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#infrastructure#infra#project#vcs#seed#money#com#layer#tensorzero#last

Discussion (86 Comments)Read Original on HackerNews

GabrielBianconi34 minutes ago
I'm the co-founder and CEO of TensorZero.

We started the company two and a half years ago, and raised $7.3m in 2024 (announced only almost a year later). We've spent less than half of this amount.

Earlier this week we came to the difficult decision to wind down the project. The open-source repository remains available on GitHub (Apache 2.0) but won't be actively maintained by the team moving forward.

devops0002 minutes ago
I have been reading your LinkedIn posts for the last years saying that you were the future, now you are shutting down for failure.
ianm21812 minutes ago
Is there anything your willing to share on what went into the decision/ what you learned about trying to build this kind of product?
faeyanpiraat26 minutes ago
Are there any lessons around the why which may be publicly shared ?
LeonMabout 2 hours ago
The title makes it sound like they just did a seed round, but the seed round was announced in August of last year [0].

Their website landing page is now also showing the software is no longer maintained. No mention of why they made this decision, my best guess is they burned through their seed money and were unable to attract further investments.

[0]: https://www.tensorzero.com/blog/tensorzero-raises-7-3m-seed-...

pnwabout 2 hours ago
The company was started in January 2024, so the seed financing is likely a roll-up of two years of fundraising. $7m for ~30 months of running an AI startup in NYC is not that unusual.
RobotToasterabout 2 hours ago
Burning through $7m in 9 months? That's an impressive amount of avocado toast.
rfgplkabout 1 hour ago
$7m actually isn't a whole lot, especially if they hired a (larger) engineering team. Assuming their cali based, that's easily 150-200k per engineer, a team of 20 easily eats through that. Idk the specifics, but I don't the organization was fradulent, it could also be that they're going commercial and no longer want to maintain their oss stack
DiggyJohnsonabout 1 hour ago
20 engineers would be incredibly aggressive growth for such a young company with that amount of capital, no?
wtfleming33 minutes ago
150-200k is also just the employee’s salary, the actual cost to the company is significantly higher, you need to multiply that by something like 1.5 to get the fully loaded cost, people are expensive!
vips7L41 minutes ago
I thought ai was writing all the code. What do they need engineers for?
whateveracct25 minutes ago
if you hire 20 engineers with your seed round you are either very confident you'll be able to use them to justify another raise soon

or you're incompetent

GabrielBianconi18 minutes ago
We raised in 2024 and only burned through ~$3m of it, mostly on salaries to support a small team.
yettabout 2 hours ago
And AI tokens
RobotToasterabout 2 hours ago
Avocado intelligence.
apiabout 1 hour ago
That would be a lot still. That’s a lot of money.

I’d bet on extreme irresponsibility.

mmaunderabout 2 hours ago
And poached eggs.
raverbashingabout 1 hour ago
Those Claude tokens are not cheap you know /s
hopppabout 2 hours ago
The project was probably just built to raise funds, a bait, and after thats done it's dead.
jnovekabout 1 hour ago
Were the thousands of commits and hundreds of feature branches over the last 9 months just to keep up appearances, then? Were the 850 people who forked it in on the scheme, too?
pqtywabout 1 hour ago
Well.. if that's it it's not really much to shown for if you spent $7 million on it.
armchairhackerabout 1 hour ago
Did Claude make the commits and branches?

(Honestly I don’t think so here, but I predict that will happen eventually)

sailingparrot5 minutes ago
Do you understand that when you raise money it doesn't go into your personal account? Its not like you can move this money in your retirement account and sail into the sunset.
Blackthornabout 1 hour ago
Sometimes things just fail.
realsarmabout 2 hours ago
You can call it a bait but where is VCs due diligence for this. Most VCs where out there defending their infra layers investment. Just look at YC batches and see the inflated number of infra startups.
jnovekabout 2 hours ago
Right? I’ve been through due diligence and it’s neither a quick nor simple process, even for seed.
Noaidiabout 1 hour ago
A great way to launder money then?
ajrossabout 2 hours ago
"Failure" is the expected median though. You can't due-diligence your way out of "startup ran out of runway"!

The discussion here isn't about funding, it's that there's a presumptively useful community tool which got abandoned because its owners took their toys and went home when the money ran out (instead of making a sincere effort at transitioning to community governance). That's on the IP owners being selfish jerks and/or grifting losers. It's not the VC's fault.

root-parentabout 2 hours ago
The due diligence report just come back:

The report says, the CEO and founder, is a Ketamine addicted weirdo, who does Nazi salutes in public, is know to have at least 24 kids, and lives in an isolated farm in Texas, with at least 5 to 7 female partners, and got sued for calling a guy who saved kids a Pedophile.

You in?

kmac_about 2 hours ago
About one year ago, I created an LLM gateway with metrics, provider fallback and switching, tools support, injecting, etc. etc., and unique features like acting as an MCP tools client and server, all streamed, with low latency.

It was a simple project in terms of technical complexity. I didn't publish it as I counted several similar projects in the field.

Putting $7.3M into such a project would make sense only in the case of a precise growth plan with already declared customers and an promising sales funnel. There is no technical moat.

jnovekabout 1 hour ago
The calculus in “buy or build” has shifted for me over the last six months especially. If I can make an agent build it, I get the version that’s tailored for me.

> It was a simple project in terms of technical complexity.

That’s the thing, though. The version I build for myself sheds all the features that get in my way. I don’t share them either because they’re only useful for me.

Perhaps in the future big tech projects will be delivered with a common “core” and the expectation that agents fill in the use-specific stuff.

rfgplkabout 1 hour ago
> The calculus in “buy or build” has shifted for me over the last six months especially. If I can make an agent build it, I get the version that’s tailored for me.

I feel like this is really going to change the software industry moving forwards. Historically it was tedious and time consuming to actually develop tailored dev tools which is why so many organizations relied on third party solutions. When nowadays you can easily half bake something in a few hours and get it working, tailored _specifically_ to your needs.

jaggederestabout 1 hour ago
> Perhaps in the future big tech projects will be delivered with a common “core” and the expectation that agents fill in the use-specific stuff.

I suspect so, the headless / "api/cli only" tools like CRM are pretty big right now and I don't think we've seen the end of that trend, probably more like just beginning.

zackifyabout 1 hour ago
That's literally every project around AI. All the agent sandboxes. Hosting cron jobs that just hit ai rest endpoints for model completions etc
jdw64about 2 hours ago
VCs think, 'Apps are risky, infrastructure is safe,' so they invested in AI infra.

"infra is safe" Hmm, but that wasn't a good idea. because if an open source infrastructure project like TensorZero gets shut down this quickly, won't they start to realize that those investment theories are also risky?

The difficult thing about AI infrastructure is that, unlike other industries, it will not become fragmented. It will likely remain tied to specific big tech models. What does this mean? It means that because AI models are not yet standardized, the infrastructure itself is actually riskier. In other words, the privatization of standards is happening.

The challenge with AI infrastructure is that an independent, stable standard layer has not formed, unlike in other software infrastructure markets such as databases, web servers, cloud, and containers. Over time, those ecosystems developed relatively standardized interfaces and operational layers. But the LLM ecosystem is still evolving rapidly. Models themselves change fast, APIs differ, pricing differs, context windows, tool calling, structured output, evaluation, fine tuning, caching, routing, everything keeps changing.

So even if an infrastructure startup tries to build a common abstraction layer across multiple models, before that common layer can stabilize, big model or cloud providers like OpenAI, Anthropic, Google, AWS, or Azure can just absorb the same functionality directly. In the end, AI infrastructure is at high risk of becoming an attached feature of model providers rather than solidifying as an independent layer.

But if a startup that raised 7.3 million dollars fails this quickly, who would trust and invest in such things? That aside, it seems AI startups are all the rage these days. I also want to learn AI and get funded like that. Does anyone here trust me enough to invest? About one hundredth of that would probably be enough

rfgplk43 minutes ago
A few comments.

> VCs think, 'Apps are risky, infrastructure is safe,' so they invested in AI infra.

First off, this isn't even infra in the infra sense of the word. Infrastructure implied something physical, a pure software product can almost never be considered 'infra'. A tool maybe, but not 'infra'.

VCs can also be irrational and driven primarily by personal connections rather than reason. I didn't do a deep dive in this project/leadership, but often who you know is some important than what you produced. There's a reason why a lot of VCs go for the old motto of "I'd rather invest in an A team with a C product; than invest in a C team with an A product".

realsarmabout 1 hour ago
I also believe the same. Many VCs are obsessed with moat that they clearly got wrong. To me the value created at app layers are so much that gives them the flexibility to diversify their infra layers. Good harnessed do not depend on a specific model provider or memory layer or etc that when it is taken down like anthropic fable they get no risk exposure. Many even after growing train their own model like what cursor did with composer. There’s many more examples in other verticals like manus, superhuman, fireflies, lovable, replit, cursor, nouswise, cline windsurf and kilo but many are concentrated in coding because again I think VCs have preferred this definition of moat.
jdw6435 minutes ago
Due to the echo chamber effect, our opinions get reinforced, which can lead to biased conclusions, so it gives me pause. But your comment is so eerily similar to my own thoughts that I'm writing this reply.

I agree that most people misunderstand the concept of a 'moat' and become obsessed with that misunderstanding. People tend to think that only technical 'coding skills' which they can easily understand constitute a moat. But in reality, the moat is the entire workflow across the product's lifecycle, including coing skills. In that sense, infrastructure workflows are nothing more than 'the most easily replaceable consumables.' The essential purpose of infrastructure is to pursue 'standardization,' which paradoxically means a state of 'zero switching costs' where customers (app developers) can switch at any time to a better API or a big tech built in feature. Pure technology that doesn't latch onto the messy real world domains of customers will inevitably be absorbed without resistance by massive capital.

In some ways, customer lock in at the application layer, or even the fan culture around a product, creates emotional lock in. The end user app that provides a specific workflow integrated into users' daily routines can overcome even technical inferiority through 'experience' and 'emotion.' Technology can be copied, but the user identity attached to a tool is what I think a real moat is.(That is also the reason I love Windows.)

The example you gave, Cursor's Composer, is exactly the case I'm talking about. I think Cursor is inferior, and I don't think its Composer model feature is all that great either. But Cursor has a passionate fan base, and users who choose Composer as the best value for money no longer care about absolute technical performance or benchmark scores. They are captivated by the 'speed of experience' of code being completed quickly as they intended, and the 'frictionless workflow' the tool provides.it's not the company that builds the best AI model that wins, but the company that wraps 'good enough technology' in 'great UX' and dominates users' habits. That is how apps dominate infrastructure, and that's the moat you and I are thinking about.

That said, this conclusion is probably too hasty and has many flaws. Still, your thoughts are so similar to mine that I'm leaving this reply. Thanks for the great comment. Have a good day

pqtywabout 1 hour ago
Infra is perhaps somewhat safe but realistically it's a really low margin capital intense business long-term unless you can lock-in customers with hundreds of services like AWS. So not a lot of space for a huge ROI.

> are all the rage these days

Are they? Overall it seems kind of tame compared to 2020-21 since VCs are somewhat risk average outside of a few outliers. Funding looks much more concentrated these days.

jdw64about 1 hour ago
You're right. Looking at recent indicators, there are more stable investments than I thought. But please understand that, as a human, I haven't achieved ROI in terms of marriage, relationships, a stable job, etc., so my perspective might be mixed with a bit of envy
indigodaddyabout 1 hour ago
Just use Plexus [1]. The maintainer is not trying to be a hero or raise seed dollars or even really trying to promote it. He's just making an excellent, useful product. (Unaffiliated, just a happy user). It's not a full-on "LLMOps" platform (whatever that is), it's just a proxy that works very well and has some nice features.

[1] https://github.com/mcowger/plexus

pavlovabout 2 hours ago
This is the claim in the repo readme that presumably unlocked the VC investment:

“TensorZero is used by companies ranging from frontier AI startups to the Fortune 10 and fuels ~1% of global LLM API spend today.”

One percent seems like a lot. Anyone on HN use this?

spmurrayzzzabout 1 hour ago
I used it, but only briefly to evaluate it. It had some overlap with a tool I built myself, was curious if any of the extra features would be useful.

Ultimately I found the data model and UI to be both cumbersome and unintuitive. Langfuse ended up being the observability tool I went with instead over the one I built (and still use today).

sebmellenabout 2 hours ago
Generally speaking, every YC company post ~2020 is forced to make pathologically false claims to compete in the (fundraising) market.
croesabout 1 hour ago
Rounded to the nearest percent >0
lostmsuabout 1 hour ago
ceil(market_share)
ojosilvaabout 1 hour ago
Just tell AI to write your copy and that's what you get, overhype-as-a-service.
bz_bz_bzabout 2 hours ago
Seed was in Aug ‘25 and website simply says the project will no longer be maintained: https://www.tensorzero.com/
GabrielBianconi16 minutes ago
Seed was in '24 actually but we only announced in '25.
DonHopkinsabout 2 hours ago
Obviously they upgraded, bought a dash, and moved on to https://www.tensor-one.com/
_ache_about 2 hours ago
And new Github profile too.

https://github.com/TensorOne

hmokiguessabout 2 hours ago
There was a high severity advisory last week https://github.com/tensorzero/tensorzero/security/advisories... though these days can't even tell if this is related or just routine
GabrielBianconi23 minutes ago
This was coincidental. Someone reported the issue last week, we fixed it, and published the advisory.
MonstraGabout 2 hours ago
For people like myself, who didn't understand the timing of events - raised in august 2025, archived yesterday without any notice.
SamDc73about 1 hour ago
I'm glad I used litellm in my last project

https://github.com/BerriAI/litellm/

hek2schabout 4 hours ago
Most VCs avoided application layer believing it is too risky with few player would emerge as winner over application layers calling them GPT wrapper (now called Harness) and pouring money into infra layer. Would love to see your opinion about how this thesis would turn out going forward.
_pdp_about 2 hours ago
Not my experience. I think most VCs thesis is around the application layer - not much around the infrastructure.

That being said, while I am biased, there is a lot of work around infrastructure so calling it "just a wrapper" massively underestimates the effort - this is purely from my own experience building this space.

Besides, if it is true how come OpenClaw is spending so much money on a open source project. Salaries alone will cost 7 digit sum for a harness and I have first hand experience dealing with companies doing exactly this.

Shameful plug - we are building cbk.ai, better known today as chatbotkit.com.

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variety8675about 2 hours ago
Open source powers the business of many large corporations and they give essentially nothing back - why would maintainers refuse an offer for money in this environment?
feverzsjabout 2 hours ago
At least it's not a pig butchering scam.
BoredPositronabout 2 hours ago
Holy burn rate.
villgaxabout 2 hours ago
Just switch to Bifrost already
rvzabout 2 hours ago
But it is written in Rust™.
shevy-javaabout 2 hours ago
Guys - skynet is winning the war. We oldschool humans are left behind here.

Wasn't GitHub once a place for humans? Now we could rename it SkyHub.

pannyabout 2 hours ago
LOL, there's a sucker born every minute!
dilawarabout 2 hours ago
https://www.qwantz.com/index.php?comic=4483&mobile=1 couldn't resist.

PS: Someone won't become a trillionaire with this attitude.

pannyabout 2 hours ago
That was funny, I'm not even mad. Upvote for you.
jdw64about 2 hours ago
"I was assigned sucker at birth"