# Google Meridian vs Recast: which do AI models recommend for Attribution & MMM, October 2026

GTM AI Recommendation Index, October 2026 Edition, Attribution and marketing mix modeling. Zero of fourteen models named Google Meridian first on the direct prompt; zero named Recast. Page: https://gtm-ai-index.com/marketing/attribution-mmm/google-meridian-vs-recast/

| | First-choice share | Rank | Negative rate | Labels | Models naming it |
|---|---|---|---|---|---|
| Google Meridian | 5% | #4 of 17 | 12% | 34 | 13 of 14 |
| Recast | 3% | #7 of 17 | 13% | 15 | 9 of 14 |

## The direct prompt, model by model

- Kimi K2: neither first, one named (first choices: Dreamdata) (alternatives: Factors.ai, Recast, Rockerbox)
- Claude Haiku 4.5: neither named (first choices: Dreamdata, HockeyStack) (alternatives: CaliberMind, HubSpot Marketing Hub, Rockerbox, SegmentStream)
- GPT-5.4 mini: neither named (first choices: Dreamdata) (alternatives: HockeyStack, Measured)
- Gemini 3.5 Flash: neither named (first choices: CaliberMind) (alternatives: Dreamdata, HockeyStack, RevSure, SegmentStream)
- Perplexity Sonar: neither named (first choices: Dreamdata) (alternatives: HockeyStack, Improvado, SegmentStream)
- Grok 4.1 Fast: neither named (first choices: Dreamdata) (alternatives: Factors.ai, HockeyStack, Rockerbox)
- Mistral Small: neither named (first choices: Dreamdata, MixModeler) (alternatives: Northbeam)
- DeepSeek V4 Flash: neither named (first choices: Dreamdata, Rockerbox) (alternatives: HockeyStack, Marketing Evolution, Measured)
- Llama 4 Maverick: neither named (first choices: Rockerbox) (alternatives: Attribution, Dreamdata, Northbeam)
- Qwen 3.7 Flash: neither named (first choices: Rockerbox) (alternatives: Dreamdata)
- GLM 4.7 FlashX: neither named (first choices: Dreamdata) (alternatives: Cometly, HubSpot Marketing Hub, Keen Decision Systems, Rockerbox, Ruler Analytics)
- MiniMax M2.5: neither named (first choices: HockeyStack, Marketing Evolution) (alternatives: Adobe Marketo Measure, Dreamdata)
- GPT-6 Luna: neither named (first choices: HockeyStack) (alternatives: Dreamdata, Paramark)
- Muse Glimmer 30B: neither named (first choices: Dreamdata) (alternatives: Admetrics, Adobe Marketo Measure, HockeyStack, Rockerbox)

## What the models said about Google Meridian

- "Free, open-source libraries like Google Meridian or Meta Robyn require dedicated data scientists... a SaaS platform with a managed service component is almost always the right choice" (Gemini 3.5 Flash, scale prompt, soft negative)
- "Mid-market companies rarely have full-time data scientists to manage open-source MMM code (like Google Meridian or Meta Robyn)" (Gemini 3.5 Flash, direct prompt, soft negative)
- "Google Meridian if you lack data or modeling support. Meridian is open source, not a turnkey measurement service." (GPT-6 Luna, negative prompt, soft negative)
- "open-source MMM tools like Meta's Robyn or Google's Meridian are increasingly attractive due to their transparency and cost-effectiveness" (Mistral Small, negative prompt, first choice)
- "Open-source Bayesian MMM, native Google Ads integration... Successor to LightweightMMM; free, transparent code" (GLM 4.7 FlashX, comparative prompt, first choice)
- "Google's Meridian is a Bayesian MMM framework released openly for anyone to use—no licensing fees." (Grok 4.1 Fast, budget prompt, first choice)

## What the models said about Recast

- "Enterprise-grade, managed MMM and multi-touch attribution (MTA) platforms (like Recast, Measured, or Rockerbox) routinely cost upwards of $50,000 to $150,000+ per year." (Gemini 3.5 Flash, budget prompt, soft negative)
- "Recast has limitations if you need custom transformations—like modeling promo mechanics with different lag structures per SKU." (Claude Haiku 4.5, negative prompt, soft negative)
- "Recast | Self-serve Bayesian MMM, fast refresh, no data science team needed | Companies wanting modern MMM without heavy lift" (Kimi K2, scale prompt, first choice)
- "If you have 1-2 analysts with intermediate statistics experience, look closely at Recast or Haus." (Gemini 3.5 Flash, scale prompt, first choice)
- "Add MMM with: Recast ... offers the best balance of modern methodology and mid-market accessibility" (Kimi K2, paraphrase prompt, alternative)

Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all fourteen models, for a mid-market B2B company; rank is within the category. Comparisons are drawn for the top eight products in each category. Published under CC BY 4.0; the output is the models' output, and nothing here is a recommendation by the index.