Merging this PR will improve performance by ×2.1

⚡ 4 improved benchmarks
✅ 16 untouched benchmarks

Performance Changes

_{Comparing serialize-pydantic (880ad19) with master (1e78a36)}

📝 Docs preview

Last commit 880ad19 at: https://061e4ca0.fastapitiangolo.pages.dev

Modified Pages

• https://061e4ca0.fastapitiangolo.pages.dev/advanced/custom-response/ - (before)
• https://061e4ca0.fastapitiangolo.pages.dev/advanced/response-directly/ - (before)
• https://061e4ca0.fastapitiangolo.pages.dev/how-to/general/ - (before)
• https://061e4ca0.fastapitiangolo.pages.dev/tutorial/response-model/ - (before)

A bit stupid question maybe, but If I was already returning pydantic model and response model was that model, I will still get performance boost?

Yes, you will 🚀

@tiangolo currently we are using response_model will it also performance improvement ?

@router.get("/sample", response_model=Sample)
def sample_endpoint(
    *,
    db: Session = Depends(deps.get_db),
    store_id: int,
    user_id: Optional[int] = None,
):

@pmsmanishchauhan Yes it will

Same but for parsing HTTP body: #13951