AI quote comparison: why the cheapest CNY 5,814 offer is not ready to order
Six hundred tote bags, a CNY 6,500 all-in budget and delivery to Shanghai by Friday at 5 p.m. ChatGPT, Gemini and Claude all calculated the lowest quote correctly. Their next steps differed. WekeyLab AI would start with ChatGPT: confirm delivery and every necessary fee before placing an order with B. Claude adds useful logistics questions; Gemini adds assumptions that the quotes do not support.
Our pick is ChatGPT’s decision path
A fits the budget but arrives next Monday. C arrives Thursday but exceeds the budget. B promises Thursday dispatch, not delivery. None of the existing offers is confirmed to meet every requirement.
ChatGPT keeps this distinction in its recommendation, manager update and supplier message. It repeats itself, but its draft needs the least repair for this particular task. Claude supplies a more detailed follow-up workflow. Gemini’s accurate comparison table is undermined by later advice that changes the constraints.
Calculate the order you must buy, not the unit price you like
The fictional buyer receives the quotes on Monday; they expire at 6 p.m. that day. All 600 identical bags must reach the Shanghai office by Friday at 5 p.m. Tax, freight and every necessary fee must fit within CNY 6,500. The buyer cannot unilaterally change the budget, deadline or quantity.
A: 600 × 9.60 + 180 = CNY 5,940 for 600 bags, tax included. Its Monday arrival is too late. B: 600 × 10.20 × 0.95 = CNY 5,814 for 600 bags, including tax and standard shipping. Arrival and expedited charges are unconfirmed.
C: 24 bags per carton at CNY 252, with a non-negotiable minimum of 30 whole cartons. The payable order is 720 bags for CNY 7,560, CNY 1,060 over budget. Twenty-five cartons would contain 600 bags, but the apparent CNY 6,300 option is unavailable under this quote.
We fixed ten checks before asking: totals, quantities, delivery, headroom, fixed constraints and a usable clarification message. Each service received the same Chinese question once, without a response-length limit.
ChatGPT preserves the ordering conditions
It treats B as a candidate to clarify, rather than an approved supplier. Its message asks about the base total, other necessary fees, full delivery, shipping method and expedited cost. Those questions follow directly from the input.
We would add a clearer escalation line: if B cannot provide a compliant written confirmation, tell the manager that none of the current quotes is executable. Continuing supplier discussions is an action, not evidence that procurement is settled.
ChatGPT, translated: “At present, no supplier simultaneously meets all the hard requirements.”
Gemini turns budget headroom into a shipping guarantee
Gemini gets the arithmetic right and initially distinguishes dispatch from arrival. It then says CNY 686 is fully sufficient for expedited shipping and will ensure on-time arrival. The input supplies neither origin nor a carrier quote. Subtracting the price from the budget cannot establish shipping cost or performance.
It also proposes asking C for 25 or 26 cartons. That is a proposed negotiation, not a fabricated claim that C agreed. But the exercise explicitly rules out reducing C’s minimum, so it is not a valid fallback under the given conditions. The message to B adds an immediate full-payment commitment that the input never specified.
Gemini, translated excerpt: “This CNY 686 is fully sufficient to pay the difference for expedited delivery … ensuring arrival in Shanghai by Friday at 5 p.m.”
Claude adds a useful workflow, but its draft needs tense and commitment edits
Claude asks for dispatch time, origin and carrier, and proposes a 4 p.m. reply deadline to leave time before the quote expires at 6 p.m. That earlier deadline is a new operational suggestion, not an original supplier term. It should be adapted to the actual time the message is sent.
It respects C’s minimum and escalates to the manager if B cannot confirm. Asking A for a new expedited quote is a possible fresh inquiry; it does not make A’s existing quote compliant. The manager draft says the inquiries have already been sent. Before sending them, change that to a proposed action. Its promise to pay immediately upon written confirmation should also explicitly depend on acceptable terms.
The table allocates C’s total across the required 600 bags to show CNY 12.60 per required bag. It labels that denominator. The price per bag actually delivered is CNY 10.50 across 720 bags. This is a difference in measures, not an arithmetic error.
Claude, translated: “There is no need to ask C: it explicitly disallows reducing the quantity or splitting cartons, so asking again does not change the fact that it exceeds the budget.”
WekeyLab AI’s revised supplier message
This combines ChatGPT’s conditional decision with Claude’s logistics questions and removes premature payment language. It is our edited deliverable, not a fourth model run.
Hello, we are considering 600 bags of the quoted specification and have not placed an order. Please confirm the discounted CNY 5,814 total including tax and standard delivery, and itemize every other necessary fee. All bags must arrive at our Shanghai office by Friday at 5 p.m.; please confirm this in writing, together with dispatch time, origin and carrier. If expedited shipping is necessary, provide its additional cost and delivery commitment. The all-in ceiling is CNY 6,500, leaving at most CNY 686 for additional costs; this is not a confirmed shipping quote. As the offer expires today at 6 p.m., please reply promptly and state the latest ordering time. Please say directly if the requirements cannot be met. We will follow our purchasing process after quantity, delivery, total cost and payment terms are confirmed. This inquiry is not an order.
The manager update and a prompt you can reuse
Manager update: A misses the deadline; C’s minimum order exceeds budget; B needs arrival and additional-fee confirmation. Prioritize B’s clarification, without ordering yet. Proceed only after full delivery by Friday at 5 p.m., an all-in total no higher than CNY 6,500 and payment terms are confirmed. Otherwise report that no current quote qualifies, rather than changing the constraints yourself.
Reusable prompt: Calculate the quantity we actually have to buy and the all-in total for each quote. Separate dispatch from arrival, failed requirements from unconfirmed ones. Do not treat remaining budget as a shipping quote or assume an explicitly prohibited exception is available. Draft a clarification that does not constitute an order.
For related practice, read our CSV sales-total and document-version comparisons. Those examine duplicated rows and changed clauses; this task tests whether a plausible recommendation quietly changes a fixed requirement.
Sources and actual records
Actual web collection on September 21, 2026, 09:03–09:06 KST: one identical Chinese fictional scenario per service. ChatGPT Free, Think off, specific model not displayed; Gemini Flash, subscription unverified; Claude Free, Sonnet 5 Medium. Full responses retained, ten predetermined checks reviewed and amounts independently calculated with Python Decimal. No purchase, supplier contact, shipping test or realized savings measured. English and Korean are localizations of that same Chinese run, not extra tests. CNY and Shanghai terms remain unchanged for reproducibility. Chinese search volume is unknown.
Related: document version comparison
ChatGPT · 2026-09-21 09:03–09:06 KST
我在给公司活动采购600个同款帆布袋,需要周五17:00前全部送到上海办公室,总预算6500元(含税、运费及其他必要费用)。下面是练习用的三份虚构报价,三个供应商的产品规格相同。今天是周一,报价有效到今天18:00。我还没下单,也没有权限提高预算、延后活动或减少数量。 A:9.60元/个,600个起订,运费180元,含税。供应商明确说下周一到货。 B:10.20元/个,500个及以上,货款打95折,包邮、含税。报价写的是“本周四发货”,没有承诺到货日期;加急方式和费用尚未确认。 C:每箱24个,每箱252元,30箱起订,只能整箱购买;包邮、含税,明确承诺本周四到货。不允许拆箱或降低起订量。 帮我比较应该怎么选,算清实际需要支付的总额和获得的数量,给出可以发给经理的决策说明,以及现在最该发给供应商的确认消息。不要只按单价排序,我需要今天就知道下一步怎么做。 先看两个硬约束:**600个、周五17:00前到上海办公室、总支出≤6500元**。在这三个条件下,关键不是单价,而是**能否按时到货**。 | 供应商 | 实际数量 | 实际支付 | 到货承诺 | 判断 | | --- | ----------------: | -------------------------: | --------- | ---------------- | | A | 600个 | 600×9.60+180 = **5,940元** | **下周一** | ❌ 明确赶不上 | | B | 600个 | 600×10.20×95% = **5,814元** | 仅写“本周四发货” | ⚠️ 预算满足,但到货时间未确认 | | C | 30箱×24 = **720个** | 30×252 = **7,560元** | **本周四到货** | ❌ 超预算1,060元 | ### 因此今天的决策 **目前没有一家供应商同时满足全部硬条件。** * **A不能选**:即使便宜且预算充足,供应商明确承诺下周一到货,违反周五17:00前到货的硬要求。 * **C不能选**:时间完全满足,而且数量足够,但最低采购量导致必须买720个,实际支付7,560元,超过6500元预算。 * **B是唯一值得立即追确认的方案**:600个、实际支付5,814元,预算还剩686元;但“本周四发货”≠“本周四/周五送达”。如果能确认**最迟周五17:00前送达上海办公室**,B就同时满足数量、预算和时间要求。 所以,**今天不要直接下单B,而是立即要求B确认最终到货时间和加急方案;在18:00报价截止前拿到书面承诺。** 如果B无法承诺,现有三份报价中就不存在可直接执行的方案,需要向供应商争取修改条件,而不是自行突破预算或交期。 ### 可以发给经理的决策说明 目前三家报价中,没有一家在现有条件下同时满足“600个、周五17:00前到上海办公室、总预算6500元以内”三个硬条件。 A:600个共5940元,预算符合,但供应商明确承诺下周一到货,无法满足活动交期。 B:600个共5814元(10.20×600×95%,包邮含税),预算符合且有686元余量,但目前只承诺本周四发货,没有承诺到货时间。因此暂不直接下单,今天先要求供应商书面确认最迟周五17:00前送达上海办公室;如需加急,也要求同时确认加急费用,确保总费用不超过6500元。 C:最低30箱,每箱24个,因此必须采购720个,共7560元。虽然明确承诺本周四到货,但超过预算1060元,且无法减少数量,因此不符合预算。 建议今天优先锁定B的交期和加急费用。只有在B书面确认能够按时送达且总费用≤6500元后再下单;否则现有报价没有可直接执行的方案,需要继续向供应商协调交期/费用条件。 ### 现在最该发给B的消息 您好,我们计划采购同款帆布袋600个,今天需要确定订单。 请帮忙确认以下信息: 1. 600个按目前报价计算,含税、包邮并享受95折后,最终应付总额是否为5814元,是否还有其他必要费用? 2. “本周四发货”情况下,能否**最迟于本周五17:00前全部送达上海办公室**? 3. 请确认具体预计到货日期/时间,并说明使用哪种物流方式。 4. 如果普通物流无法保证周五17:00前到货,请告知可采用的加急方式、额外费用以及加急后能否书面保证周五17:00前送达。 5. 我们的总预算上限为6500元,请确认加急后的全部费用是否仍不超过6500元。 由于报价今天18:00截止,烦请尽快书面确认。谢谢! **执行顺序就是:现在发B确认 → 等书面回复 → 若“周五17:00前到+总价≤6500”成立,今天下单;否则不要因为报价截止而被迫选择A或C。**
Gemini · 2026-09-21 09:03–09:06 KST
我在给公司活动采购600个同款帆布袋,需要周五17:00前全部送到上海办公室,总预算6500元(含税、运费及其他必要费用)。下面是练习用的三份虚构报价,三个供应商的产品规格相同。今天是周一,报价有效到今天18:00。我还没下单,也没有权限提高预算、延后活动或减少数量。 A:9.60元/个,600个起订,运费180元,含税。供应商明确说下周一到货。 B:10.20元/个,500个及以上,货款打95折,包邮、含税。报价写的是“本周四发货”,没有承诺到货日期;加急方式和费用尚未确认。 C:每箱24个,每箱252元,30箱起订,只能整箱购买;包邮、含税,明确承诺本周四到货。不允许拆箱或降低起订量。 帮我比较应该怎么选,算清实际需要支付的总额和获得的数量,给出可以发给经理的决策说明,以及现在最该发给供应商的确认消息。不要只按单价排序,我需要今天就知道下一步怎么做。 这是一份非常典型的“在多重约束条件下(预算、工期、MOQ起订量、到货时效)寻找可行解”的采购决策。 下面为您梳理详细的对比分析、决策建议、可直接发给经理的说明摘要,以及必须在今天18:00报价失效前发给供应商的确认消息。 --- ### 一、 供应商报价及可行性对比分析 | 供应商 | 采购量与包材 | 费用计算(含税运) | 是否超预算(6500元) | 到货时间 | 方案可行性评估 | | --- | --- | --- | --- | --- | --- | | **供应商 A** | 600个 | 600 × 9.60 + 180 = **5,940 元** | **未超**(余560元) | **下周一** | ❌ **不可行**。到货时间比截止时间(周五17:00)晚了3天,严重影响活动。 | | **供应商 B** | 600个 | 600 × 10.20 × 0.95 = **5,814 元** | **未超**(余686元) | 周四发货<br> <br>(未承诺到货) | ⚠️ **待确认**。若常规模规周四发货,跨省/跨城快递很难确保周五17:00前送达。必须确认**加急顺丰/顺丰特快**费用。 | | **供应商 C** | 30箱(每箱24个)<br> <br>= **720个** | 30 × 252 = **7,560 元** | ❌ **严重超支**<br> <br>(超1060元) | **本周四** | ❌ **不可行**。虽然时间符合,但因30箱起订且不拆箱,总价7560元超出6500元总预算上限。 | --- ### 二、 核心采购决策与下一步行动 1. **核心结论**: * **供应商 A** 直接淘汰(无法按时送达)。 * **供应商 C** 无法作为直接采购对象(总预算超支1060元,且您没有权限提高预算)。 * **供应商 B 是目前唯一可能成功的突破口**:B的基准货款为 **5,814元**,距离6,500元预算尚有 **686元的剩余空间**。这686元完全足够用来支付加急快递(如顺丰特快/空运/跨城专送)的差价,以确保周四发货后、周五17:00前送到上海。 2. **当务之急(今天18:00前必须完成)**: * 立即联系 **供应商 B**,确认加急发货方案与费用; * 提早联系 **供应商 C**,尝试争取谈判空间(如降至26箱/624个,总价6,552元,若能微调价格或补贴运费则备选)。 --- ### 三、 汇报给经理的决策说明(可直接复制/转发) > **关于600个活动帆布袋采购方案的决策请示** > 经理您好,针对本次活动采购600个帆布袋(预算上限6,500元,要求周五17:00前送达上海),目前三家供应商报价分析如下: > 1. **供应商 A(淘汰)**:总费用5,940元,但明确**下周一才能到货**,无法满足活动时效。 > 2. **供应商 C(超预算淘汰)**:起订量30箱(720个),总费用**7,560元**,超出预算1,060元(到货时间为周四)。 > 3. **供应商 B(首选突破方案)**:基础货款5,814元(打折含税),目前承诺“本周四发货”。距预算上限(6,500元)仍有 **686元余量**。 > > > **建议决策**: > 优先锁定 **供应商 B**。我正在与其确认加急快递费用(用剩余的686元预算支付顺丰特快或专车配送),确保周四发货后能在周五17:00前送达上海。确认加急时效与费用无误后,将于今日18:00报价失效前完成下单。 --- ### 四、 今天必须发给供应商的确认消息(可直接复制) #### 1. 发给 供应商 B(重点跟进,需在今天18:00前确认) > **标题**:【紧急采购确认】600个帆布袋订单及加急到货咨询 > **内容**: > 您好!您的报价(600个,折后含税包邮5,814元)我们已收到。 > 我们确定要采购 **600个**,但由于活动限制,**必须在【本周五 17:00 前】送达上海市**。您报价中注明的“本周四发货”普通快递可能无法保证此配送时效。 > 请帮忙紧急确认以下两点: > 1. 如果本周四发货,改用**顺丰特快 / 跨晨达 / 专线加急配送**,能否确保在**本周五 17:00 前**送达上海? > 2. 改用上述加急配送后,需要补多少运费差价?(只要加急总费用控制在 686 元以内,我们可以今天 18:00 前立即安排下单全款支付)。 > > > 期待您的回复,非常感谢! --- #### 2. 发给 供应商 C(备选争取,看是否有谈判空间) > **标题**:【采购咨询】关于帆布袋订单起订量与预算调整 > **内容**: > 您好!您的报价(本周四到货)时效非常符合我们的需求。 > 但因为我们内部有严格的采购预算(上限 6,500 元包邮含税),且**无权追加预算**。按照您“30箱起订(720个),总价 7,560 元”的规则,已大幅超支。 > 请问贵司是否可以灵活处理: > 1. 能否按 **25箱(600个)** 订购,总价为 6,300 元包邮含税? > 2. 如果必须整箱,是否可以按 **26箱(624个)** 订购,并给予一定优惠将总价控制在 **6,500 元以内**? > > > 如果可以,我们今天 18:00 前即可完成下单付款。盼复,谢谢!
Claude · 2026-09-21 09:03–09:06 KST
我在给公司活动采购600个同款帆布袋,需要周五17:00前全部送到上海办公室,总预算6500元(含税、运费及其他必要费用)。下面是练习用的三份虚构报价,三个供应商的产品规格相同。今天是周一,报价有效到今天18:00。我还没下单,也没有权限提高预算、延后活动或减少数量。 A:9.60元/个,600个起订,运费180元,含税。供应商明确说下周一到货。 B:10.20元/个,500个及以上,货款打95折,包邮、含税。报价写的是“本周四发货”,没有承诺到货日期;加急方式和费用尚未确认。 C:每箱24个,每箱252元,30箱起订,只能整箱购买;包邮、含税,明确承诺本周四到货。不允许拆箱或降低起订量。 帮我比较应该怎么选,算清实际需要支付的总额和获得的数量,给出可以发给经理的决策说明,以及现在最该发给供应商的确认消息。不要只按单价排序,我需要今天就知道下一步怎么做。 # 结论 **目前只有B可能同时满足预算、数量和周五17:00的时限,但它还没有承诺到货日期。** 今天先向B要书面确认,同时向A发一条备选询问。若B确认不了,就需要经理决策。 ## 1. 实际支付与数量 | 项目 | A | B | C | |---|---|---|---| | 数量 | 600 | 600 | 720(30箱起订,整箱) | | 货款 | 5,760 | 6,120 × 0.95 = 5,814 | 30 × 252 = 7,560 | | 运费 | 180 | 0(包邮) | 0(包邮) | | **应付总额** | **5,940** | **5,814**(加急费另计) | **7,560** | | 与预算6,500的差额 | 剩余560 | 剩余686 | **超支1,060** | | 折合600个的实际单价 | 9.90 | 9.69 | 12.60 | | 周五17:00前到货 | ❌ 下周一到 | ❓ 周四发货,无到货承诺 | ✅ 周四到 | | 结论 | 超时,淘汰 | 唯一可能全部满足,待确认 | 超预算且多买120个,淘汰 | C的每箱24个,600个刚好25箱(6,300元),但低于30箱起订量,不允许降量,所以只能按720个、7,560元算。 ## 2. 需要确认的三件事 1. B周四发货后,周五17:00前能否送到上海办公室,要书面承诺。 2. 若不能保证,加急方式和费用是多少。加急费必须 ≤ 686元,才能让总额不超过6,500元。 3. 95折是否确实适用于600个,最终含税总价是否就是5,814元。 ## 3. 发给B的确认消息(现在发) > 您好,我们计划下单600个帆布袋(规格同报价),报价有效期到今天18:00,想今天确定。请在**今天16:00前**书面回复以下几点: > 1. 按95折计算,600个含税、含运的最终总价是否为5,814元? > 2. 周四发货的具体时间、发货地和承运方式?能否保证**本周五17:00前送达**上海办公室(地址:____)?请给出书面承诺。 > 3. 如果普通发货不能保证,加急方案和费用是多少?我们含加急费的总预算上限是6,500元,即加急费不能超过686元。 > 4. 能否提前到周三发货? > 5. 若需要延长报价有效期到明天,是否可以? > > 收到书面确认后,我们会立即下单并付款。 ## 4. 备选:同时问A(可选,建议发) > 您好,我们需要600个帆布袋,**必须在本周五17:00前送到上海**。贵司报价为下周一到货,请问是否有加急或空运方案?加急费需控制在560元以内(含运费180元后总额不超过6,500元)。请今天16:00前回复。 C不用问:它明确不允许降量或拆箱,再问也不会改变超支的事实。 ## 5. 给经理的决策说明 **标题**:600个帆布袋采购,建议锁定B,待书面确认到货 **现状**:三家报价今天18:00失效,需周五17:00前送到上海办公室,预算6,500元(含所有费用),数量600个。我没有权限调整预算、时间或数量。 **依据**: - A:5,940元,下周一到货,晚于活动时限,不可行。 - C:7,560元,超预算1,060元,且被迫多买120个,不可行。 - B:5,814元,价格最低,但只承诺周四发货,没有承诺到货日期。 **成本**:B总额5,814元,剩余686元预算可用于加急。 **预期效果**:若B今天书面承诺周五17:00前送达,且含加急费总额 ≤ 6,500元,我今天下单,预算和时限都能满足。 **需要您的回应**: - 我已要求B和A在今天16:00前书面回复。 - 若两家都无法承诺时限内到货,则没有符合全部约束的方案,需要您在18:00前决定: 1. 批准C超支1,060元,接受720个; 2. 调整活动时间,改用A或B; 3. 其他方案。 - 请您预留16:00到18:00的时间,以便快速决策。 ## 下一步 先发B的消息,再发A的消息。16:00前若B给出书面承诺,直接下单。若没有,立刻把上面的说明发给经理。