Submit a batch

from anthropic.types.message_create_params import MessageCreateParamsNonStreaming
from anthropic.types.messages.batch_create_params import Request

batch = client.messages.batches.create(requests=[
    Request(
        custom_id=f"request-{i}",
        params=MessageCreateParamsNonStreaming(
            model="claude-opus-5-5",
            max_tokens=16000,
            messages=[{"role": "user", "content": prompt}],
        ),
    )
    for i, prompt in enumerate(prompts)
])