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Contractor or employee - the 2022 High Court contract-primacy approach

One task across 30 published runs. Inspect the scores and outputs together, with each run's execution method shown.

All experimentsModel resultsDesigner buildsCompare models
Task
LAW-0004
Domain
Australian law
Difficulty
hard

Leading published run: claude-opus-4-8 (low reasoning) at 100.0% composite. Lowest: claude-haiku-4-5 at 0.0%. 30 published runs shown on this task.

How this task was evaluated

Results are ordered by this task's published score. API runs use one prompt and one completion; agent runs use a coding harness with tools and iteration. Inspect the execution method when comparing results.

Objective scores use the benchmark's execution checks. Judge scores use a vision panel's fixed rubric; the published score leaves out a model's own family. Missing values are labelled rather than treated as zero.

Read the brief

This is a benchmarking hypothetical, not legal advice. The law is the approach the High Court of Australia took in 2022, as at FY2025-26. A young labourer signs a comprehensive written contract with a labour-hire company. The contract describes him as a "self-employed contractor", but it also requires him to do the work the labour-hire company directs, to work when and where it tells him on its client's sites, and gives the company the right to control how he carries out the work. He has no business of his own, supplies no significant equipment, and cannot delegate the work. The written contract is not a sham and is wholly in writing. Answer in three parts: (a) On one line beginning with "Classification:" state the single word employee or contractor. (b) State the controlling approach the High Court adopted and name the leading case. (c) Name one practical consequence of the classification for the engaging business.

Anthropicclaude-opus-4-8
Low reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Medium reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
High reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Extra-high reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Max reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-4-6
High reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-5
High reasoning
Agent harness2026-07-21
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-fable-5
High reasoning
Agent harness2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
Zhipuglm-5.2
default reasoning
API single-shot2026-07-17
Composite 100.0%Objective 100.0%
Open outputFull run
Moonshotkimi-k2.7-code
default reasoning
API single-shot2026-07-17
Composite 100.0%Objective 100.0%
Open outputFull run
Moonshotkimi-k3
default reasoning
API single-shot2026-07-17
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.4-mini
High reasoning
API single-shot2026-06-23
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-terra
High reasoning
API single-shot2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-luna
High reasoning
API single-shot2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-pro-preview
High reasoning
API single-shot2026-06-23
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.5-flash
default reasoning
API single-shot2026-06-23
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-flash-lite
default reasoning
API single-shot2026-06-23
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
High reasoning
API single-shot2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
Medium reasoning
API single-shot2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
Low reasoning
API single-shot2026-07-09
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.3
default reasoning
API single-shot2026-07-03
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.20-reasoning
default reasoning
API single-shot2026-06-25
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-build-0.1
default reasoning
API single-shot2026-06-25
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-composer-2.5-fast
default reasoning
Agent harness2026-06-25
Composite 100.0%Objective 100.0%
Open outputFull run
DeepSeekdeepseek-v4-pro
default reasoning
API single-shot2026-06-25
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.5
High reasoning
API single-shot2026-07-17
Composite 75.0%Objective 75.0%
Open outputFull run
OpenAIgpt-5.6-sol
High reasoning
API single-shot2026-07-09
Composite 75.0%Objective 75.0%
Open outputFull run
OpenAIgpt-5.6-sol
Max reasoning
API single-shot2026-07-09
Composite 75.0%Objective 75.0%
Open outputFull run
DeepSeekdeepseek-v4-flash
default reasoning
API single-shot2026-06-25
Composite 25.0%Objective 25.0%
Open outputFull run
Anthropicclaude-haiku-4-5
High reasoning
Agent harness2026-07-09
Composite 0.0%Objective 0.0%
Open outputFull run

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