I use Argon regularly.

Pretty big Gemini fan - but IMO Argon is universally worse for coding than Astra or Opus 5.5 (un-nerfed).

I strongly prefer Gemini's output compared to anything else. So I typically use Argon to either direct other agents or explain something without psychobabble.

Argon/Carbon have by far the lowest hallucination rates, so IMO it serves as the best bullshit shield from other models.

In terms of implementation (and especially design), it's far behind Astra and Opus, and I'm sure Fable will make that gap even larger.

Argon/Carbon may give you not-the-best advice, but they are far less likely to just flat-out-and-completely lie to you.