Rehearse your next negotiation against an AI that pushes back

Pick a real situation: a job offer, a contract, a funding round. Negotiate by chat with a counterpart that has its own hidden limits, then read a scored analysis of every move you made.

Start a free negotiationSee a sample analysis

10 free sessions, no card needed. A session takes 10 to 20 minutes.

Salary negotiation, senior developer

Exchange 3 of 30

Hiring manager

We can offer $95,000 for this senior role. That is competitive for the market. What are your thoughts?

You

Before I answer: how was the range for this role set? With 8 years on similar platforms, I was expecting closer to $120,000.

Hiring manager

That is above our range. Would you consider $105,000 with a signing bonus?

Every session ends with a scored analysis

The whole conversation is read against your briefing. You see where you gained ground, where you gave it away, and what to change next time.

Sample analysis

Salary negotiation, senior developer

72/100

Overall score, weighted across six skills

64%

of your objective reached: $108,000 and a review in six months, for a target of $120,000

Strategy and planning (20%)
8/10
Communication (20%)
7/10
Value creation (20%)
5/10
Emotional intelligence (15%)
8/10
Closing ability (15%)
7/10
Assertiveness (10%)
9/10

Critical mistake

At exchange 2 you dropped from $120,000 to $110,000 before they gave a single reason. That one move set the ceiling for the rest of the talk.

Replay plan

  1. 1.Ask how the range was set before giving any number.
  2. 2.Hold $118,500 for two exchanges, then trade, never concede.
  3. 3.Swap part of the gap for a review at six months.

The six skills, their weights and the eight parts of the report are described on how Negosim scores a negotiation.

The other side has a briefing too

Each scenario gives the AI its own budget, deadline and alternatives. It defends them, it can say no, and you only learn what it knew once the session is over.

Your briefing

What you read before you start

You are
A senior developer, 8 years on payment platforms
Their offer
$95,000
Your target
$120,000
Your walk-away
$104,000, your current package

Their briefing

What the AI defends

They are
Budget ceiling
Room on top
Pressure

Start with a situation you will face

Salary, sales, real estate, fundraising, partnerships, freelance rates. Each scenario has a difficulty level and runs in five languages.

All scenarios

Freelance / Beginner

Freelancer Rate Negotiation

You are Robin, a freelance UX designer with 6 years of experience.

Real estate / Intermediate

Real Estate — Apartment Purchase

You are Marion, a 34-year-old marketing director looking to buy your first apartment in Lyon, France.

Salary / Beginner

Salary Negotiation — Senior Developer

You are Alex, a senior software developer at TechNova, a mid-size SaaS company (300 employees).

Fundraising / Advanced

Startup Fundraising — Seed Round

You are Jordan, co-founder and CEO of GreenChain, a B2B SaaS startup that helps logistics companies track and reduce…

B2B sales / Intermediate

Enterprise Software Deal — Annual Contract

You are Sam, Head of Procurement at Meridian Manufacturing, a mid-size industrial company (1,200 employees).

Practising for something specific? See the pages for job seekers, sales teams, founders and procurement.

How a session works

Three steps, ten to twenty minutes.

  1. 1

    Read your briefing

    Pick a scenario. You get your role, your target and your walk-away point. The other side has a briefing too, and you will not see it.

  2. 2

    Negotiate by chat

    The AI answers in seconds, in English, French, Spanish, German or Polish, and defends its own limits. A session stops at 30 exchanges or 30 minutes.

  3. 3

    Read the analysis

    A score out of 100 across six skills, the moment that cost you the most, and a plan to replay the same scenario better.

New to the vocabulary? Start with BATNA, ZOPA and anchoring in the negotiation glossary, or read how to practise negotiation alone.

Read before you play

Short guides that answer one question each: how to practise alone, how to anchor a salary, how to hold a freelance rate.

All guides

Frequently asked questions

Plans, scoring, languages and session length. Anything else: the support page in your account.

What is Negosim?

Negosim is a web-based negotiation simulator. You choose a scenario (a salary discussion, a sales contract, a fundraising round, a real estate purchase, a freelance rate), negotiate by chat with an AI counterpart, and receive a score from 0 to 100 plus a written analysis of the session. It is built by Kern IT in Brussels.

Is Negosim free?

Yes, to start. The free plan includes 10 sessions for life with no credit card. Paid plans, verified on 13/09/2026, are Negotiator at 12 euros per month for 30 sessions and Master at 29 euros per month for 100 sessions. One session costs one credit.

How is my negotiation scored?

At the end of a session the whole transcript is analysed against the scenario briefing. You get a score from 0 to 100 and a written report covering strategy, communication, concessions and whether you reached your objectives. Scores are comparable between players on the public leaderboard.

How long does a session last?

A session is capped at 30 exchanges or 30 minutes, whichever comes first. Most sessions take 10 to 20 minutes. You can also end a session early and still get your analysis.

Which languages can I negotiate in?

The AI counterpart negotiates in English, French, Spanish, German and Polish. You pick the language when you start a scenario; the scenario briefing is translated as well.

Your next negotiation is already on the calendar. Rehearse it first.

Create an account, pick a scenario and start in under a minute. See the plans or the offer for teams.

Create a free accountBrowse the scenarios