B2B audit and consulting: your prospects don’t know why to choose you.
They don’t understand what you do, what sets you apart, or what they gain from it. Your sales cycles get longer. And the deal you think you lost was decided without you: your name never made it onto the shortlist. Fast Growth Advisors, the B2B Message-Market Fit audit and consulting firm, measures your message in 48 hours and fixes it in two days, for post-funding startups and scale-ups in France and Europe.
In brief. The Fast Growth Advisors messaging audit scores your message on 15 criteria and delivers its report 48 hours after the interviews, for €3,000 excluding tax. The repositioning that follows takes two days on average. Our Message-Market Fit Observatory has measured 369 French post-funding startups: their average clarity score, measured in 2026, is 5.33 out of 10, and none scores above 8. At Coptos, the Message-Market Fit score rose from 34 to 52 out of 75 in three months.
Fast Growth Advisors won the “Best B2B Message-Market Fit Consultancy 2026, Europe” category. In September 2026, the British magazine Acquisition International gave us the award. It recognises measurement work, the same work we apply to your message. Read the press release →
01The problem
Can you explain who you are in 30 seconds?
01
What you do
The CEO, in a board meetingThe orchestration platform for data-driven teams
02
What sets you apart
The sales rep, in a meetingActually, it is a bit like Zapier, but for…
03
What they gain
The website, on the homepageAutomate your business workflows
We signed with the other one. It was clearer.
Your product is almost never the problem. It is the message carrying it. And a message can be fixed.
Four sentences. Thirty seconds. If your CEO, your VP Sales and your CMO tell three different stories, your pipeline is already paying for it: longer cycles, prospects who need to “think about it”, weaker competitors who close because they are clearer.
The shortest test fits in one line. Swap your name for a competitor’s in your headline: if the sentence still holds, it does not explain why you rather than someone else. Fast Growth Advisors measures exactly that gap, criterion by criterion.
Our point of view
Here is what we answer, in 30 seconds.
- Who we are
Fast Growth Advisors, the Message-Market Fit firm for European B2B startups and scale-ups.
- What we do
We measure your Message-Market Fit, rebuild your message with your teams, and keep it sharp over time.
- What sets us apart
A messaging methodology industrialised by our own AI software. We build our tools, we do not just consult.
- The value
A message your buyers and the AI engines grasp in ten seconds: shorter sales cycles, a pitch your whole team repeats word for word by week two, an offer ChatGPT and Perplexity know how to cite.
02The 2026 Observatory
What does the Message-Market Fit Observatory 2026 reveal?
Fast Growth Advisors measured 369 French post-funding startups with its own analysis technology, and 83 of them were audited in detail on the 15 criteria. Here is what these measurements say about the clarity of their message, and why the amount raised changes nothing.
average message clarity score of French post-funding startups, measured in 2026
of the 83 detailed audits below the critical clarity threshold (37.5 out of 75)
average level of AI visibility readiness (GEO, Generative Engine Optimization)
Across the 83 detailed audits, three in four remain below the critical threshold. Your prospects will never tell you. They will look elsewhere.
What Message-Market Fit measures, and how: the definition and the measurement method.
Across the 129 startups in 8 sectors, it is Software (5.90) and FinTech (5.81) that score highest on clarity, while Biotech (4.58) and DeepTech (4.54) sit at the bottom of the ranking. Yet Biotech raises €18.5M on average and FinTech €17.3M: at comparable amounts, the clarity gap is massive, and the money raised does not make the message any clearer. Source: Fast Growth Advisors Observatory, Q2 2026. Explore the Observatory
03Our offer
B2B audit and consulting: how do we work together?
With Fast Growth Advisors, a free diagnostic gives the first signal, an audit the full measurement, an engagement the fix.
The Messaging Audit
The messaging audit costs €3,000 excluding tax. We score your message on 15 criteria and 5 layers of AI visibility, based on interviews with your leadership team, and the report is delivered 48 hours after the interviews.
Message-Market Fit consulting
A complete repositioning of your message in 2 days on average, then deployment everywhere it plays out: website, sales deck, content, acquisition. The engagement starts at €3,000 excluding VAT with the audit, then is priced by the scope you choose.
Do you invest in B2B startups? The Message-Market Fit of your portfolio companies is a measurable asset, and it is almost always overestimated. The investor offer
04Client case study
Client case study: Coptos, a positioning found in one day
Coptos, professional reprographics in the Paris region: positioning found in one day with Fast Growth Advisors, message and website rewritten in two weeks.
Welcome to Coptos. Printing technologies at your service.
Swap Coptos for any competitor’s name: the sentence still holds.
Technology for your deadlines. Craftsmanship for your impact.
Print Compliance for sensitive documents, Reprography as a Service for recurring volumes, 30 years of expertise near Paris.
Measured on our 75-point grid, the Coptos website went from 34/75 in June 2026 to 52/75 in September 2026, up 53%, after our audit and the implementation of our recommendations. The largest gain is in GEO readiness, how ready the site is for AI engines, from 1/5 to 5/5. The value proposition follows, from 2/5 to 5/5.
| Criterion | June 2026 (before) | September 2026 (after) |
|---|---|---|
| Overall score | 34/75 | 52/75 |
| Positioning clarity | 3/5 | 4/5 |
| Value proposition and user benefits | 2/5 | 5/5 |
| Technical SEO | 4/5 | 5/5 |
| GEO readiness | 1/5 | 5/5 |
Same grid on both dates. 4 of the 15 criteria shown here: they account for 9 of the 18 points gained. Measurement margin: ±1 point out of 75.
“In one day, we could finally say why Coptos and not someone else. Two weeks later, the whole website said it. Reprographics is not tech: if the message problem exists in our industry, it exists everywhere.”
Denis Altuna, President, Coptos · Professional reprographics, Paris region
05The value
What changes when your market understands you?
A clear message is a message the market repeats without you. Fast Growth Advisors measures the gap in five places.
| Who sees it | Vague message | Clear message |
|---|---|---|
| VP Sales, your sales cycles | The prospect hesitates, shops around, postpones. | They understand and they buy: shorter cycles, more deals won. |
| CMO, your campaigns | Every euro amplifies the vagueness, costs climb. | Every euro carries the same message: more qualified leads, a lower cost per lead. |
| CEO, your teams | Three versions of the pitch, a pipeline that pays for it. | One story from CEO to sales rep: fewer deals lost, a reliable forecast. |
| Analysts and press | No shortlist, no citation, no coverage. | Quotable, therefore quoted: press coverage, inclusion in analyst research. |
| Your investors | Doubt sets in at the worst moment. | The thesis lands in one sentence: due diligence shortens, the round closes. |
Read also: how message clarity opens doors with analysts.
06AI visibility
Google AI Overviews already writes the answer. Does it cite you?
asked to Google on September 1, 2026 about our market, each one followed by a written answer
answers that cite fast-growth.fr
We measure the same thing for you, question by question, with the link that lets you check it yourself. The measurement costs a few cents. Fixing the message behind it is what costs.
This is what the market calls GEO (Generative Engine Optimization) or AEO (Answer Engine Optimization): SEO extended to answer engines. A growing share of B2B buying journeys starts with a question asked to ChatGPT, Perplexity or Gemini, and the answer cites two or three names. Fast Growth Advisors measures whether yours is one of them, then fixes what stops AI engines from understanding you.
07Who we work with
Who do we work with?
Three roles see the gap first. Fast Growth Advisors works with them.
Post-funding CEO
A defensible story
You convinced investors. Your market is still hesitating.
VP Sales
One pitch
Every rep tells their own version. Deals go to weaker but clearer competitors.
CMO
One message on every channel
Your website says one thing, your decks another, and the AI engines retain none of it. You want a message that holds across every channel, in front of a buyer as in front of ChatGPT, without a rewrite for every campaign.
08They trusted us
What our clients say
In 1 day, Fast Growth Advisors rebuilt Coptos’ positioning, against 2 days on average. Its audit score rose from 34 to 52/75 between June and September 2026.
In Les Échos on July 20, 2026, Thomas Pontiroli’s article AI-written LinkedIn posts and press releases: a false good idea for startups?
(in French, for subscribers) draws on data from the Message-Market Fit Observatory. See our press coverage
Strategies are like opinions. It seems everyone has one. However, successful strategies require taking a risk and defining clear paths to execution. Working with Herve over a couple of decades has demonstrated his ability to improve most tech strategies and more importantly make them executable.Paul, CEO, Global Marketing Agency, UK
Philippe demonstrated enormous resourcefulness and creativity, imagining new and innovative approaches to business development.Carl, Chief Commercial Officer, Global Telco
Over the years, a number of companies have put their trust in us, and among them you will find Edenred, Alphabet, Groupe Télégramme, Atakama Technologies, BICS, Coptos, Lengow, ABVV Groupe, Lifen, Sense4data, Upsun, UNJPT, Prestige Racing, HACS Restauration and La Voie Agile. Four of these, BICS, Lengow, Lifen and Upsun, were assignments that we carried out with Starsight.
Our software
Why does a consulting firm build its own software?
Because our method does not fit in slides. Our audits run on our own AI technology, the one that analysed 369 startups for the Observatory.
Fast Growth Advisors also publishes NOMO IA for content production, Plein Phare Digital and QRCodeBTP. Discover our technology
Blog
Latest posts
Analyses by Fast Growth Advisors on B2B messaging and AI visibility.
Why B2B SaaS homepages all sound the same
B2B SaaS homepages sound alike because nobody decided what to say. Data from 369 startups, and a one-sentence test to see if your page…
AI engines rewrite your query: they don’t search for your question
An AI engine doesn’t search the buyer’s question. It rewrites it, often into English, sometimes doesn’t search at all. What the logs show.
AI Overviews: 23.1% Fewer Clicks in France, and a Blind Spot No One Measures
Google’s AI Overviews are cutting B2B clicks in France (−23.1%). Why the click is no longer the unit, and how to become the source…
Frequently asked questions
How do you know you have reached Message-Market Fit?
When your message is understood, remembered and bought by your market, just as product-market fit measures how well your product fits. It is measured across 15 criteria, from positioning clarity to visibility in AI-generated answers. In the 2026 Message-Market Fit Observatory, the average score across 369 French post-funding startups is 5.33 out of 10.
What is the difference between the free diagnostic and the audit?
A free diagnostic gives you a first signal on your message clarity in minutes. The audit goes deep: 15 criteria, 5 layers of AI visibility, leadership interviews, a full report and action plan delivered within 48 hours, for €3,000 excluding tax. No conversation is needed for the first; the second starts with a scoping interview.
How long does it take to reposition a message?
2 days on average for the positioning and message rebuild. At Fast Growth Advisors, measurement comes first: the audit scores 15 criteria, includes leadership interviews and delivers its report 48 hours after them. Then comes the rebuild, then deployment, driven by your teams with our guidance: website, sales deck, content, campaigns. You get usable deliverables from week two, ready for your teams to roll out. For Coptos, a single day of work was enough. One week is the ceiling.
Do you only work with startups?
No. Fast Growth Advisors works with B2B startups and scale-ups, from pre-Series A to established scale-ups, as well as investor networks that want to measure and strengthen the message of their portfolio companies. The approach assumes a working product and first customers: product-market fit is already there.
Why does my message need to convince AI engines too?
Because a growing share of B2B buying journeys starts with a question asked to ChatGPT, Perplexity or Gemini. If AI engines do not understand what you do, they do not cite you. Your message must be clear for a human and extractable for a machine.