Tested prompt · Math
A discount, then sales tax: every AI model's reply, tested
We sent this everyday math prompt to all 16 models in llmwise, the same way the app sends a message, and checked every reply the same way. Here's each one as it came, with whether it passed, what it cost and how long it took.
Based on 16 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
Short answer
All 16 models passed this math prompt's check (final answer). The cheapest reply that passed was GPT-6 Luna's, at $0.000074; the fastest, DeepSeek V4.1 Flash's in 0.6 s. The dearest reply, Claude Fable 5.1's, cost 116 times as much ($0.0086).
The prompt, as sent, and its check
Checked by final answer, the same way for every model.
A discount, then sales tax (everyday)
A jacket is priced at $80. It's discounted by 25%, and then 10% sales tax is added to the discounted price. What does the jacket cost in the end? Show your working briefly, then end with a line that says "Final answer: " followed by the answer alone.
The final answer must be 66.
Exactly what this prompt's replies are checked against, with every other prompt of our test runs.
Every model's result
All 16 models on this prompt, in catalog order.
| Model | Result | Cost | Time | Reply |
|---|---|---|---|---|
| Claude Fable 5.1Anthropic | Passed: Final answer 66: right. | $0.0086 | 3.6 s | 63 tokens |
| Claude Opus 5.5Anthropic | Passed: Final answer 66: right. | $0.0037 | 2.7 s | 74 tokens |
| Claude Sonnet 5.5Anthropic | Passed: Final answer 66: right. | $0.0017 | 1.6 s | 65 tokens |
| Claude Sonnet 5Anthropic | Passed: Final answer 66: right. | $0.0015 | 1.9 s | 45 tokens |
| Claude Haiku 4.5Anthropic | Passed: Final answer 66: right. | $0.00074 | 1.1 s | 63 tokens |
| GPT-6 AstraOpenAI | Passed: Final answer 66: right. | $0.0063 | 1.9 s | 46 tokens |
| GPT-6 SolOpenAI | Passed: Final answer 66: right. | $0.0013 | 1.7 s | 45 tokens |
| GPT-6 LunaOpenAI | Passed: Final answer 66: right. | $0.000074 | 3.1 s | 44 tokens |
| Gemini 3.1 Pro (preview)Google | Passed: Final answer 66: right. | $0.0042 | 3.6 s | 73 tokens |
| Gemini 3.8 FlashGoogle | Passed: Final answer 66: right. | $0.00066 | 2.5 s | 89 tokens |
| DeepSeek V4.1 FlashDeepSeek | Passed: Final answer 66: right. | $0.00021 | 0.6 s | 41 tokens |
| DeepSeek V4 ProDeepSeek | Passed: Final answer 66: right. | $0.00019 | 2.7 s | 47 tokens |
| Grok 4.7xAI | Passed: Final answer 66: right. | $0.0027 | 3.9 s | 40 tokens |
| Kimi K3Moonshot | Passed: Final answer 66: right. | $0.0037 | 5.0 s | 50 tokens |
| GLM 5.3Z.ai | Passed: Final answer 66: right. | $0.00020 | 0.9 s | 37 tokens |
| GLM 5.3 FlashZ.ai | Passed: Final answer 66: right. | $0.000086 | 2.4 s | 33 tokens |
Cost: what OpenRouter charged us for the reply. Time: from sending to the whole reply. Reply: its length in tokens, thinking not counted. In llmwise you pay per message, not per token: each of these replies counted as one message on Pro.
Every reply
Every reply passed: here they are from the cheapest up.
GPT-6 Luna
Passed: Final answer 66: right.
Discounted price: $80 × 0.75 = $60 After 10% sales tax: $60 × 1.10 = $66 Final answer: $66
400 tokens in, 68 out (24 of them reasoning) · 3.1 s · $0.0001 · 1 message on Pro · answered by openai/gpt-6-luna via OpenAI ·
GLM 5.3 Flash
Passed: Final answer 66: right.
Discount: 80 × 0.75 = $60 Tax: 60 × 1.10 = $66 Final answer: $66
416 tokens in, 48 out (15 of them reasoning) · 2.4 s · $0.0001 · 1 message on Pro · answered by z-ai/glm-5.3-flash via AtlasCloud ·
DeepSeek V4 Pro
Passed: Final answer 66: right.
Discounted price: $80 × 0.75 = $60 Sales tax: $60 × 0.10 = $6 Total: $60 + $6 = $66 Final answer: $66
412 tokens in, 125 out (78 of them reasoning) · 2.7 s · $0.0002 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Baidu ·
GLM 5.3
Passed: Final answer 66: right.
Discount: 25% of $80 = $20 → discounted price = $60 Tax: 10% of $60 = $6 Final answer: $66
415 tokens in, 37 out · 0.9 s · $0.0002 · 1 message on Pro · answered by z-ai/glm-5.3 via Baidu ·
DeepSeek V4.1 Flash
Passed: Final answer 66: right.
$80 × 0.75 = $60 (after 25% discount) $60 × 1.10 = $66 (with 10% tax) Final answer: $66
440 tokens in, 64 out (23 of them reasoning) · 0.6 s · $0.0002 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Parasail ·
Gemini 3.8 Flash
Passed: Final answer 66: right.
1. Calculate the discount: $80 \times 0.25 = $20. 2. Calculate the discounted price: $80 - $20 = $60. 3. Calculate the sales tax: $60 \times 0.10 = $6. 4. Calculate the total cost: $60 + $6 = $66. Final answer: $66
430 tokens in, 89 out · 2.5 s · $0.0007 · 1 message on Pro · answered by google/gemini-3.8-flash via Google ·
Claude Haiku 4.5
Passed: Final answer 66: right.
**Working:** 1. Original price: $80 2. Apply 25% discount: $80 × 0.75 = $60 3. Add 10% sales tax: $60 × 1.10 = $66 Final answer: $66
429 tokens in, 63 out · 1.1 s · $0.0007 · 1 message on Pro · answered by anthropic/claude-haiku-4.5 via Amazon Bedrock ·
GPT-6 Sol
Passed: Final answer 66: right.
25% off $80 gives $80 × 0.75 = $60. Adding 10% sales tax gives $60 × 1.10 = $66. Final answer: $66
400 tokens in, 45 out · 1.7 s · $0.0013 · 1 message on Pro · answered by openai/gpt-6-sol via OpenAI ·
Claude Sonnet 5
Passed: Final answer 66: right.
80 × 0.75 = 60 (after discount) 60 × 1.10 = 66 (after tax) Final answer: $66
541 tokens in, 45 out · 1.9 s · $0.0015 · 1 message on Pro · answered by anthropic/claude-sonnet-5 via Claude Platform on AWS ·
Claude Sonnet 5.5
Passed: Final answer 66: right.
- Discount: 25% of $80 = $20, so discounted price = $60 - Tax: 10% of $60 = $6 - Total: $60 + $6 = $66 Final answer: $66
545 tokens in, 65 out · 1.6 s · $0.0017 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
Grok 4.7
Passed: Final answer 66: right.
Discounted price: \(80 \times 0.75 = 60\). With tax: \(60 \times 1.10 = 66\). Final answer: $66
1,634 tokens in, 307 out (267 of them reasoning) · 3.9 s · $0.0027 · 1 message on Pro · answered by x-ai/grok-4.7 via xAI ·
Claude Opus 5.5
Passed: Final answer 66: right.
Discount: 25% of $80 = $20, so the discounted price is $80 − $20 = $60. Tax: 10% of $60 = $6, so the total is $60 + $6 = $66. Final answer: $66
543 tokens in, 74 out · 2.7 s · $0.0037 · 1 message on Pro · answered by anthropic/claude-opus-5.5 via Claude Platform on AWS ·
Kimi K3
Passed: Final answer 66: right.
Discounted price: $80 × 0.75 = $60 Add 10% tax: $60 × 1.10 = $66 Final answer: $66
489 tokens in, 125 out (75 of them reasoning) · 5.0 s · $0.0037 · 1 message on Pro · answered by moonshotai/kimi-k3 via Fireworks ·
Gemini 3.1 Pro
Passed: Final answer 66: right.
Original price: $80 Discount: 25% of $80 = $20 Discounted price: $80 - $20 = $60 Sales tax: 10% of $60 = $6 Final price: $60 + $6 = $66 Final answer: $66
430 tokens in, 275 out (202 of them reasoning) · 3.6 s · $0.0042 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google ·
GPT-6 Astra
Passed: Final answer 66: right.
After the 25% discount: $80 × 0.75 = $60. Adding 10% sales tax: $60 × 1.10 = $66. Final answer: $66
400 tokens in, 46 out · 1.9 s · $0.0063 · 1 message on Pro · answered by openai/gpt-6-astra via OpenAI ·
Claude Fable 5.1
Passed: Final answer 66: right.
Discounted price: $80 × (1 − 0.25) = $80 × 0.75 = $60 Add 10% tax: $60 × 1.10 = $66 Final answer: $66
543 tokens in, 63 out · 3.6 s · $0.0086 · 1 message on Pro · answered by anthropic/claude-fable-5.1 via Anthropic ·
More math prompts
The other math prompts, each with every model's reply, and the results across all five.
Questions
Which AI does best on “A discount, then sales tax”?
All 16 models passed this math prompt's check (final answer). The cheapest reply that passed was GPT-6 Luna's, at $0.000074; the fastest, DeepSeek V4.1 Flash's in 0.6 s. The dearest reply, Claude Fable 5.1's, cost 116 times as much ($0.0086).
What does a reply to “A discount, then sales tax” cost?
Through the models' APIs, what OpenRouter charged us ran from $0.000074 (GPT-6 Luna) to $0.0086 (Claude Fable 5.1) for this prompt. In llmwise you don't pay by the token: a reply like these counts as one message on Pro, whichever model answers.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.
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