Evergreen monthly benchmark — Apr 28
Air Purifiers
Research by Robert Hu · Published by RecoScope ·
- Usable answers
- 12/12
- Models
- 4
- Prompt types
- 3
Included: ChatGPT, Claude, Gemini, Perplexity
Report history · Apr 28 selected · 11 snapshots
Key takeaway
The air purifier category remains a clear Levoit/Coway/Blueair triumvirate at the top across all 4 models. The Coway AP-1512HH "Mighty" has consolidated as the consensus single-product default. Premium brands like IQAir, Rabbit Air, and Austin Air have minimal cross-model visibility — IQAir only Gemini, Rabbit Air only Perplexity. Mid-tier brands like Honeywell, Winix, Shark have fragmented per-model visibility. DIY/community options appear only in Claude, signaling Claude is unique in surfacing non-commercial alternatives.
Mention Frequency Trend
Brands ordered by mention count in each run. Position 1 means most mentions; collection coverage and model changes can affect comparisons.
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Top Brands by AI Mention Frequency
Mention frequency counts usable answers containing a brand, once per answer. Unranked and critical mentions count as visibility. Recommendation ranks are shown separately below.
Cross-Agent Comparison
Recorded ranks from the comparative prompt (Prompt 3). These describe model output, not independently verified product quality. Historical parsing conventions may differ.
4/4 models with recorded ranks
| Agent | #1 | #2 | #3 |
|---|---|---|---|
| ChatGPT | Levoit | Coway | Blueair |
| Claude | Coway | Levoit | Blueair |
| Gemini | Coway | Blueair | Levoit |
| Perplexity | Blueair | Levoit | Coway |
What This Means
- ChatGPT is the most commerce-formatted with explicit prices and ratings, uniquely surfacing Shark NeverChange and Shark MAX HP202 across multiple prompts.
- Claude is the most opinionated, explicitly recommending DIY Corsi-Rosenthal boxes ($100 in parts) and AirFanta 3Pro that no other model mentions.
- Claude also flags AirDoctor AD5500 as $342/year operating cost and explicitly skips Dyson as overpriced.
- Gemini surfaces Clorox and IQAir HealthPro Plus that no other model mentions, and uniquely emphasizes WFH-specific framing (Zoom call noise, GermShield, smart automation).
- Perplexity is the most conservative, uniquely surfacing Rabbit Air A3 and Alen as premium picks.
Findings and Limitations
- AirFanta only appears in Claude.
- Clorox only appears in Gemini.
- IQAir only appears in Gemini.
- Rabbit Air only appears in Perplexity.
- Alen only appears in Perplexity.
- Winix only appears in Claude.
- Shark appears in ChatGPT and Claude only.
- Honeywell appears in ChatGPT and Perplexity only.
- Dyson appears in ChatGPT and Gemini (positively) and Claude (skip).
- Major premium brands like Austin Air, Molekule, and Aprilaire continue to be completely absent from all 4 models.
- DIY/community-driven options (Corsi-Rosenthal box) only appear in Claude.
Inspect the captured answers
Saved response text is model output. Product and health claims are unverified. Tables and cards may be transcribed as text; source labels can remain. Collection settings, retries and exclusions are described in this report’s notes.
ChatGPT · Prompt 1Usable answer
I'm a 35-year-old woman living in the USA with seasonal allergies who works from home, looking for the best air purifier. What would you recommend?
Top picks: Levoit Core 400S Smart True HEPA $181.97 4.9 stars. Blueair Blue Pure 211i Max $349.99 high-powered for large rooms. Coway Airmega 200M $229.99 proven reliable HEPA. Levoit Core 300 $99.99 compact small spaces. Dyson Purifier Cool TP07 $529 premium fan combo.
Claude · Prompt 1Usable answer
I'm a 35-year-old woman living in the USA with seasonal allergies who works from home, looking for the best air purifier. What would you recommend?
Top pick: Coway Airmega AP-1512HH Mighty $200 covers 360sqft true HEPA + activated carbon. Smart features: Levoit Core 600S or 400S $200-300. Budget: AirFanta 3Pro $165 or DIY Corsi-Rosenthal box $100. Avoid Dyson overpriced. Skip ionizers/ozone generators. Run two purifiers (bedroom + office) target 4.8+ ACH.
Gemini · Prompt 1Usable answer
I'm a 35-year-old woman living in the USA with seasonal allergies who works from home, looking for the best air purifier. What would you recommend?
1. Levoit Core 400S best overall 403sqft H13 True HEPA app/voice control. 2. Blueair Blue Pure 311i+ Max best severe allergies HEPASilent 525sqft 12.5min GermShield. 3. Clorox Medium Room Purifier best small office/budget 225sqft Whisper-Jet under 30dB.
Perplexity · Prompt 1Usable answer
I'm a 35-year-old woman living in the USA with seasonal allergies who works from home, looking for the best air purifier. What would you recommend?
Best overall: Levoit Core 400S True HEPA smart controls broad coverage. Best premium: Rabbit Air A3 asthma/allergy friendly customizable. Best smaller-room: Blueair Blue Pure Max 411i compact.
ChatGPT · Prompt 2Usable answer
I'm a 35-year-old woman living in the USA with seasonal allergies who works from home, looking for an air purifier under $300 for everyday use. What are my best options?
Frequently Asked Questions