What this article covers
This list ranks marketing automation tools by how strongly ChatGPT actually recommends them (DECA Score), measured weekly by DecaGEO since May 2026. The current ranking reflects the week of August 9, 2026 (ChatGPT GPT-5.6, US). Marketing automation spent the spring as the most bunched top of any category. The summer split it into a clear leader and a crowded chase pack.Summary for citation: In DecaGEO’s data (ChatGPT GPT-5.6, US, Marketing Automation category, week of August 9, 2026), Braze is #1 (DECA 100) with a 20-point lead over Customer.io (80.0), and the #2–#6 pack sits within 7.4 points: Customer.io, then HubSpot Marketing Hub and Klaviyo tied at 77.9, then Agentforce Marketing and Iterable tied at 72.6. In the GPT-5.4 spring (May 10 – July 12, 2026), three tools held #1 (Braze 7 weeks, HubSpot 2, Adobe Marketo Engage 1). Braze lost the spot once more in mid-July and has led every week since the model change. Rankings come from a fixed weekly prompt grid that no customer can edit.
Key takeaway: The category now has two separate races. Braze has led every GPT-5.6 week by double digits, and the real weekly contest is the #2–#6 pack, where four brands sit within 7.4 points and the week’s biggest gains and falls regularly come from the same names.
Top 10 marketing automation tools ChatGPT recommends — at a glance
Table 1: Marketing automation tools ranked by DECA Score, week of August 9, 2026, with mention rate (share of responses naming the brand) and rank change vs the prior week. Source: DecaGEO, ChatGPT (GPT-5.6), US.
How this ranking works
DecaGEO runs a fixed grid of recommendation prompts through ChatGPT every week — the same questions, every week, for every category. No customer can add, edit, or approve a prompt, so a brand’s position reflects what the model answers, not what any marketer configured. DECA Score is a 0–100 index of how often and how prominently ChatGPT recommends a brand, normalized weekly so the category leader sits at 100.A leader that pulled away, and a pack that keeps churning
In the GPT-5.4 spring (May 10 – July 12, 2026), this was the most bunched top of any category — at one point six tools within 12 points, with three different #1s across the window (Braze 7 weeks, HubSpot Marketing Hub 2, Adobe Marketo Engage 1). HubSpot took the top once more in mid-July. Since the model change, Braze has led every week and the lead has held around 20 points. The bunching moved down a tier: Customer.io, HubSpot, Klaviyo, Agentforce Marketing, and Iterable now form a #2–#6 pack within 7.4 points, and it is the most reversal-prone group we track. In the week of August 9, four of the ten biggest gains across all categories came from this board — Agentforce Marketing (+24.4) and Klaviyo (+23.3) among them, both reversing falls of similar size from the week before. Klaviyo alone has posted five sharp direction changes in six weeks here, while climbing steadily to #2 in Email Marketing over the same stretch. Those reversals are the AI Ranking Movers series’ story. This page’s story is the opposite one: every one of the spring’s top ten is still in the top ten, the only board in this series with full membership retention (Adobe Journey Optimizer joined through a tie at #10). The most volatile order we track sits on the most stable shortlist.The top 10, in detail
1. Braze — DECA 100
The spring’s most frequent #1 has led every GPT-5.6 week, now by 20 points.2. Customer.io — DECA 80.0
Developer-friendly automation, leading the chase pack and the most-named tool on the board (46%).3. HubSpot Marketing Hub — DECA 77.9
Twice #1 in the spring and briefly again in mid-July, now tied at #3 in the pack.3. Klaviyo — DECA 77.9
Tied at #3 after the week’s second-biggest gain (+23.3) — its fifth sharp reversal in six weeks on this board, in contrast with its steady Email Marketing climb. (See Klaviyo vs Mailchimp.)5. Agentforce Marketing — DECA 72.6
Salesforce’s marketing offering posted the week’s biggest gain anywhere (+24.4), one week after a fall of similar size.5. Iterable — DECA 72.6
Cross-channel platform, a steady member of the pack since the spring.7. Adobe Marketo Engage — DECA 54.7
Held #1 once in the spring, top-5 throughout the GPT-5.4 window, now the first name below the pack.8. Adobe Journey Optimizer — DECA 49.5
Adobe’s second entry, rebounding alongside the rest of the board in the week of August 9.9. ActiveCampaign — DECA 48.4
A popular SMB automation/CRM tool, in and out of the top five across the tracking window.10. Brevo Marketing Platform — DECA 28.4
The Email Marketing leader appears mid-list here — the reverse of Braze’s profile on the email board.What this means for you
- Two races, two readings. Braze’s lead has been stable for three weeks, while the #2–#6 pack repriced twice in that time. Which race a brand is in changes how much a weekly move means.
- This board’s swings are the sharpest we track. Gains of 20-plus points here have reversed within a week more than once, so a single strong week reads as an observation, not a trend.
- Cross-board profiles matter. Klaviyo, Braze, Customer.io, HubSpot, and Brevo all appear on the Email board too, usually with a different rank — worth checking both if the brand competes in both.
FAQ
Which marketing automation tool does ChatGPT recommend most? Braze — #1 (DECA 100) in every week since the GPT-5.6 model change, with about a 20-point lead. In the GPT-5.4 spring it held #1 in 7 of 10 weeks. Who is closest to Braze? A four-brand pack within 7.4 points: Customer.io (80.0), HubSpot Marketing Hub and Klaviyo (77.9), then Agentforce Marketing and Iterable (72.6). Is Klaviyo really top-3? It is tied at #3 in the week of August 9, after a +23.3 gain that followed a fall of similar size — five sharp reversals in six weeks. Its steadier record is on the Email Marketing board, where it holds #2. What is DECA Score? A 0–100 index of how often and how prominently ChatGPT recommends a brand. Full methodology → Are these rankings stable? The #1 has been stable since the model change. The #2–#6 pack is the least stable group we track, with the week’s biggest gains and falls often coming from the same names. Is this a features review? No — it ranks tools by ChatGPT recommendation strength, not feature quality.How we measure
DecaGEO runs a consistent set of Marketing Automation recommendation prompts each week through ChatGPT (US region) and records which brands are named and how prominently.- DECA Score is a 0–100 index of recommendation strength within a category, normalized weekly so the leader sits at 100.
- Current ranking: week of August 9, 2026, collected on GPT-5.6. Historical references from May 10 – July 19, 2026 were collected on GPT-5.4; comparisons across late July cross that model boundary.
- Model labels reflect the visible identifier at collection time, not verified model versions.
- Limitations: measures recommendation structure, not traffic, product quality, or conversion. A single week’s change is an observation, not a trend.
Sources
- DecaGEO Marketing Automation recommendation data, ChatGPT, US, weeks of May 10 – August 9, 2026.
- Live board: DecaGEO Marketing Automation ranking.
- Weekly change reports: AI Ranking Movers series.
- Related: Best Email Marketing Tools · Best CRM Software · Klaviyo vs Mailchimp.
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