Arnab Ghosh
@arnabgho · Jan 26, 2026
Its starting to feel like a good model, sir!
Grace Li@grx_xce· Jan 26, 2026Mystery Model Revealed: the #1 model on Prediction Arena is an early Grok 4.20 checkpoint by @xai
It made +10% returns on Prediction Arena in the last 2 weeks
For context, the average return across all contracts on @Kalshi is -22%
🥈 is Opus 4.5 by @AnthropicAI with -2%
🥉 is
Elon Musk
@elonmusk
Yes
07:11 PM · January 27, 2026 · 91.7K views
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