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Banja Lab / Benchmarks / Test

BASQU-0002Australian accounting · hard

QLD trades quarter - scripted BAS, GST, state holiday, and a backdate refuse turn

The same task, run on 27 models. Compare the outputs side by side, or open any one in a popup to inspect it.

Top result: claude-opus-4-8 (low reasoning) at 100.0% composite. Lowest: deepseek-v4-flash at 0.0%. 27 models compared on this task.

How it ran
  • Each model was given the brief below in a fresh, isolated session with no access to our tools, and returned its answer from scratch.
  • The rendered output was scored 1 to 5 on brief fidelity, visual design, craft, and impact by a four-family vision panel - Anthropic (Claude Opus 4.8), OpenAI (GPT-5.5), Google (Gemini 3.1 Pro), and xAI (Grok 4.3) - using one identical prompt so the scores compare. The published judge score is leave-one-family-out: a model is never scored by a judge of its own family, so same-family self-preference is removed.
The brief

This is a benchmarking hypothetical, not tax advice. Figures and public-holiday dates are as at FY2025-26 (Australia). You are acting as the bookkeeper for a trades business registered in Queensland (QLD). This is a SCRIPTED MULTI-TURN run for one quarter. You will be asked a sequence of questions, one per turn. Answer each turn on its own, and keep your earlier answers consistent across the whole run. Quarter figures (all sales and purchases are GST-taxable at the standard 10% rate, so each GST-inclusive amount contains one eleventh of GST): - Total sales including GST: $132,000 - Total purchases including GST: $77,000 - Gross wages paid to employees: $50,000 - PAYG withholding rate applied to those wages: 21% There are no PAYG instalments, fuel tax credits, or other amounts this quarter. Reminder: GST on a GST-inclusive amount is that amount divided by 11, never 10% added on top. Net GST is 1A minus 1B. Use the public-holiday date for the business's own state and the holiday actually named.

Anthropicclaude-opus-4-8
Low reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Medium reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Extra-high reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Max reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-4-6
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-5
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-fable-5
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-haiku-4-5
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-pro-preview
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.5-flash
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-flash-lite
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.3
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.20-reasoning
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-composer-2.5-fast
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-4-6
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-fable-5
High reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
DeepSeekdeepseek-v4-pro
default reasoning
Composite 100.0%Objective 100.0%
Open outputFull run
Zhipuglm-5.2
default reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
Moonshotkimi-k2.7-code
default reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
OpenAIgpt-5.5
High reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
OpenAIgpt-5.4-mini
High reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-build-0.1
default reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-sonnet-5
High reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-haiku-4-5
default reasoning
Composite 0.0%Objective 0.0%
Open outputFull run
DeepSeekdeepseek-v4-flash
default reasoning
Composite 0.0%Objective 0.0%
Open outputFull run