Comment by bluegatty
4 days ago
Spark is the 'same model and harness' but on Cerebras.
Your intuition may be deceiving you, maybe assuming it's a speed/quality trade-off, it's not.
It's just faster hardware.
No IQ tradeoff.
If you toy around with Cerebras directly, you get a feel for it.
Edit: see note below, I'm wrong. Not same model.
> Today, we’re releasing a research preview of GPT‑5.3‑Codex‑Spark, a smaller version of GPT‑5.3‑Codex, and our first model designed for real-time coding.
from https://openai.com/index/introducing-gpt-5-3-codex-spark/, emphasis mine
You're right. It's funny because I kind of noticed that, but with all of these subtle model issues, I'm so used to being distraught by the smallest thing I've had to learn to 'trust the data' aka the charts, model standings, performance, etc. and in this case, I was under the assumption 'it was the same model' clearly it's not.
Which is a bummer because it would be nice to try a true side-by-side analysis.
> It's funny because I kind of noticed that
It's less funny when you consider that you were very confident about it, yet now it seems you haven't even bothered to run the model yourself, as you'd notice how different the quality of responses were, not just the speed.
Kind of makes me ignore everything else you wrote too, because why would that be correct when you surely haven't validated that before writing it, and you got the basics wrong?
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