Northbeam vs SegmentStream in 2026: Ecommerce media mix modeling vs cross-channel attribution with an AI agent layer
Northbeam is a media buying tool for DTC brands optimizing Meta and TikTok spend. SegmentStream is a broader measurement engine with incrementality testing and an MCP server that lets Claude or ChatGPT act on your attribution data directly.
Northbeam
SegmentStream- SegmentStream exposes its attribution engine through an MCP server, letting AI agents in Claude, ChatGPT, Cursor, or Gemini query data and reallocate budgets conversationally. Northbeam has no equivalent AI-agent integration.
- Northbeam combines multi-touch attribution with media mix modeling from its Scale tier up. SegmentStream layers cross-channel attribution, incrementality testing, and marginal analytics, with incrementality testing an add-on below Enterprise.
- SegmentStream publishes a starting price of $800 per month for its Online tier. Northbeam has no published pricing at any tier and requires a sales conversation to get a quote.
- Northbeam has creative-level analytics that break ad performance down by individual asset, useful for brands running heavy creative testing. SegmentStream has no equivalent creative reporting layer.
- SegmentStream connects to 20-plus ad platforms including Google, Meta, TikTok, LinkedIn, X, Pinterest, and Snapchat. Northbeam's connectors are narrower: Meta, Google, TikTok, Snapchat, and Pinterest.
- Automated budget allocation is a core Enterprise feature on SegmentStream ($5,000/mo) but only an add-on below that. Northbeam offers budget scenario planning, a related but distinct manual-modeling feature, from its Scale tier.
Northbeam and SegmentStream both replace platform-reported ROAS with first-party attribution, but the products are built around different core bets. Northbeam pairs multi-touch attribution with media mix modeling and same-day data refresh, aimed squarely at DTC and ecommerce media buyers managing paid social and search spend. SegmentStream goes further into the measurement stack with incrementality testing, marginal analytics, and automated budget allocation across 20-plus ad platforms, and adds an MCP integration that connects the whole engine to AI agents in Claude, ChatGPT, Cursor, or Gemini. Northbeam has no published pricing at all; SegmentStream at least publishes a starting floor of $800 per month, though full functionality is reserved for its $1,200 and $5,000 tiers.
The tools at a glance
Northbeam
Multi-touch attribution and media mix modeling for DTC and ecommerce brands
Northbeam is built for direct-to-consumer and ecommerce brands running significant paid spend across Meta, Google, and TikTok. It replaces platform-native ROAS, which systematically double-counts conversions across channels, with a first-party pixel and server-side attribution layer designed to survive iOS 14 tracking changes and cookie deprecation.
The platform combines multi-touch attribution with media mix modeling on a near-real-time refresh cycle, which is faster than most legacy MMM vendors that update weekly or monthly. Budget scenario planning turns the data into concrete reallocation recommendations, and creative analytics break performance down to the individual ad asset, a feature aimed at brands running large creative testing programs.
Every tier requires a sales conversation; there is no published price and no self-serve trial. Onboarding takes two to four weeks for pixel implementation and connector setup, and the statistical models need meaningful conversion volume before they produce reliable output.
| Feature | Growth Contact sales | Scale Contact sales | Enterprise Contact sales |
|---|---|---|---|
| Multi-touch attribution | Yes | Yes | Yes |
| Media mix modeling | No | Yes | Yes |
| Budget scenario planning | No | Yes | Yes |
| Creative analytics | Yes | Yes | Yes |
| BI connector | No | Yes | Yes |
| Custom integrations | No | No | Yes |
SegmentStream
Cross-channel attribution and automated budget allocation built for AI agents
SegmentStream consolidates cross-channel attribution, incrementality testing, marginal analytics, and automated budget allocation into one measurement engine, connecting to more than 20 ad platforms including Google, Meta, TikTok, LinkedIn, and Microsoft Ads. An identity graph stitches user journeys across channels and devices, with predictive attribution available on higher tiers.
The standout feature is an MCP (Model Context Protocol) integration that exposes the measurement engine directly to AI agents. Teams using Claude, ChatGPT, Cursor, or Gemini can query attribution data, generate reports, and reallocate budgets conversationally rather than through a traditional dashboard, positioning SegmentStream as measurement infrastructure for AI-assisted marketing workflows specifically.
Pricing starts at $800 per month for the Online tier, with incrementality testing and marginal analytics available only as an add-on below Enterprise at $5,000 per month, where they become included alongside server-side conversion tracking and automated budget allocation. There is no self-serve free trial; Enterprise customers can access a paid three-month proof-of-concept.
| Feature | Online From $800/mo | Full Funnel From $1,200/mo | Enterprise From $5,000/mo |
|---|---|---|---|
| Cross-Channel Attribution | Yes | Yes | Yes |
| Incrementality Testing | Add-on | Add-on | Yes |
| Marginal Analytics | Add-on | Add-on | Yes |
| AI Agent & MCP Access | Yes | Yes | Yes |
| CRM & Warehouse Conversions | No | Yes | Yes |
| Automated Budget Allocation | No | No | Yes |
Head-to-head feature comparison
| Feature | Northbeam | SegmentStream |
|---|---|---|
| Primary use case | DTC and ecommerce paid media attribution | Cross-channel measurement for AI-assisted marketing teams |
| Multi-touch / cross-channel attribution | Yes (MTA) | Yes (identity graph, predictive on higher tiers) |
| Media mix modeling or incrementality testing | MMM, Scale tier and up | Incrementality testing, add-on below Enterprise |
| Automated budget allocation | No (budget scenario planning instead, Scale tier and up) | Enterprise tier only |
| AI agent / MCP integration | No | Yes (MCP server for Claude, ChatGPT, Cursor, Gemini) |
| Creative-level analytics | Yes | No |
| Ad platform connectors | Meta, Google, TikTok, Snapchat, Pinterest | 20+ platforms incl. Google, Meta, TikTok, LinkedIn, X, Pinterest, Snapchat |
| Free trial or published pricing | No, contact sales only | No free trial, published starting price |
| Starting price | Contact sales, no published floor | From $800/month |
Which should you choose?
NorthbeamSegmentStreamSegmentStreamNorthbeamSegmentStreamSegmentStreamThe MCP integration is the single biggest differentiator in this comparison. If your team already routes marketing decisions through Claude or ChatGPT and wants attribution data queryable inside that workflow, SegmentStream is doing something Northbeam has not built. If your priority is ecommerce-specific creative-level reporting and MMM without navigating incrementality-testing add-on pricing, Northbeam's narrower ecommerce focus is the more direct fit, though you will need a sales call just to find out what it costs.
Bottom line
Choose Northbeam if you are a DTC or ecommerce brand that wants creative-level ad analytics alongside MTA and MMM, and you are comfortable with a fully sales-led pricing process. Choose SegmentStream if you manage spend across 20-plus platforms, want incrementality testing and automated budget allocation, and are building workflows where an AI agent needs direct access to your attribution data. SegmentStream at least gives you a $800 per month starting number to plan around; Northbeam gives you none until you take the call.
Frequently asked questions
What does SegmentStream's MCP integration actually let you do?
MCP (Model Context Protocol) is an open standard that lets AI assistants connect directly to external tools. SegmentStream exposes its attribution engine as an MCP server, so Claude, ChatGPT, Cursor, or Gemini can query your attribution data, generate custom reports, and reallocate budgets conversationally instead of through a traditional dashboard. Northbeam has no equivalent feature.
Is incrementality testing included on SegmentStream's base plan?
No. On the $800 per month Online tier and the $1,200 per month Full Funnel tier, incrementality testing is an add-on rather than included by default. It becomes a core included feature only on the $5,000 per month Enterprise tier, alongside automated budget allocation and server-side conversion tracking.
Which tool is cheaper, Northbeam or SegmentStream?
It is impossible to say definitively because Northbeam has no published pricing at any tier and requires a sales conversation to get a quote. SegmentStream at least publishes a $800 per month floor for its Online tier, though full incrementality testing and automated budget allocation push the realistic cost toward the $1,200 or $5,000 per month tiers.
Does Northbeam have anything comparable to SegmentStream's automated budget allocation?
Northbeam's closest equivalent is budget scenario planning, available from the Scale tier up, which models the projected revenue impact of shifting spend between channels based on MMM response curves. This is a modeling and recommendation tool rather than an automated action; SegmentStream's Enterprise tier actually automates the reallocation itself.
Can either tool measure channels without trackable clicks, like TV or podcast ads?
Northbeam's media mix modeling layer, available from the Scale tier, is designed specifically to estimate the contribution of channels without user-level tracking, including streaming, podcast, and billboard spend. SegmentStream's public feature set is centered on digital, click-trackable ad platforms and does not document equivalent upper-funnel offline-channel modeling.