I've been working with agents all year, but 5.6 Sol was some sort of sweet spot for me. Something about how it communicated verbally and its engineering instincts just clicked for me, and I was able to somehow predict it and jam with it. Like a colleague you click with. It's the first model I've gotten attached to. I'm concerned that whatever model supercedes it, while technically better, just won't feel quite as natural to work with. And this makes me feel very professionally vulnerable to the labs. I miss the days when my crucial tooling came from companies as reliable and predictable as, say, Jetbrains.

Completely agree. I've been using 5.6 still even with Astra available to me for most tasks. It's funny how much of this is just "vibes" because I cannot quantify what it is. Astra is definitely better when I have an ambitious feature, but in like 9/10 tasks I prefer working with 5.6 Sol. A few weeks ago when the limits were seemingly higher, having 5.6 on fast mode was a good time.

I tend to agree. it's by far the best coding model i've ever worked with, including astra and if i remember correctly fable, and it's unbelievably smooth at just getting the work done and communicating in simple terms.

if GPT 6 Sol is just 5.6 at half the price it will be everything i really ever wanted.

Similar for me. gpt-5.6-sol high has been my go-to for months. One of the reasons I'm pushing myself to try open models more is because it lends some level of guarantee I can continue to use the same tool as long as I want to. And I think we may just be getting to the point the open models are >= 5.6 Sol for coding.

Same. In fact I found 6 Astra to be a downgrade in situations where I didn't need the extra intelligence.

Same. The way I would describe it is that I can mostly leave 5.6 Sol overnight and trust that it makes good progress, maybe stumbling a bit and needing some correction for the remaining 20%.

If I leave Astra overnight, I'll wake up with three new different projects, each of them 20% done and having nothing to do with my original goal.

Yeah 5.6 Sol is what got me to switch from Anthropic. I couldn't deal with Claude's Ted Talk responses to literally everything. Sol has been nice and concise and just stays out of the way.

Not only was 6 worse the 5.6 Sol for my me, but it went through my Plus usage in minutes, while I could cruise for hours with 5.6. It would churn on a basic prompt for minutes and then just give up on usage limits.

Highlight and lowlight of my week was successfully convincing the OpenAI support chat robot to give me a refund for the month for my issues with 6 chewing threw my usage with no output.

It's a shame the labs don't open source their models after deprecating them. I get why, but, it's a piece of internet history I hope is preserved.

Agreed, Sol has been my favourite since it released. I tried Opus 5 for a while and it made me want to throw my laptop out of the window.

I had this experience as well, but after rewriting my agent instructions it has been far better. I believe Astra’s “token efficiency” translates to “don’t research as much” which caused it to make poorly informed architectural decisions.

GPT does seem to stay out of the way and get things done. Only thing I notice is that the question tool/elicitation doesn't work that well any more so the thing doesn't stop to wait for input.

But I wonder if that's intentional because it can keep computing while you are answering, so long as your steer aligns well enough with the direction it wants to go. Better than letting a cache go cold and burning compute on bringing it all back up.

There are multiple models competing with 5.6sol on AA but none of them have the same feel (intuition,taste,judgement) - actually they are very far behind. I would say open source models are farther behind the the big labs than the benchmarks make you believe.

This is 100% my experience. I rarely reach for Astra as we speak.

Agreed! I found it excellent: - Relatively fast (especially compared to Opus 5) - Non-verbose prose, both in interaction and as code comments - Good code quality

Like you said, it felt very natural to work with. Opus 5 is way too slow and verbose for me, I find I get distracted and annoyed with it.

Opus 5.5 seems a LOT closer so far to what I liked about 5.6 Sol but we'll see

Maybe I need to upgrade from DeepSeek Flash 4.1.

How are people using 5.6 Sol? API pricing? Subscriptions?

I like because DeepSeek 4.1 Flash because I never experience quota issues, and it's still cheap and mostly good enough.

This has been my experience for a year. Same with Opus models. This is how I think this tech will be best used in the long term - finding the one you vibe with most. Much like IDEs!

Same. Sol was actually the reason I upgraded my plan to the $100 one. Hoping GPT-6 Sol is the same.

I felt that was about 5.5. IMO 5.6 Sol was overindexed: more verbose, prone to overengineering.

> companies as reliable and predictable as, say, Jetbrains.

Except they were not for past few years as they misfired on the attempt to compete with vscode. That had a big impact on pycharm, which seemed starved for resources for so long. The company eventually declared a year of Django, but even that failed to really make an impact.

Arguably, Jetbrains had first insight into AI based code completion via rapid rise of the TabNine plugin but missed that opportunity also.

I agree. Sol followed my instructions well and wrote good code.

Agree as well and I had a much worse experience with GPT 6 Astra for some reason.

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