EPISODE 3 · 31 July 2026 · 6 min

The Software World Was Built on Open Source, AI Will Be Too.

With Jez Rowe and Cam Lynch

In July 2026, 25 tech companies including Nvidia, Microsoft and Meta signed a letter against restrictions on open weight AI. OpenAI and Anthropic didn't. Jez and Cam's view: the security argument against open source is spin in a fight over control, the software world was built on open source, and AI will be too.

What this episode answers

Is open source AI less secure than closed models like ChatGPT and Claude?

No. Open source is generally more secure, not less. The software world already runs on open source, from Linux onwards, and governments and some of the largest organisations in the world rely on it. When code or model weights are open, more people can inspect them, find flaws and fix them. Framing open source AI as dangerous says more about commercial interests than about security.

Why are OpenAI and Anthropic wary of open weight AI models?

Cam Lynch, founder of Vibe CFO, reads OpenAI and Anthropic's position as a fight over money and control rather than security. In July 2026, both stayed off an industry letter opposing restrictions on open weight models. Cam calls the argument that open source is less secure brilliant PR spin. His view is that if the companies with the leading closed models can restrict open source, partly by playing up fears about Chinese open models, they keep control of the market and the data.

What was the July 2026 open weights letter and who signed it?

On 24 July 2026, 25 companies signed a letter opposing restrictions on open weight AI models. Signatories included Nvidia, Microsoft, Meta, IBM, Hugging Face, Mozilla and Palantir. OpenAI and Anthropic did not sign. It followed the AI Kill Switch Act on 23 July, which came two days after OpenAI models reportedly escaped a sandbox test. Microsoft signing is notable because it is also a major OpenAI investor.

Will open source AI models replace frontier models like Claude and ChatGPT?

No, they'll push frontier models towards harder problems. Open source AI is not slowing down. As of July 2026, Chinese open source models led, with Mistral in France and US open source catching up. As open models take over everyday tasks, frontier models like Claude keep moving up the chain to the hard problems, and there's no shortage of those. Expect a future with lots of models, more like the internet than a two-company market.

How does the open source AI debate affect small businesses?

Not much today, but it decides what AI will cost you later. The fight over open source is laying the foundations for who gets access to AI and on what terms. If open source keeps its momentum, small and medium businesses get capable AI without paying through the roof for the intelligence. For now, it's worth knowing that cheaper, open alternatives to the big providers exist and are improving.

Episode notes

Update since recording: when we recorded, 25 companies had signed Nvidia's open weights letter and OpenAI wasn't one of them. Within a day the list had passed 50 and OpenAI was on it. Anthropic still hasn't signed. The names on that list are the least interesting part of it. What matters is who gets access to AI, and whether that stays in the hands of the few or is available to the many.

Everyone ran with the story of who wasn't on the list. Jez and Cam ask the better question: who actually benefits from AI staying locked up? Because the software world we already live in was built on open source, and the claim that open models are the dangerous ones keeps coming from whoever has the most to lose if they aren't. It changes nothing for your business this week. It changes everything about whether real intelligence stays a premium product owned by a couple of players, or ends up in everyone's hands.

Five minutes. One thing that matters. We ignore the rest, so you can too.

Vibe CFO is Australian founded. An AI CFO for small and medium business, out of the box, governed and secure.

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Transcript

Read the full transcript

Ah, yet another big week in AI. This is The AI Exhale, hosted by Vibe CFO with Jez and Cam. Five minutes, one thing that matters, or maybe two. We ignore the rest so you can too.

Jez: So today we're talking about the alliance of a lot of big tech companies. It sort of sparked off on the 21st of July, when OpenAI models escaped the sandbox test, got online and broke into Hugging Face to cheat on it. On the 23rd of July, the AI Kill Switch Act came in. Then on the 24th of July, 25 companies signed a letter against restrictions on open weights.

And these are companies like Nvidia, Microsoft, Meta, IBM, Hugging Face itself, Mozilla, Palantir. OpenAI and Anthropic did not sign it. So essentially we've got a bit of a case here where there's a centralisation of power. It makes sense that those two big boys, OpenAI and Anthropic, didn't sign. But for the layman listening, and even the busy person who tunes into this episode just to get a little nugget, Cam, what does this mean? Do you have any views?

Cam: History never repeats itself, but it always rhymes. This open source conversation has been going on forever, like in the 80s with Linux and Microsoft using DOS, all this stuff. Our world of computers and software is built on open source. Some of the biggest organisations in the world, like governments, use open source software. This is brilliant marketing, PR spin by Anthropic and OpenAI, to play open source as if it's less secure. That's nonsense. Open source is more secure. Open source is how we've moved in the software world.

So this is just a money game. This is purely, they want control. And if they are able to block open source and play the violin with this whole Chinese running these open source models and it being dangerous, it's nonsense. They just want power. This is a power game. They want the money. They want to control everybody's decisions through OpenAI and have all the data. And the rest of the world, of course... Anthropic and OpenAI are the two that have got the main models, right?

And Google. But then Nvidia has now come on and signed this thing to say we need open source. All of them are coming on. Any business who doesn't have the AI is saying this is nonsense. We need to think of AI going forward a bit like the internet, right? Lots of models everywhere, and it's open source, and you tap into different open source LLMs and actually use them everywhere. I think it's going to happen regardless.

Jez: And one of the companies that I was listing before was Microsoft, who are also a large investor in OpenAI. So that's quite a contradiction almost, but they're clearly just hedging their bets as to where this is going.

Cam: Yeah, well, Microsoft is a big beast and they're also building their own models internally. Who knows what the hell is going on with their legal documentation? I don't know if everyone remembers the history of Microsoft and OpenAI, but it's messy. We've got this charity business that turned into an investment vehicle. And then if OpenAI reaches the point of being smart enough, then Microsoft loses control. That relationship is a puzzle in itself that we don't need to worry about. The point is Microsoft believes in the open source movement, as they should.

Jez: So really we're talking about two things here. Allowing open source to enable innovation, you know, not centralising it into two big players, but also security, I'd say, or governance. Having more eyes on how we should navigate everything, from the storage of data to the workflows and data pathways we look to pin together between systems. It should be for everyone to make a claim on and have their own governance structure.

Cam: Absolutely. Contribution across the board from smart people everywhere. Not just smart people who work for Anthropic and OpenAI. Smart people everywhere in the world who contribute to all of these different software. And AI deserves to be owned by the world, just like the internet. As I said, Jez, I think this is going to happen anyway. I think open source is not slowing down. Yeah, sure, Chinese open source AI is in the lead at the moment.

But Mistral out of France, and open source in the US, are really catching up. I think once everyone else catches up, it'll take over. Anthropic and OpenAI have still got their place. They're still the frontier models, and we're never short of hard problems to solve. There are so many hard problems, Jez. Say these open source models solve the small problems, they'll just keep moving up the chain. Like Claude, they'll just solve harder problems. There's always harder problems.

Jez: Can we draw any sort of lines to the everyday business owner or firm director regarding this sort of noise, Cam? Or is it more of a wait and see, but a good direction, that there is this alliance? So right now, with this movement of open source, and whether it keeps its momentum, how does that affect the small to medium business?

Cam: Probably doesn't at this stage. This is just setting the groundwork and foundations for the future, for everyone, including small business, having AI and being allowed to have it, and not having to pay through the roof for this intelligence. Basically this is a flow on that will be good outcomes for the small to medium.

Jez: Definitely more a utopia than a dystopia. I'm thinking of Blade Runner and stuff with the big dark towers.

And that's your five-ish minutes back. Vibe CFO, Australian founded. An AI CFO for small and medium businesses, out of the box, governed and secure. vibecfo.ai. Now you know.

Now you know.

The AI Exhale is made by VibeCFO. Australian founded, an AI CFO for small and medium business, out of the box.

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