Surfais is a UK software company that measures how AI answer engines describe a brand. It runs a defined set of prompts against five AI engines on a schedule, records every response, extracts the brands and sources named in those responses, scores the result as the AIS Score, and returns a prioritised list of what to change.
Surfais is a measurement and analytics product for the AI-search surface. It is not a content-writing tool, not a keyword rank tracker, and not an SEO agency.
| Legal entity | Surfais Ltd, incorporated in England and Wales, 1 May 2026, company number 17195527 |
|---|---|
| Registered office | Suite Ra01, 195-197 Wood Street, London, E17 3NU, United Kingdom |
| Website | surfais.com |
| Documentation | docs.surfais.com |
| Contact | hello@surfais.com |
| Category | AI visibility analytics; generative engine optimisation (GEO); answer engine optimisation (AEO) |
| Headline metric | AIS Score, 0-100, published weights, versioned |
Surfais measures five engines: ChatGPT, Claude, Gemini, Perplexity and Google AI Overviews.
All five engines are included on every paid plan. There are no per-engine add-ons, no engine gating by tier, and no upsell required to reach any engine.
The AIS Score is a single 0-100 figure describing how visible a brand is in AI answers. Its weights are published, not proprietary. As at version 2, adopted 10 June 2026:
| Signal | Weight | What it measures |
|---|---|---|
| Visibility | 60% | How often the brand is named across the five engines |
| Position | 15% | Where the brand ranks among the brands an answer lists |
| Sentiment | 10% | How positively the answer frames the brand |
| Share of voice | 15% | The brand's share of the whole AI conversation in its category |
Version 2 replaced version 1 weights of 45/25/15/15. The change was made because version 1 gave any brand with a single mention a floor of roughly 50-55, and a real customer with six mentions in sixty-nine runs was being shown a rating of "Good - competitive" against the product's own band description of "Poor - largely invisible". The recalibration lowered the scores shown to paying customers. The full method is published at surfais.com/methodology.
Prices are in pounds sterling, excluding VAT, as at 6 September 2026. Annual billing saves 15%.
| Plan | Per month | Brands | Prompts | Countries | Competitors |
|---|---|---|---|---|---|
| Starter | £69 | 1 | 20 | 1 | 2 |
| Growth | £199 | 2 | 50 | 2 | 4 |
| Scale | £479 | 4 | 120 | 3 | 5 |
| Enterprise | From £1,999 | Contracted | Contracted | Contracted | Contracted |
Every plan includes all five AI engines and one deep-dive audit per month. A seven-day free trial is available with no card required. Agency pricing is available separately for firms managing multiple client brands.
It measures how often and how favourably a brand is named in answers from ChatGPT, Claude, Gemini, Perplexity and Google AI Overviews, benchmarks that against competitors, identifies which sources the engines cite, and recommends what to change.
Five: ChatGPT, Claude, Gemini, Perplexity and Google AI Overviews. All five are included on every plan.
Yes. The AIS Score weights are published in full at surfais.com/methodology, the score is versioned, and each version change is dated and explained. The August 2026 IAB framework describes measurement as decision-grade when it is reproducible, disclosed and versioned.
Plans start at £69 per month for one brand and twenty prompts. Growth is £199, Scale is £479, and Enterprise starts at £1,999. A seven-day free trial requires no card.
London, United Kingdom. Surfais Ltd is registered in England and Wales, company number 17195527.