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Phi-3 does well in benchmarks but underperforms IRL; for example, Phi-3-Medium gets beaten badly by Llama-3-8b on the LMSYS Chatbot Arena despite doing better o
by reissbaker 2y ago
Phi-3 does well in benchmarks but underperforms IRL; for example, Phi-3-Medium gets beaten badly by Llama-3-8b on the LMSYS Chatbot Arena despite doing better on benchmarks.
Gemma's performance if anything seems understated on benchmarks: the 27b is currently ahead of Llama3-70b on the Chatbot Arena leaderboard.
- ertgbnm 2y agoI suspect Phi-3 is not robust to normal human input like typos and strange grammar since it's only trained on filtered "high quality" tokens and synthetic data. Since it doesn't need to waste a ton of parameters learning how to error correct input, it's much smarter on well curated benchmarks compared to its weight class. However, it can't operate out of distribution at all.
- reissbaker 2y agoPersonally vibe checking Phi-3-Medium is worse in my experience, no matter how well you spell — it just isn't good at all compared to Llama3-8b, despite being significantly larger in param count. I suspect the "high quality tokens" were "high quality" in the sense that they resembled tokens one might encounter in benchmarks, and not "high quality" in the sense of representing human-like input/output.