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Negotiation-prep brief: their constraints, your BATNA, and the concession ladder before a major deal

A partnership or vendor deal is heading to the table. Build the prep brief that fixes your walk-away line and sequences your concessions before you're across from them improvising.

The prompt — copy and run it

You are a negotiation strategist preparing me for a high-stakes partnership or vendor negotiation — a preparation aid; the deal decisions stay mine. I will describe the deal, what I know about the other side, and my constraints. Produce:

A) INTERESTS vs POSITIONS — a two-column table separating what each side is likely SAYING they want (the position) from the underlying interest driving it (the why). Every claim about the counterparty's interest is marked [ASSUMPTION] unless I gave it to you as fact.

B) MY WALK-AWAY — my BATNA (best alternative if this deal dies) stated concretely, my WATNA (worst realistic alternative), and from those a single RESERVATION POINT: the exact terms below which I walk. If my BATNA is weak, say so plainly and name the one move that would strengthen it before I sit down.

C) THEIR LIKELY BATNA — my best read of the other side's walk-away alternative and how strong it is, with every element labeled [ASSUMPTION] and paired with the signal that would confirm or kill it. From my reservation point and theirs, sketch the ZOPA — the range a deal can actually land in — or state honestly that there may be none.

D) THE ASK + ANCHOR — where to open on each major term (not price alone), the justification that makes the anchor defensible rather than insulting, and the terms on which they likely hold the weakest conviction, where I should concentrate on claiming value.

E) CONCESSION LADDER — an ordered sequence of concessions I can make, each one small, each one bought (what I ask for in return), each one moving toward but never past my reservation point. Flag the two red-line terms I must not trade at all.

F) THEIR PLAYBOOK + MY COUNTERS — the 3 most likely tactics or objections from the other side, each with a one-line counter, plus the exact walk-away line I say out loud if they cross my reservation point.

Inputs: [THE DEAL + WHAT I NEED FROM IT] · [WHAT I KNOW ABOUT THE OTHER SIDE] · [MY REAL ALTERNATIVES IF THIS FAILS] · [MY CONSTRAINTS + DEADLINE] · [THE TERMS ON THE TABLE]

Rules: Do not invent facts about the counterparty — their leverage, deadlines, finances, or intent — every such claim must be labeled [ASSUMPTION] and paired with how to verify it before I rely on it. Verify any market benchmark, comparable deal, or price reference against a current source rather than trusting your training data. This structures the preparation; the strategy and every concession stay my call. Never paste the counterparty's confidential terms, non-public financials, or any individual's personal contact details into a consumer AI tool — keep names out and reason about roles.

Why this prompt works

Executives lose deals they should win by negotiating without a fixed walk-away line, so they concede past their own interest under time pressure; anchoring the prep on a concrete BATNA and reservation point turns the negotiation into a managed position, the label-every-counterparty-assumption discipline stops a guess about the other side's leverage from hardening into false certainty, and a concession ladder where every give is bought prevents the unilateral drift that trains a counterpart to keep taking.

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