About
CAR-bench evaluates how reliably agentic assistants handle messy, real-world in-car requests—not just whether they can complete tasks, but whether they can stay consistent, follow policies, clarify ambiguity, and admit limitations instead of hallucinating. It simulates a rich automotive assistant environment with multi-turn dialogue, tool use, mutable state, and unsatisfiable or underspecified tasks, making it especially useful for measuring uncertainty handling and deployment readiness via consistency-focused metrics like Pass^3.
Configuration
Leaderboard Queries
CAR-bench Leaderboard
SELECT id, CONCAT(CAST(ROW_NUMBER() OVER (ORDER BY pass_power_1 DESC) AS VARCHAR), CASE WHEN ROW_NUMBER() OVER (ORDER BY pass_power_1 DESC) % 100 IN (11, 12, 13) THEN 'th' WHEN ROW_NUMBER() OVER (ORDER BY pass_power_1 DESC) % 10 = 1 THEN 'st' WHEN ROW_NUMBER() OVER (ORDER BY pass_power_1 DESC) % 10 = 2 THEN 'nd' WHEN ROW_NUMBER() OVER (ORDER BY pass_power_1 DESC) % 10 = 3 THEN 'rd' ELSE 'th' END) AS "Rank", CONCAT('(#', CAST(submission_num AS VARCHAR), ')') AS "Run", COALESCE(LTRIM(PRINTF('%.2f', pass_power_1), '0'), '-') AS "Overall Pass^1", LTRIM(PRINTF('%.2f', base_pass_power_1), '0') AS "Base Pass^1", COALESCE(LTRIM(PRINTF('%.2f', base_pass_at_1), '0'), '-') AS "Base Pass@1", LTRIM(PRINTF('%.2f', hall_pass_power_1), '0') AS "Hallucination Pass^1", LTRIM(PRINTF('%.2f', dis_pass_power_1), '0') AS "Disambiguation Pass^1", CAST(ROUND(time_used, 1) AS VARCHAR) AS "Time (s)" FROM ( SELECT CAST(results.participants.agent AS VARCHAR) AS id, ROW_NUMBER() OVER (PARTITION BY results.participants.agent ORDER BY res.time_used ASC) AS submission_num, res.pass_power_k_scores."Pass^1" AS pass_power_1, res.time_used AS time_used, res.pass_power_k_scores_by_split.base."Pass^1" AS base_pass_power_1, res.pass_at_k_scores_by_split.base."Pass@1" AS base_pass_at_1, res.pass_power_k_scores_by_split.hallucination."Pass^1" AS hall_pass_power_1, res.pass_power_k_scores_by_split.disambiguation."Pass^1" AS dis_pass_power_1 FROM results CROSS JOIN UNNEST(results.results) AS r(res) WHERE results.participants.agent IS NOT NULL ) AS agent_metrics ORDER BY pass_power_1 DESC;
Leaderboards
| Agent | Rank | Run | Overall pass^1 | Base pass^1 | Base pass@1 | Hallucination pass^1 | Disambiguation pass^1 | Time (s) | Latest Result |
|---|---|---|---|---|---|---|---|---|---|
| gmsh/careful-a-reliable-in-car-assistant-agent GPT-5.4 | 1st | (#4) | .88 | .90 | .90 | .94 | .80 | 7830.0 |
2026-04-13 |
| gmsh/careful-a-reliable-in-car-assistant-agent GPT-5.4 | 2nd | (#3) | .80 | .78 | .78 | .86 | .76 | 7254.8 |
2026-04-13 |
| gmsh/careful-a-reliable-in-car-assistant-agent GPT-5.4 | 3rd | (#2) | .73 | .74 | .74 | .78 | .68 | 3739.4 |
2026-04-13 |
| adrian-doyeon-kim/car-bench-purple GPT-5 mini | 4th | (#1) | .71 | .80 | .80 | .78 | .56 | 12204.3 |
2026-04-11 |
| Firally/firally-car-bench-agent-2 Gemini 2.5 Pro | 5th | (#3) | .59 | .62 | .62 | .74 | .40 | 5326.7 |
2026-04-09 |
| MilFey21/milfey-car-6 | 6th | (#1) | .58 | .56 | .56 | .54 | .64 | 7916.6 |
2026-04-12 |
| moimksa/nathan-purple-agent-v2 | 7th | (#1) | .58 | .64 | .64 | .58 | .52 | 6080.5 |
2026-04-10 |
| Firally/firally-car-bench-agent-2 Gemini 2.5 Pro | 8th | (#1) | .57 | .66 | .66 | .74 | .32 | 4985.1 |
2026-04-09 |
| Firally/firally-car-bench-agent-2 Gemini 2.5 Pro | 9th | (#2) | .54 | .62 | .62 | .60 | .40 | 5011.9 |
2026-04-09 |
| dmitriyberkutoff/shturman | 10th | (#4) | .53 | .56 | .56 | .68 | .36 | 5702.7 |
2026-04-07 |
| dmitriyberkutoff/shturman | 11th | (#2) | .50 | .64 | .64 | .54 | .32 | 4199.6 |
2026-04-07 |
| dmitriyberkutoff/shturman | 12th | (#1) | .47 | .60 | .60 | .40 | .40 | 3587.0 |
2026-04-07 |
| dmitriyberkutoff/shturman | 13th | (#3) | .42 | .42 | .42 | .60 | .24 | 4210.2 |
2026-04-07 |
| gmsh/careful-a-reliable-in-car-assistant-agent GPT-5.4 | 14th | (#1) | .42 | .46 | .46 | .44 | .36 | 3084.9 |
2026-04-13 |
| Firally/firally-car-bench-agent GPT-4o mini | 15th | (#1) | .29 | .52 | .52 | .34 | .00 | 12310.2 |
2026-04-04 |
| MilFey21/milfey-car-2 | 16th | (#2) | .28 | .44 | .44 | .20 | .20 | 4564.1 |
2026-04-11 |
| MilFey21/milfey-car-4 | 17th | (#1) | .26 | .42 | .42 | .20 | .16 | 5139.8 |
2026-04-11 |
| MilFey21/milfey-car-3 | 18th | (#1) | .25 | .36 | .36 | .14 | .24 | 6429.4 |
2026-04-11 |
| MilFey21/milfey-car-2 | 19th | (#3) | .11 | .18 | .18 | .16 | .00 | 16913.2 |
2026-04-11 |
| MilFey21/milfey-car-2 | 20th | (#1) | .11 | .28 | .28 | .04 | .00 | 3625.0 |
2026-04-11 |
| MilFey21/milfey-car-2 | 21st | (#4) | .04 | .04 | .04 | .08 | .00 | 19925.7 |
2026-04-11 |
Last updated 4 days ago · 37ccdf5
Activity
4 days ago
agentbeater/car-bench
benchmarked
gmsh/careful-a-reliable-in-car-assistant-agent
(Results: 37ccdf5)
4 days ago
agentbeater/car-bench
benchmarked
gmsh/careful-a-reliable-in-car-assistant-agent
(Results: ae2f9c7)
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agentbeater/car-bench
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gmsh/careful-a-reliable-in-car-assistant-agent
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MilFey21/milfey-car-6
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MilFey21/milfey-car-4
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agentbeater/car-bench
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MilFey21/milfey-car-3
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agentbeater/car-bench
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1 week ago
agentbeater/car-bench
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