Sakana AI Preps for Potentially Japan’s Biggest-Ever IPO — 5ch: “Just Slapping a Made-in-Japan Label on Someone Else’s AI”

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The story

Sakana AI (Minato, Tokyo), an AI development company, is reportedly moving ahead with preparations for an initial public offering (IPO), aiming to list on the stock market as early as autumn 2027. If realized, it would be Japan’s first-ever listing by a company dedicated solely to generative AI, and reports suggest its market capitalization at the time of its IPO could exceed Mercari’s roughly ¥680 billion, potentially making it one of the largest-ever deals among Japanese startups. Goldman Sachs is said to have been brought on as an advisor for the IPO. On 5ch, discussion centered on the fact that the company’s flagship model is an additionally-trained version built on top of “Kimi K2.6,” an open model released by the Chinese company Moonshot AI — sparking debate over whether it can really be called a “domestically made” AI, and over the lack of disclosed revenue figures.

Sakana AI (Minato, Tokyo), an artificial intelligence (AI) development company, has begun preparations for an initial public offering (IPO). With both the Japanese and U.S. markets in mind, it aims to go public as early as autumn 2027. If things proceed as planned, it would be the first listing by a company dedicated solely to generative AI in Japan. Its market capitalization at the IPO price could exceed Mercari’s roughly ¥680 billion, potentially making it one of the largest deals ever among Japanese startups.

The company recently brought on Goldman Sachs as an advisor for the IPO. As for the listing market, the Tokyo Stock Exchange…

Source: nikkei.com / Original article here

What people said

2AnonymousNov 9, 2026 17:50
Is it even profitable?
4AnonymousNov 9, 2026 18:17
By the way, the CEO is a foreign national born in Hong Kong and raised in Canada
6AnonymousNov 9, 2026 18:35
An IPO cash-grab
Anyone who actually understands and uses AI wouldn't give this a second glance
7AnonymousNov 9, 2026 18:52
It's obvious you'd lose money buying in now, so I'm not buying
8AnonymousNov 9, 2026 18:54
I can see a spectacular collapse coming… (nervous sweat)
9AnonymousNov 9, 2026 19:11
Didn't they already lose credibility over that garbage paper?
I mean, this company doesn't have the chops to build its own LLM anyway
Borrowing someone else's and mixing it up a bit is about the best they can do
11AnonymousNov 9, 2026 19:14
Sounds like the AI version of AnGes (the Japanese biotech firm infamous for hype that fizzled into a stock scandal)
12AnonymousNov 9, 2026 19:22
I read the Shukan Bunshun article on this — even granting that some people in the US have pointed out how low AI rollouts' success rate and business impact tend to be, that doesn't mean Sakana AI has actually solved that problem
Don't get that point mixed up
13AnonymousNov 9, 2026 19:23
The base model is Moonshot AI (literally "Dark Side of the Moon" in Chinese).
Just a re-skinned version of Chinese AI.
14AnonymousNov 9, 2026 19:29
Didn't they just do some extra training on Qwen or something and call it a homegrown Japanese model?
16AnonymousNov 9, 2026 19:30
Re: #14
Here's what they themselves say:

> Sakana AI's current model, "Sakana Namazu," is based on "Kimi K2.6," an open model released by Moonshot AI, with Sakana AI's own proprietary post-training applied on top.
15AnonymousNov 9, 2026 19:29
Anno from Team Mirai (the AI-engineer-turned-politician's party) would probably shoot this down completely
21AnonymousNov 9, 2026 20:00
And here they are just slapping a "Made in Japan" label on someone else's AI… lol
22AnonymousNov 9, 2026 20:03
Guess this is an IPO cash-grab for a fraudulent AI.
23AnonymousNov 9, 2026 20:04
Since they didn't build the base model themselves, once the open model they're riding on stops getting updated, they'll go stale and be finished
24AnonymousNov 9, 2026 20:18
Re: #23
It's an easy gig: just slap some subsidy-funded extra training onto whatever the latest model happens to be, every time one drops
25AnonymousNov 9, 2026 21:23
Fish?

Lame name.
34AnonymousNov 10, 2026 11:47
Re: #25
You don't know? It's a company name that reflects the original concept of using LLMs collectively, like a school of fish — Swimmy-style — rather than as one individual (Swimmy = the classic picture book about little fish banding together).
Once you're trying to go global, the name itself doesn't matter at all.
Thinking it's lame is the lame part.
Besides, with most of the top execs being non-Japanese, a Japanese name is anything but uncool.
You probably don't even know about Anthropic's whole haiku thing, do you? (Anthropic names its models after poetic forms — Haiku, Sonnet, Opus.) It's always the clueless ones who call things lame.
What's actually lame about Sakana isn't the company name — it's the substance of what they're actually doing.
26AnonymousNov 9, 2026 21:39
Gyogyo! (a fish-pun exclamation, in the style of TV fish expert Sakana-kun)
27AnonymousNov 9, 2026 22:55
Sakana, sakana, sakana~ (riffing on the famous children's song from the Osomatsu-kun anime)
28AnonymousNov 10, 2026 03:48
I can't find any revenue figures anywhere — is this really going to grow into IPO-ready shape within a year?
30AnonymousNov 10, 2026 08:28
Re: #28
That's exactly it
"Japanese startup" is just a label here
If there's none of the investment and profit reporting normally demanded of American startups, then the IPO comes down to nothing more than the Tokyo Stock Exchange's own say-so
Which then raises the market's own question: so what about the TSE's governance and disclosure standards?
29AnonymousNov 10, 2026 07:03
Founded in Tokyo in 2023 by Llion Jones (CTO), a former Google AI researcher and co-author of "Attention Is All You Need" — the hugely important paper that laid the groundwork for generative AI — along with David Ha (CEO), who led Google Brain's Tokyo team, and Ren Ito (COO), a former diplomat.

(´・ω・`) A diplomat!?
31AnonymousNov 10, 2026 11:25
Funny how you can go public even when users don't give you a second glance
32AnonymousNov 10, 2026 11:37
Is this because the company's a government favorite or something?
The old-school media is hyping this up big time
Especially TV Tokyo and Nikkei
I bet a lot of clueless people are going to get swept up in this
35AnonymousNov 10, 2026 13:11
I trade through Daiwa Securities,
so would I be better off waiting on the Sakana AI IPO lottery
rather than buying Mercari or Kioxia stock (•́ω•̀)?
Well, I don't even know the IPO offering price yet ┓(^ワ^)┏

Kazuko Fukuda, former death-row fugitive: "IPOs — Danger! ⚠ Daaanger! (ノ°ο°)ノ"
36AnonymousNov 10, 2026 13:44
Is anyone actually going to buy into Japanese AI development?
Feels like it's shaping up to be another IPO cash-grab
37AnonymousNov 10, 2026 14:23
Re: #36
Like LINE, Yahoo, or Docomo,
it'll probably just ride a congratulatory pop on day one and peak right there lol
40AnonymousNov 10, 2026 14:59
Re: #36
I honestly thought they'd just collect the subsidies and quietly fold, like some kind of vested-interest racket
38AnonymousNov 10, 2026 14:33
When you say "Japanese AI company," Preferred Networks (PFN) is the one that comes to mind
39AnonymousNov 10, 2026 14:58
As far as AI goes, Japan's behind the US and China anyway, right? Japanese-language ability aside

Background and key points of this topic

Sakana AI was founded in 2023 by David Ha, a former Google researcher, along with Llion Jones (a co-author of the Transformer paper) and Ren Ito, a former diplomat. As pointed out in the thread, its flagship model is additionally trained on top of an open model released by the Chinese company Moonshot AI — a “post-training” approach that’s common among AI companies that don’t build their foundation models entirely from scratch, and isn’t unique to Sakana AI. The report that Goldman Sachs has been brought on as an IPO advisor is, at this stage, still just preparatory-stage information, and neither the listing timing nor the projected market cap is a confirmed figure. That said, it is a fact that these IPO reports are surfacing at a stage when disclosure of revenue and profitability remains thin, and whether its post-listing valuation will truly surpass Mercari’s remains uncertain.

*This article is excerpted and summarized from the 5ch (Business News+) thread “[Company] Sakana AI Preps for IPO — One of Japan’s Biggest-Ever Startup Deals, a First for a Dedicated Generative AI Firm.”

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