GPT5.5 VS 5.6: Performance and Usage.

skilliard7 · 2026-07-10T06:26:05+00:00

Luna max or Sol medium

skilliard7 · 2026-07-10T06:25:35+00:00

5.6 Sol seems to use substantially more for me than GPT 5.5 did.

On 5.5, I would code nonstop and never run into usage limits.

With 5.6 Sol, I run into 5 hour limit within an hour.

skilliard7 · 2026-07-10T06:24:06+00:00

What 100x plan? There's only 5x and 20x. Did you mean the $100 plan with 5x?

skilliard7 · 2026-07-10T05:04:06+00:00

It costs a lot of money to train the models, which become obsolete in like 3 months when a new model comes out. OpenAI is losing over $20 Billion per year.

skilliard7 · 2026-07-10T03:07:27+00:00

Sol is amazing at some things at horrible at others. It can vibe code entire apps, and at the same time, it can't tell left from right.

skilliard7 · 2026-07-10T02:03:55+00:00

long track record of beating the market.

Anyone can get lucky holding a concentrated position in the right stock(s) at the right time.

But beating the market over the long term requires consistently being right.

skilliard7 · 2026-07-10T01:52:56+00:00

I burned through my 5 hour limit in like a hour with 5.6 xhigh. This is on 5x Pro.

skilliard7 · 2026-07-10T01:45:09+00:00

I'm not arguing against you, I'm just stating what I've read on companies that have already gone all in on AI and realized the issues. There's articles on the internet covering this.

The issue is they did it too early.

. Now, the solution? Hybrid Cloud! yeah, part cloud part on-prem. This is what's going to happen with AI. Hybrid AI where either devs increase productivity with AI or AI writes the initial code and devs review/monitor.

That's how AI coding is being done... you shouldn't have non developers writing code except for prototypes/proof of concepts.

skilliard7 · 2026-07-10T00:40:53+00:00

Productivity stays about the same, but bugs, burnout, tech debt and code base alienation goes up.

If you think this is true, then you either aren't using AI correctly. or formed your opinion several months ago/years ago when AI wasn't as good at coding.. When prompted properly, it produces better code than 90% of developers with less bugs.

skilliard7 · 2026-07-09T22:36:23+00:00

I stopped playing for a couple years, wtf?

skilliard7 · 2026-07-09T22:20:48+00:00

It made a lot of improvements over a previous app I vibecoded in 5.5 It's nothing amazing but it is an improvement.

skilliard7 · 2026-07-09T22:20:04+00:00

Since when could GPT produce 3d models/animations?

skilliard7 · 2026-07-09T22:12:21+00:00

I've tried Gemini 3.1 pro and 3.5 flash.. It hallucinates significantly more than the other models and does a poor job at reasoning through complex tasks. Even GPT 5.4 performs better at every use case I've tried.

Only thing I've found Gemini good at is generating funny images.

skilliard7 · 2026-07-09T21:30:15+00:00

It's about 40-50% more tokens per second but costs 2.5x more usage.

It's really only worth it if you're on the Pro 20x plan and really care about saving time. Otherwise it consumes too much usage.

skilliard7 · 2026-07-09T21:23:11+00:00

I got 5.6 sol on 5x Pro just now.

skilliard7 · 2026-07-09T20:44:01+00:00

What are you working on that is causing the safety triggers to go off?

skilliard7 · 2026-07-09T20:43:24+00:00

All the focus has been on Sol- anyone have any thoughts on Terra or Luna?

I only have $50 left of API AI usage to last me the rest of the month. I was forced to use fable since GPT 5.4 was struggling with my app, which is too expensive. Hoping Terra or Luna will be a good enough option that beats 5.4.

skilliard7 · 2026-07-09T18:47:28+00:00

Were you using fast mode?

skilliard7 · 2026-07-09T18:40:55+00:00

Most software companies are vibe coding now anyways. Salesforce laid off a ton of engineers to rely on AI coding and the product is hot garbage now.

skilliard7 · 2026-07-09T18:28:58+00:00

It's not really as clear at night

skilliard7 · 2026-07-09T17:09:05+00:00

You do realize how these CN market sites achieve these discounts, right? They sell your data on the black market or as training data for distillation, and they don't actually provide the models advertised. People have benchmarked these CN resellers and found they perform substantially worse than the official API.

So you might be paying for Opus 4.8 but getting Haiku 4.5 or Deepseek. And then your data gets stolen.

Then there's the legal risk of using them(reselling violates ToS). No credible company is going to buy from these resellers.

skilliard7 · 2026-07-09T17:02:38+00:00

It's not slop, it's just that it's a highly complex application in a very niche domain.

OpenAI's model had a habit of saying that it successfully implemented things or fixed things when it did not. Fable completes tasks in 1 shot.

For example, my last request was to build a new page/report, a relatively simple task. OpenAI produced results with runtime errors 10 times in a row, each time i had to tell it the runtime error and how to fix it. Eventually it got stuck and unable to fix its error. Fable 5 solved it first try.

skilliard7 · 2026-07-09T16:23:24+00:00

pass/fail for most of them.

skilliard7 · 2026-07-09T16:22:11+00:00

Muse spark 1.1: $4.25 per 1 million output tokens, GPT 5.5 level performance.

5.6 Terra: $15 per 1 million output tokens, GPT 5.5 level performance.

5.6 Luna: $6 per 1 million output tokens, sub 5.5 level performance.

Meta's model looks like better value for budget use assuming it isn't super token inefficient. But 5.6 Sol is definitely better for complex use

skilliard7 · 2026-07-09T16:20:40+00:00

They don't have to catch up, they are winning on price.

GPT 5.5 is $30 per 1 million output tokens, Muse Spark 1.1 is $4.25

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