What's the main difference between TrustData and SegmentStream?

SegmentStream is a headless measurement engine: it runs attribution and MMM in the background and exports results to your BI tool (Looker, Power BI, Tableau). You bring the dashboard. TrustData is a full platform: the same measurement engine plus an interactive dashboard, AI visibility monitoring across 7 engines, Lumen anomaly triage, and ad-platform connectors out of the box. For teams with a dedicated BI infrastructure and analysts, SegmentStream's headless model is flexible. For teams that want measurement without rebuilding the UI layer, TrustData ships it ready to use.

Does SegmentStream have AI visibility monitoring?

No. SegmentStream focuses on marketing measurement: attribution, conversion modeling, and MMM. It does not monitor how your brand appears in AI-generated answers from ChatGPT, Gemini, Perplexity, Claude, or other engines. TrustData includes AI visibility in every plan with daily probes across 7 AI engines, Brand Visibility Index, and GEO page audits.

How does TrustData's attribution methodology compare?

Both platforms run data-driven attribution on deduplicated first-party data. TrustData uses DDA across 6 models, cross-referenced against your Shopify or CRM data as ground truth. SegmentStream's attribution is tuned for MMM-style measurement with predicted conversions for anonymous sessions. TrustData also runs geo holdouts and time holdouts for incrementality, with calibration feeding the budget optimizer. The outputs are comparable; TrustData additionally ships the visualization and the budget recommendations with a before/after verdict.

Do I need a BI tool to use TrustData?

No. TrustData ships with an interactive dashboard covering all three levels: observability (Lumen, tracking health), measurement (attribution, AI visibility, incrementality), and decision (budget optimizer, weekly reports). You can also export raw events and attribution results to Google Cloud Storage, Amazon S3, or connect directly to BigQuery and Looker if you prefer to run your own BI. TrustData is usable without BI and interoperates with BI when needed.

How does the pricing compare?

SegmentStream is typically quoted for mid-market and enterprise, starting around USD 1,500–2,500 per month and scaling based on event volume and features. TrustData starts at EUR 49/month (Track) and the Measure tier with full attribution is EUR 149/month. Total cost of ownership is lower with TrustData because the dashboard, Lumen, and AI visibility are included — with SegmentStream you pay for the measurement engine plus the BI tool plus the analytics team to wire them together.

Is TrustData GDPR compliant?

Yes. TrustData uses dual tracking logic: anonymous server-side without consent, full first-party with consent. All data is EU-hosted. SegmentStream is available with EU hosting depending on the tier and contract, but defaults to a broader hosting model. For EU-native brands or agencies, TrustData's EU-by-default posture simplifies DPA and data-residency conversations.

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AttributionCornerstone· Published Apr 16, 2026

TrustData vs SegmentStream: Full Comparison (2026)

SegmentStream is a headless measurement engine. TrustData is a full platform with dashboard, Lumen, and AI visibility in every tier. Here's an objective feature-by-feature breakdown.

By Martin Préjean·Founder

TrustData vs SegmentStream: Headless Engine vs Full Platform

SegmentStream is a headless marketing measurement engine. It runs attribution and conversion modeling server-side and delivers results to your BI tool (Looker Studio, Power BI, Tableau). You own the visualization layer, SegmentStream owns the math.

TrustData is an independent marketing analytics platform with the same measurement engine at its core, plus an interactive dashboard, Lumen anomaly triage, AI visibility monitoring across 7 engines, and ad-platform connectors. You don't need a separate BI stack to use it.

Both tools address the same core pain: platform-reported ROAS is inflated and you need independent measurement. They differ on delivery model, scope, and price.

Feature-by-Feature Comparison

Feature	TrustData	SegmentStream
Delivery model	Full platform with dashboard	Headless engine, requires external BI
Traffic capture rate	92–98% (first-party server-side)	90–98% (first-party, conversion modeling for anonymous)
Multi-touch attribution	DDA + 5 classic models	DDA with MMM-style conversion modeling
Conversion deduplication	Against Shopify/CRM ground truth	Against modeled conversions
Incrementality testing	Geo holdouts, time holdouts, platform lift	Lift measurement via model
AI visibility monitoring	7 engines in every tier	None
Brand Visibility Index	0–100 daily score	None
GEO page audits	Automated content scoring	None
Interactive dashboard	Yes, included	No, bring your own BI
Anomaly triage agent	Lumen: 3-layer investigation with verdict	Alerts in BI only
Budget optimizer	Hill function response curves + verdicts	Model outputs, not operationalized
Ad platform connectors	Google, Meta, TikTok, Shopify, WooCommerce	Google, Meta, TikTok
Data exports	GCS, S3, BigQuery, Looker direct	BigQuery, Looker
Data hosting	EU-hosted by default	US / EU on request
Pricing (entry)	From EUR 49/month	From ~USD 1,500/month
Total cost (measurement + viz)	Included in the price	Engine + BI + analyst time

Where SegmentStream Wins

SegmentStream has a clear niche: teams with established BI infrastructure who want the measurement engine without the dashboard.

BI-first flexibility: If you already run Looker, Power BI, or Tableau dashboards and have analysts who build them, SegmentStream plugs in as a measurement backend without forcing a second visualization layer.
Modeled conversion approach: Strong conversion modeling for anonymous sessions, which helps in markets with high consent refusal.
MMM lineage: The methodology has MMM roots that some enterprise analytics teams prefer over session-stitched MTA.
Enterprise tooling: Deeper customization and enterprise-grade data contracts on upper tiers.

For a brand with a BI team, existing Looker/Power BI licenses, and no need for a turnkey dashboard or AI visibility, SegmentStream is a sound measurement backend.

Where TrustData Wins

TrustData is built for the far more common case: teams that want independent measurement without building the UI and operations around it.

Turnkey, not headless: Dashboard, connectors, alerts, and reports are included. Time-to-first-insight is days, not weeks of BI wiring.
AI visibility included: Monitoring across 7 AI engines is part of every tier. For brands whose next growth channel is AI-generated answers, SegmentStream's silence on AI visibility is a growing blind spot.
Lumen observability: Tracking and connector health, plus a 30–60 minute investigation agent when something breaks. SegmentStream surfaces anomalies in your BI; Lumen diagnoses them.
Budget optimizer, not just measurement: Response curves, marginal ROAS equalization, and 14-day before/after verdicts on reallocations. Measurement is a means; decisions are the end.
EU by default: Hosted in the European Union with GDPR-first consent tooling.
Total cost of ownership: TrustData's Measure tier at EUR 149/month is ~10x cheaper than a SegmentStream + Looker + analyst-time equivalent setup.

The Real Question: Measurement Engine or Marketing Decisions?

SegmentStream answers "is my attribution model correct?". TrustData answers that, and also "what should I do about it this week?". For teams with a BI stack and analysts whose job is to build the decision layer themselves, SegmentStream's engine is a solid backend. For teams where the person owning measurement is also the person making the budget call, TrustData is designed to close that loop without a second tool.

Frequently Asked Questions

Measurement + dashboard + AI visibility, one platform

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