Office chairs
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: Herman Miller and Steelcase share the top tier for these 5 API models.
Tier 1
- Herman Miller70%95% interval 60–79%plausible rank 1–2
- Steelcase55%95% interval 43–66%plausible rank 1–5
Tier 2
- Haworth40%95% interval 29–52%plausible rank 2–5
- Humanscale29%95% interval 19–39%plausible rank 2–6
- Branch26%95% interval 16–37%plausible rank 2–8
Tier 3
- SIHOO14%95% interval 8–22%plausible rank 4–11
- X-Chair9%95% interval 5–16%plausible rank 5–11
- FlexiSpot9%95% interval 4–17%plausible rank 6–11
- Secretlab9%95% interval 4–17%plausible rank 5–11
- Autonomous8%95% interval 4–14%plausible rank 6–11
- HON8%95% interval 3–15%plausible rank 6–11
Drag across the chart to probe a share.
Too closeNo single favourite: Herman Miller and Steelcase share the top tier for these 5 API models.
| Brand | Choice share | 95% interval | Plausible rank | Tier |
|---|---|---|---|---|
| Herman Miller | 70% | 60–79% | 1–2 | Tier 1 |
| Steelcase | 55% | 43–66% | 1–5 | Tier 1 |
| Haworth | 40% | 29–52% | 2–5 | Tier 2 |
| Humanscale | 29% | 19–39% | 2–6 | Tier 2 |
| Branch | 26% | 16–37% | 2–8 | Tier 2 |
| SIHOO | 14% | 8–22% | 4–11 | Tier 3 |
| X-Chair | 9% | 5–16% | 5–11 | Tier 3 |
| FlexiSpot | 9% | 4–17% | 6–11 | Tier 3 |
| Secretlab | 9% | 4–17% | 5–11 | Tier 3 |
| Autonomous | 8% | 4–14% | 6–11 | Tier 3 |
| HON | 8% | 3–15% | 6–11 | Tier 3 |
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.
- Beta: intervals are not yet small-sample calibrated.
- 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).