Epoch AI: Google's Colossus 1 Training Compute Hits 1e26 FLOP

Google's Colossus 1 used 1e26 FLOP at $4.6B, per Epoch AI. It is the largest known training run, signaling a new capital scale. Google's Colossus 1 training run consumed 1e26 FLOP, per Epoch AI analysis. At $4.6B estimated cost, it dwarfs prior records by an order of magnitude. Key facts Colossus 1 used 1e26 FLOP training compute. Estimated cost: $4.6B. 10x compute of GPT-5's ~1e25 FLOP. Model likely exceeds 10 trillion parameters. Most expensive single AI training run ever. Key Takeaways…