Modal adds native dynamic batching, boosting Whisper throughput 2.8x

Modal has added native dynamic batching support, letting inference functions group requests via a single @modal.batched() decorator with max_batch_size and wait_ms parameters. On OpenAI's Whisper large v3 running on an A10G, a max_batch_size of 64 raised throughput from ~1.2 to ~3.3 requests per second per container and cut inference cost by 65%.