Jeff HassemerCEO, FirestarterMarketing.ai · The Strategy Architect | Agency Accelerator | Architecting Bold Strategies | AI + Marketing That Scales | Founder @ FireStarterMarketing.AI

The New Frontier Model Race #substack #shorts

5 Jun 2026 · 1 min

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1:26

In this short commentary, Jeff Hassemer reviews the latest wave of frontier AI model releases—Claude Opus 4.8, GPT‑5.5, and Gemini Flash—highlighting Opus 4.8’s dramatic improvement in coding tasks, which he says outperforms GPT‑5.5 in benchmark indexes. He speculates that Anthropic may be holding back while OpenAI is responding quickly with GPT‑5.5, suggesting a rapid escalation in model capabilities, especially as code begins to generate more code. Hassemer also notes recent policy developments: a U.S. executive order imposing a 30‑day window for frontier models to be submitted to the government for testing before public release, and Dario Amodei’s public call for a global slowdown of AI development, though he doubts such measures will be adopted. Overall, the piece frames the frontier model race as accelerating rather than decelerating.

Chapters

Claude Opus 4.8, GPT-5.5, Gemini Flash, and hardware leaps all happened this week. I've been playing with Opus 4.8 on my coding side of things. It's a game changer. It's very different than 4.7. It's huge. And it showed to, in the indexes, to outperform GPT-5.5. And I think there's more to come. I feel like Anthropic's holding back a little bit. But it's, you know, then OpenAI with GPT 5.5 Instant fought back and we'll see where they end up going now that they've had this coding push and the code is generating its own code. We'll see what's going to happen in terms of the move there. But this is, you know, it's funny that the models and the frontier models are actually speeding up. Not slowing down. Although, I mean, we had a couple other things that, that hit into this. There was an executive order that had stated that a 30-day window for the Frontier models to give the models to the government for testing before release. And actually Dario from Anthropic did call for a global slowdown of this development, but I don't know if anything like that is going to happen.