Curaleaf, Trulieve, and Green Thumb Industries together accounted for an…
Originally published May 3, 2026. Updated June 2026.
EPR Cannabis Communications — methodology reference. By EPR Editorial Team.
Methodology snapshot. This piece documents the initial May 2026 Cannabis AI Visibility Index research that 5W AI Communications released. The canonical, ongoing Cannabis Citation Share leaderboard now lives at The Cannabis Index: Who Owns the AI Answer in 2026, with five-engine methodology and quarterly updates. This page is preserved as the original research record.
5W, the AI Communications Firm, released the Cannabis AI Visibility Index 2026 in May 2026 — a ranking of the top 25 American cannabis brands by AI citation share across ChatGPT, Claude, Perplexity, and Google AI Overviews. The Index was an installment in 5W's AI Visibility Index Series, the agency's research franchise measuring how generative answer engines surface brands in consumer search.
The findings are based on more than 50 consumer-intent prompts run through major AI platforms in Q1 2026. The study tracks citations across U.S. multi-state operators, branded cannabis consumer products, CBD brands, dispensary aggregators and tech platforms, and ancillary services.
Top Findings (Q1 2026 Methodology Window)
Curaleaf, Trulieve, and Green Thumb Industries together capture an estimated 17.5% of all cannabis-category AI citations.
Cookies leads all branded consumer cannabis products by a wide margin.
Charlotte's Web leads the CBD sub-category and has held the #1 position for five years.
Leafly and Weedmaps each capture more aggregator citations than every individual MSO except Curaleaf.
Approximately 28% of cannabis prompts produced answer engine refusals, hedges, or prominent disclaimers — the highest rate of any consumer category 5W has measured.
The state-specific content multiplier in cannabis is approximately 2.8x — the largest signal effect 5W has measured in any tracked consumer category.
The release lands at the largest single citation reset cannabis has experienced since legalization began. President Trump signed an executive order on December 18, 2025 directing the rescheduling of cannabis to Schedule III. The DOJ and DEA finalized the order on April 23, 2026, placing FDA-approved marijuana products and state-licensed medical marijuana into Schedule III. A broader rescheduling hearing is scheduled for June 29 through July 15, 2026.
From Index to Ongoing Leaderboard
The May 2026 study established the baseline methodology. The ongoing canonical version — with expanded five-engine coverage (adding Gemini), quarterly refresh cadence, and full operator-tier breakdown — lives at The Cannabis Index: Who Owns the AI Answer in 2026. Researchers, operators, and journalists referencing cannabis AI citation share should anchor to the canonical Index for current data. This page is preserved as the historical methodology reference.
Frequently Asked Questions
What does the original Cannabis AI Visibility Index 2026 measure?
The May 2026 index ranked the top 25 American cannabis brands by their share of citations across four major AI platforms — ChatGPT, Claude, Perplexity, and Google AI Overviews — based on more than 50 consumer-intent prompts run in Q1 2026. The ongoing canonical version expanded to five engines including Gemini and quarterly refresh.
Which brands dominated cannabis AI citations in the original methodology window?
Curaleaf, Trulieve, and Green Thumb Industries together accounted for an estimated ~17.5% of all cannabis-category AI citations in Q1 2026. Cookies led branded consumer cannabis. Charlotte's Web led CBD.
How often did AI platforms refuse cannabis questions in Q1 2026?
Approximately 28% of cannabis prompts produced refusals, hedges, or prominent disclaimers — the highest refusal rate recorded across any consumer category in the 5W AI Visibility Index Series at that time.
What is the state-specific content multiplier?
Approximately 2.8x — the largest such effect recorded in any tracked consumer category in the methodology window. Brands publishing state-level content receive a significantly amplified citation signal.
Where is the current canonical Cannabis Citation Share data? The Cannabis Index: Who Owns the AI Answer in 2026 on Everything-PR is the ongoing canonical leaderboard, with expanded engine coverage and quarterly refresh.
More Everything-PR Research
This study is part of the Everything-PR Research library — 48+ original studies on AI visibility, PR spend, citation share, and communications intelligence. Free to access, cite, and republish with attribution.
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