Ethereum Foundation researcher Justin Drake announced that the zkSync Airbender prover can now generate complete L1 block proofs using just two RTX 5090 GPUs. This advancement suggests a significant increase in the L1 Gas Limit, potentially reducing L2 fees to near zero. Ethereum co-founder Vitalik Buterin praised this as a "huge milestone" but highlighted a common issue where similar systems show a 60-fold performance gap between average and worst-case scenarios. He recommended increasing the cost of complex proof operations like RSA through Gas Repricing, rather than engaging in a hardware race, to ensure that even with higher Gas Limits, ordinary blocks remain easy to prove, promoting safer and fairer scaling.