Car rental companies
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: Enterprise Rent-A-Car, Hertz, and National Car Rental share the top tier for these 5 API models.
Tier 1
- Enterprise Rent-A-Car77%95% interval 65–87%plausible rank 1–3
- National Car Rental55%95% interval 44–66%plausible rank 1–6
- Hertz33%95% interval 22–45%plausible rank 1–8
Tier 2
- Alamo Rent A Car30%95% interval 20–41%plausible rank 2–7
- Avis28%95% interval 19–38%plausible rank 2–8
- Budget Rent a Car16%95% interval 8–27%plausible rank 2–10
- Thrifty Car Rental5%95% interval 1–13%plausible rank 3–10
Tier 3
- Dollar Rent A Car4%95% interval 0–12%plausible rank 4–10
- Sixt3%95% interval 0–9%plausible rank 6–10
- Fox Rent A Car2%95% interval 0–11%plausible rank 6–10
Drag across the chart to probe a share.
Too closeNo single favourite: Enterprise Rent-A-Car, Hertz, and National Car Rental share the top tier for these 5 API models.
| Brand | Choice share | 95% interval | Plausible rank | Tier |
|---|---|---|---|---|
| Enterprise Rent-A-Car | 77% | 65–87% | 1–3 | Tier 1 |
| National Car Rental | 55% | 44–66% | 1–6 | Tier 1 |
| Hertz | 33% | 22–45% | 1–8 | Tier 1 |
| Alamo Rent A Car | 30% | 20–41% | 2–7 | Tier 2 |
| Avis | 28% | 19–38% | 2–8 | Tier 2 |
| Budget Rent a Car | 16% | 8–27% | 2–10 | Tier 2 |
| Thrifty Car Rental | 5% | 1–13% | 3–10 | Tier 2 |
| Dollar Rent A Car | 4% | 0–12% | 4–10 | Tier 3 |
| Sixt | 3% | 0–9% | 6–10 | Tier 3 |
| Fox Rent A Car | 2% | 0–11% | 6–10 | 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).