Email marketing platforms
Which brand 5 AI models pick, with intervals.
Fast panel · Panel, equal weight
- anthropic/claude-haiku-5.5 @ claude-haiku-5.5 via OpenRouter (20%)
- openai/gpt-6-luna @ gpt-6-luna via OpenRouter (20%)
- google/gemini-4-argon @ gemini-4-argon via OpenRouter (20%)
- mistralai/mistral-large-4-0 @ mistral-large-4-0 via OpenRouter (20%)
- deepseek/deepseek-v4.1-flash @ deepseek-v4.1-flash via OpenRouter (20%)
Too closeNo single favourite: ActiveCampaign, Brevo, Constant Contact, GetResponse, Kit, Klaviyo, Mailchimp, and MailerLite share the top tier for these 5 API models.
Tier 1
- ActiveCampaign45%95% interval 32–57%plausible rank 1–7
- MailerLite41%95% interval 29–53%plausible rank 1–8
- Mailchimp32%95% interval 22–43%plausible rank 1–9
- Klaviyo26%95% interval 15–38%plausible rank 1–10
- Brevo22%95% interval 13–32%plausible rank 1–10
- Kit22%95% interval 13–33%plausible rank 1–10
- GetResponse20%95% interval 12–30%plausible rank 2–10
- Constant Contact19%95% interval 8–31%plausible rank 1–10
Tier 2
- AWeber14%95% interval 7–23%plausible rank 3–10
- Campaign Monitor12%95% interval 5–20%plausible rank 4–10
Drag across the chart to probe a share.
Changes since the previous edition
The judge panel changed since the previous edition, so shares are not compared between the two.
- mistralai/mistral-large-4-0 @ mistral-large-4-0 via OpenRouter: same model, new judge settings
This note was added after publication from the published editions; the signed snapshot is unchanged. Corrections log
Too closeNo single favourite: ActiveCampaign, Brevo, Constant Contact, GetResponse, Kit, Klaviyo, Mailchimp, and MailerLite share the top tier for these 5 API models.
| Brand | Choice share | 95% interval | Plausible rank | Tier |
|---|---|---|---|---|
| ActiveCampaign | 45% | 32–57% | 1–7 | Tier 1 |
| MailerLite | 41% | 29–53% | 1–8 | Tier 1 |
| Mailchimp | 32% | 22–43% | 1–9 | Tier 1 |
| Klaviyo | 26% | 15–38% | 1–10 | Tier 1 |
| Brevo | 22% | 13–32% | 1–10 | Tier 1 |
| Kit | 22% | 13–33% | 1–10 | Tier 1 |
| GetResponse | 20% | 12–30% | 2–10 | Tier 1 |
| Constant Contact | 19% | 8–31% | 1–10 | Tier 1 |
| AWeber | 14% | 7–23% | 3–10 | Tier 2 |
| Campaign Monitor | 12% | 5–20% | 4–10 | Tier 2 |
How to read this
- Choice share: how often models pick a brand when it appears in a shortlist of 4. Chance is 25%, the dashed line.
- The band is the 95% interval; the bright tick is the estimate. Overlapping bands are not a strict order.
- Tiers are published: a tier groups brands not distinguishable from that tier's leader. Same tier does not mean equal.
- Rank shows the plausible rank range, not a strict place.
- Drag across the chart to probe a share and see which intervals contain it.
- Brand names only: the models saw each option as a brand name, with no product facts, and answered from their own knowledge.
- Fast panel: the fast or small current models of each vendor, not the full flagship panel.
- Each page shows the latest edition. Dates are in the downloadable JSON.
Panel and conditions
Each edition puts the brands of the category to a panel of AI models, called through their APIs, in randomized shortlists of 4 (chance is 25%). Each option was a brand name only, with no product facts, prices or any commercial data, so a brand's share measures which brand the models recommend from their own knowledge for the shopper needs of the scenarios. Shares come with 95% intervals; tiers and rank intervals are simultaneous at the same level.
- anthropic/claude-haiku-5.5 @ claude-haiku-5.5 via OpenRouter (20%)
- openai/gpt-6-luna @ gpt-6-luna via OpenRouter (20%)
- google/gemini-4-argon @ gemini-4-argon via OpenRouter (20%)
- mistralai/mistral-large-4-0 @ mistral-large-4-0 via OpenRouter (20%)
- deepseek/deepseek-v4.1-flash @ deepseek-v4.1-flash via OpenRouter (20%)
Conditions: closed-book API calls via OpenRouter (pinned providers); web search, grounding, tools and retrieval off; forced choice; 2 paraphrases per scenario in English.
Methodology: ACM-1.0-chart-draft (draft rules for movement, significance and events, awaiting review).