can't get one?
Nevertheless, I'll be cautiously optimistic that, at the very least, this might encourage all other players to lock in moving forward.
Nvidia’s new ARM-based chips: N1 & N1X specs LEAKED 🚨
— Shishir (@ShishirShelke1) May 31, 2026
N1X:
- Up to 20 CPU cores
- Up to 48 SMs GPU (6144 CUDA cores)
- Up to 128GB LPDDR5X memory
- 45W to 80W TDP
N1:
- Up to 12 CPU cores
- Up to 20 SMs GPU (2560 CUDA cores)
- 18W to 45W TDP
The full N1X uses the same… pic.twitter.com/0ebmIkpYFg