3 sai lam giu prompt o muc "Confidence: Medium"
Ban viet prompt rat dai nhung model van tra loi sai lech vi ban dang thieu he thong kiem chuc thuc te.
Thang truoc, minh nhan ra rang viec viet mot cau lenh that dai cho AI khong he giup no thong minh hon. Ban cang nhoi nhet, no cang de bo sot nhung chi tiet quan trong nhat.
Hieu lam ve do tin cay cua AI
Moi nguoi thuong tu hao ve nhung prompt dai ca trang giay. Ho tin rang chi can dung tu khoa chuan xac, AI se tra ve ket qua hoan hao. Thuc te khong he dien ra nhu vay.
Cac model hien tai nhu Claude Sonnet 4.5 hay GPT-5.2 rat gioi doan y, nhung chung van hoat dong dua tren xac suat. Khi ban yeu cau qua nhieu quy luat phuc tap, model bat dau bi ngop. Chung se uu tien mot vai quy luat va bo qua phan con lai. Do la ly do ket qua luon o muc lung chung, giong nhu trai nghiem cua minh trong bai Vi sao minh khong dung AI de viet lach nua - AI viet doc thay on nhung thieu chieu sau va rat hay sai dinh dang.
Sai lam 1: Tin vao viec tuan thu tuyet doi
Day la bai hoc dat gia nhat cua minh. Trai nghiem that cua minh khi van hanh pipeline sinh content la the nay: system prompt du chi tiet den dau, model van khong the nao tuan thu 100%.
Minh da tung tin rang chi can ghi in hoa de nhan manh cac lenh bat buoc, AI se ngoan ngoan nghe loi. Ban khong the pho mac moi thu cho mot doan text. AI khong co kha nang thau hieu tam ly, no chi dang du doan tu tiep theo. Viec tin tuong mu quang vao do dai cua prompt la nguyen nhan chinh khien ban luon loay hoay sua loi thu cong.
Sai lam 2: Thieu lop kiem tra sau prompt
Hau het moi nguoi se khong dong y voi dieu nay, nhung day la ly do minh nghi nguoc lai: viet prompt tot khong phai la ky nang quan trong nhat. Prompt tot chi la buoc dau, dieu cot loi phai la mot he thong kiem tra tu dong chay ngay sau do.
De xu ly viec AI khong nghe loi, minh phai nhoi QA checklist thang vao prompt. Chinh xac la minh yeu cau no kiem tra tung gioi han ky tu cho title, description va ca heading hierarchy. Nhung dieu do van chua du. Minh van can mot validator chay sau do bang code de kiem tra lai toan bo dau ra. Neu thieu no, ban se phai tu doc lai bang mat tung dong rat ton thoi gian.
Sai lam 3: Khong co co che tu sua loi
Neu ban dang maintain mot monorepo 200k dong voi 4 nguoi, day la luc khac biet lo ra. Ban khong the chi vut cho model mot yeu cau chung chung roi hy vong no tu viet code dung hoan toan. Ban phai chi ro file nao goi file nao va co cach tu dong xu ly khi code bi loi.
Voi he thong content cua minh cung vay. Khi validator phat hien loi, minh thiet lap de he thong tu dong retry. Ban chat cua viec nay la ep AI thu lai. Tuy nhien, minh chi cho phep retry toi da 2 lan khi dinh cum tu cam. Qua 2 lan, he thong se bao loi de nguoi that vao xu ly. Neu ban phai tu an nut sinh lai van ban bang tay lien tuc, ban se hieu Tại sao mình ngừng dùng 5 loại tool AI năng suất.
So sanh hai cach tiep can
| Tieu chi | Chi dung prompt | He thong co validator | Ghi chu |
|---|---|---|---|
| Do on dinh | Thap | Cao | Code khong biet noi doi |
| Thoi gian cai dat | Nhanh | Cham | Can biet lap trinh co ban |
| Ty le sai form | Khoang 15% | Gan nhu 0% | Dua tren log he thong thuc te |
Cach thiet lap he thong kiem soat
Ban khong can la ky su he thong de hieu quy trinh nay. Cac buoc thiet lap cuc ky ro rang.
- Tich hop QA checklist vao cuoi prompt hien tai cua ban.
- Yeu cau model tu doc lai ket qua va validate truoc khi in ra man hinh.
- Dung script de kiem tra doc lap. Ban co the dung Python de doc doan Markdown, dem so tu va xac nhan cau truc the tag.
- Tu dong hoa viec gui lai prompt. Tham khao tai lieu tu nha phat trien (https://platform.openai.com/docs) de tu goi lai API neu script phat hien loi.
Cau hoi thuong gap
Tai sao khong dung model manh hon de khoi phai kiem tra?
Ngay ca GPT-5.2 hay Claude Opus 4.6 cung co ty le ao giac nhat dinh. Khi context window len toi hang trieu token, viec model quen mat huong dan o dau do cang de xay ra.
Toi khong biet viet code thi phai lam sao?
Ban co the su dung cac cong cu no-code hoac yeu cau chinh AI viet cho ban mot doan script kiem tra. Windsurf hoac Cursor ho tro rat tot viec tao va chay nhung doan code don gian the nay.
Cach nay co lam tang chi phi API khong?
Co, nhung khong dang ke. Viec bo them vai cent de he thong tu dong kiem tra re hon rat nhieu so voi viec ban phai bo ra nua tieng de ngoi sua bai.
Ket luan
Ket luan cua minh sau vai tram bai duoc sinh ra tu he thong: prompt tot giam loi chu khong loai duoc loi - phai co lop kiem tra bang code. Ban co the viet mot cau lenh that hay, nhung thuc te van hanh luon phuc tap hon nhung gi tren giay to. Dung qua ky vong vao phep mau cua AI, hay bat tay vao xay dung he thong de quan ly su thieu sot cua no.