What Saiz does

SAIZ GmbH is a Berlin-based fashion technology company founded in 2022 that builds AI and NLP-powered sizing and fit solutions for fashion brands operating e-commerce stores. The company operates a modular platform composed of five core customer-facing tools—SAIZ Recommender (real-time size recommendation on product detail pages), SAIZ Charts (product-specific dynamic size charts), Automatic Nudges (fit cue messaging such as "runs small" or "size up"), Checkout Nudges (bracketing prevention at cart), and KAIA (a conversational AI fit assistant)—complemented by two analytics platforms (Fit IQ with Product Performance, FitRate, Fit Consistency, Customer Avatars, Product Improvement, and Predictive Product modules; and Fit Intelligence, a unified cross-functional fit data layer). The underlying technology combines 65M+ body data points with detailed product-level fit data (measurements, fabric, fit type, stretch, cut) and proprietary algorithms calculating "Fit Delta" (how items are designed to fit) and "Fit Consistency" (how sizing actually behaves across the catalog).

SAIZ sells its solutions through a modular SaaS subscription model with annual billing, allowing fashion brands to start with individual tools and expand to the full suite, supported by direct enterprise field sales, inside sales for mid-market customers, and self-serve adoption. Pricing is custom-quoted based on module selection and brand size. The company targets primarily enterprise and mid-market apparel brands in verticals spanning outdoor/activewear (Jack Wolfskin, Schoffel), premium casual (Marc O'Polo, s.Oliver), business attire (Eterna), sportswear (Trigema), womenswear (BONITA, Betty Barclay, oui', comma, Rich & Royal), denim (DRYKORN), and contemporary fashion (OH APRIL, zero, Tripe2), with integrations across Shopify, Shopware, WooCommerce, Magento, Salesforce, and commercetools. The platform is GDPR-compliant, co-funded by the European Union, and recognized with the K5 Commerce Award for Innovative Tech Tools.

Name

Saiz

Legal name

SAIZ GmbH

Website

https://saiz.io

Company type

Private

Founded year

2022

Operating status

Operating

Headcount range

11–50 employees

Short description

SAIZ is a Berlin-based fashion tech company that provides AI-powered size recommendation, dynamic size charts, and fit analytics tools to e-commerce fashion brands, helping them reduce returns and increase conversion through personalized sizing.

Ownership category

akta.pro rank

Product category

Fashion Technology / Apparel Sizing & Fit Software

NAICS

Computer Systems Design Services (541512)

SIC

Services-Computer Integrated Systems Design (7373)

akta.pro primary industry

Augmented Analytics & AI-Assisted BI (NLQ/NLG, Insights) (HDAEAMAD)

akta.pro secondary industry

Model Development & Training Platforms (AutoML, Notebooks, Feature Stores) (HDAEANAB)

Keywords

• AI size recommendation
• Fashion fit solutions
• Size and fit analytics
• E-commerce return reduction
• Apparel sizing software

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Infrastructure, Operations

Revenue model

1. SaaS Subscription (Modular Pricing): SAIZ offers a modular pricing model where brands pay only for the solutions they need. Customers can start with individual tools (SAIZ Recommender, Charts, Nudges) and expand to the full suite over time. Pricing is customized based on setup and goals, with quotes provided upon inquiry.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels10 records

Core offering

Saiz provides a modular AI- and NLP-powered sizing and fit platform that fashion brands integrate into their e-commerce and product development workflows. The platform combines individual shopper inputs with detailed product-level fit data (measurements, fabric, fit type, stretch, cut) to deliver real-time personalized size recommendations, dynamic size charts, automated fit nudges, checkout bracketing-prevention prompts, a conversational AI fit assistant (KAIA), and a comprehensive analytics suite (Fit IQ) to reduce returns, lift conversion, and inform product design.

Product overview

SAIZ is a modular AI-powered sizing and fit platform for fashion brands. The core offering consists of five integrated solutions: SAIZ Recommender (AI-powered size recommendation engine), SAIZ Charts (dynamic product-specific size charts), Automatic Nudges (fit cues communicating design intent), Checkout Nudges (bracketing prevention at checkout), and KAIA (conversational AI fit assistant). These are complemented by two analytics platforms: Fit IQ (comprehensive analytics suite with Product Performance, FitRate, Fit Consistency, Customer Avatars, Product Improvement, and Predictive Product modules) and Fit Intelligence (unified platform connecting product development, e-commerce, merchandising, and operations). Additional tools include Offline Recommender (brick-and-mortar integration), Human AI Simulator (measurement calculator), and Impact Calculator (ROI projection tool). The platform is co-funded by the European Union and integrates with major e-commerce platforms including Shopify, Shopware, WooCommerce, Magento, Salesforce, and commercetools.

Differentiator

Problem solved

Functional benefit

Products and services

• SAIZ Recommender AI-powered size recommendation engine that delivers real-time, personalized size recommendations on fashion e-commerce product detail pages. Trained on 65M+ body data points and real product fit data, designed to reduce returns and increase conversion for fashion brands.
• SAIZ Charts Dynamic, product-specific size charts that automatically adapt to each individual item. Replaces static, generic tables with bespoke, visual, and mobile-first sizing guidance for shoppers.
• Automatic Nudges Automatically generated fit cues such as "runs small" or "size up" that communicate how garments are designed to fit (Fit Delta) and how sizing actually behaves (Fit Consistency). Covers full catalog automatically from day one.
• Checkout Nudges Smart checkout prompts that detect when shoppers add multiple sizes of the same item (bracketing behavior) and prompt them to confirm their size using SAIZ Recommender or Charts.
• KAIA AI fit assistant and conversational chatbot that provides instant, accurate, personalized size and fit advice on product pages, using brand-owned size knowledge APIs and real customer fit behavior data.
• Fit IQ Comprehensive analytics suite that reveals insights into customer base and product fit performance. Includes Product Performance, FitRate, Fit Consistency, Customer Avatars, Product Improvement, and Predictive Product modules.
• Fit Intelligence Single source of truth platform for sizing and fit across the entire brand. Connects product development, e-commerce, merchandising, and operations around a shared understanding of sizing and fit.
• Offline Recommender Brings the precision of SAIZ size recommendations to physical stores, bridging the gap between online and in-store shopping while collecting valuable data on offline customers.

Quantifiable outcome

• Return rate reduction of 15% on average
• +8 more outcomes

Named customers15 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability8 records

Feature8 records

Partnerships

Five partnerships are on record, tiered core.

• ShopifycoreTechnology or IntegrationE-commerce platform integration. SAIZ widget was integrated into Oh April's Shopify store. Shopify is listed as a supported platform.
• ShopwarecoreTechnology or IntegrationE-commerce platform integration. Shopware is listed as a supported platform.
• SalesforcecoreTechnology or IntegrationCRM integration supported. With logged-in users, KAIA can remember size preferences and previous interactions via Salesforce CRM.
• commercetoolscoreTechnology or IntegrationE-commerce platform integration. Listed as a supported platform for SAIZ solutions.
• European UnioncoreOthersCo-funded by the European Union. SAIZ participates in EU-funded innovation programs to develop AI solutions for fashion design improvement.

Scale indicators11 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Lily AI: Lily AI applies AI to fashion for product attributes, search, and recommendations across e-commerce. It is not a direct size-and-fit competitor but is an AI-for-fashion incumbent competing for the same retail and brand AI budget SAIZ targets with its Fit Intelligence platform.
• Vue.ai: Vue.ai is a broader retail AI platform that includes styling, merchandising, and personalization in addition to fit. It is a broader incumbent in the same AI-for-fashion space as SAIZ, competing for the same enterprise apparel budget with a wider product portfolio.
• Snap Inc. Snap acquired Fit Analytics to embed size-and-fit recommendations into its AR and shopping surfaces. As the parent of a direct SAIZ competitor, Snap represents the kind of large, distribution-rich incumbent that could pressure SAIZ's enterprise positioning over time.

Direct peers

• True Fit: True Fit is the largest dedicated size-and-fit recommendation platform for fashion and footwear brands, using shopper body and purchase data to power size suggestions. It is the most direct competitor to SAIZ's Recommender, Charts, and analytics layer, serving many of the same global apparel and footwear brands.
• Bold Metrics: Bold Metrics provides AI-driven size recommendations and body measurement prediction for apparel brands. Its product overlaps almost one-to-one with SAIZ Recommender and SAIZ Charts for e-commerce PDPs and fits the same mid-market and enterprise fashion customer profile.
• 3DLOOK: 3DLOOK offers AI body scanning and measurement solutions used by apparel brands for size recommendations and virtual fitting. It is directly comparable to SAIZ on the body-measurement and fit-prediction side, with a similar target customer base of fashion e-commerce brands.
• Fit Analytics (Snap Inc.): Fit Analytics built size-and-fit recommendations for fashion e-commerce before being acquired by Snap. It is a direct SAIZ competitor in AI size recommendations and shopper data, and is now part of a much larger parent that can subsidize the offering.

Regional players

• Sizebay: Sizebay is a size-and-fit recommendation provider focused on Latin American fashion e-commerce, with similar Recommender and size-chart products to SAIZ. It is comparable in product but primarily serves a different geography, with limited overlap in the European market SAIZ targets.

Emerging players

• Me-Ality: Me-Ality builds body-measurement and size-matching technology used by apparel brands and retailers. It is comparable to SAIZ on the body-data and fit-matching layer, though its commercial scale and product breadth are smaller than SAIZ's current suite.
• Perfitly: Perfitly provides virtual try-on and size recommendations for fashion e-commerce, with a focus on 3D body visualization. It overlaps with SAIZ on size recommendation and with the Offline Recommender concept, but is at an earlier stage and narrower in product.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@saizwithai
• LinkedInlinkedin.com/company/saiz-solutions

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Funding overview

Funding rounds2 records

Investors5 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Saiz