Who or what scores my negotiation?

A Google Gemini language model reads the complete transcript of the session together with both briefings, yours and the counterpart's, and writes the report with fixed instructions: it rates the player only, on six named skills with fixed weights. No human reviews individual sessions.

Is the score from 0 to 100 an average of the six skills?

It is a weighted average. Strategy and planning, communication and value creation count for 20 percent each, emotional intelligence and closing ability for 15 percent each, assertiveness for 10 percent. Each skill is rated from 0 to 10, and the weighted result is expressed out of 100.

Does reaching a deal give a high score?

Not on its own. The objective achievement rate measures how close the outcome came to your briefing's goal, and it is reported separately from the 0-100 score. A player who refuses a bad deal with a clear explanation can score higher than one who signs below their limit.

Can two players compare their scores?

Within the same scenario, yes: both face the same briefings and the analysis uses the same criteria. Across scenarios less so, because difficulty differs, which is why the public leaderboard shows the scenario next to every score.

What are the limits of the score?

It judges a written conversation against one briefing. It does not hear tone of voice, it cannot know your real-life alternatives, and as with any language model the assessment of a given session can vary. Treat it as a coach's reading of the transcript, not as an exam grade.

Negosim method

How Negosim scores a negotiation

Published 8 October 2026 · 4 min read

Short answer: after each session, Negosim's AI reads the full transcript against your briefing and the counterpart's hidden briefing. It rates you, and only you, on six skills with fixed weights, combines them into a score from 0 to 100, measures separately how much of your objective you reached, and writes a report that names your critical mistake and gives you a plan to replay the same scenario.

This page describes the method exactly as the product applies it, so that players, trainers and anyone comparing negotiation simulators can see what the number means.

What the analysis reads

Three inputs, nothing else:

Your briefing: your role, your objective and the facts you were given
The counterpart's briefing: its role, its limits and its alternatives, which you did not see during the session
The complete transcript: every message from both sides, with the number of exchanges used (a session stops at 30 exchanges or 30 minutes)

Reading both briefings is what makes the analysis useful. It can tell you that the counterpart had room up to a given amount, and that you stopped asking before you found it.

The six skills and their weights

Skill	Weight	What is assessed
Strategy and planning	20%	Whether you had a clear strategy, and whether you adapted it
Communication	20%	Clarity, persuasiveness, active listening
Value creation	20%	Finding solutions that work for both sides, expanding what is on the table
Emotional intelligence	15%	Reading the counterpart, managing tension
Closing ability	15%	Moving toward agreement, handling the final objections
Assertiveness	10%	Standing firm on key points without being aggressive

Each skill is rated from 0 to 10. The overall score is their weighted average, expressed out of 100. A player rated 8, 7, 5, 8, 7 and 9 on the six skills in that order scores 71.5, shown as 72/100.

Objective achievement: a second, separate number

The score measures how you negotiated. The objective achievement rate, from 0 to 100 percent, measures how close the outcome came to the goal in your briefing: the salary, the price, the terms you were asked to obtain. Keeping the two apart matters. You can negotiate well against a counterpart whose limits made your target impossible, and you can reach your target by luck after a weak negotiation.

The eight parts of the report

Executive summary: the outcome and your overall approach in a few sentences
Objective achievement: the goal, what was agreed, the percentage, and what was left on the table
Performance breakdown: the six skills, each with a rating and a reason, and the overall score
Key moments: two or three of your messages, quoted, rated as well played, missed opportunity or costly mistake
Negotiation style: your dominant style (competitive, collaborative, compromising, accommodating or avoiding), strengths and blind spots
Critical mistake: the single most costly move, what to do instead and its likely impact
Coaching: three or four recommendations tied to this session
Replay strategy: how to open, which pressure points to use, which traps to avoid and how to close if you play the scenario again

The report is written in the language you played in: English, French, Spanish, German or Polish.

Rules the analysis follows

The counterpart is never rated. Its moves are only used to judge your reactions
Quotes, not impressions. Key moments cite your exact words, so you can check the reasoning
Limits beat deals. Conceding past your reservation price costs points; refusing a bad deal with a clear explanation does not
Same criteria for everyone. Two players on the same scenario are judged on the same skills with the same weights

What the score is not

It is not a certification and not a prediction of how a real negotiation will go. It judges a written exchange, so tone of voice and body language are out of scope. And like any assessment produced by a language model, two readings of a similar session can differ by a few points. The most reliable signal is the trend over several sessions of the same scenario, and the critical mistake that keeps coming back.

Why Negosim works this way

Negotiation skills improve through repetition and honest review, which is why the report ends with a replay plan rather than a grade alone. The six skills cover both sides of negotiation theory: claiming value with anchors and concessions, and creating value through integrative negotiation. A free account includes ten sessions: pick one of the scenarios, play it, read your report, then play it again with the replay plan.