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DeepSeek V4 Pro · Math

DeepSeek V4 Pro for math: our test runs

DeepSeek V4 Pro ran our 5 math prompts in llmwise, through the same pipeline your messages take. Here's every reply as it came, whether it passed, what it cost and what it counts as on Pro, next to the other models.

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Based on 5 of our test runs on , through OpenRouter with the app's own prompt and settings.

Short answer

In our test runs on September 27, 2026, DeepSeek V4 Pro passed 5 of 5 of our math prompts (both hard ones): tied 1st of 15 models. Each reply counted as 1 message on Pro, where it has 250 a month, and cost $0.0007 to run on average.

Prompt by prompt

Each of the 5 math prompts, and how DeepSeek V4 Pro's reply did.

DeepSeek V4 Pro on each math prompt
PromptResultCostTime
A discount, then sales taxEverydayPassed: Final answer 66: right.$0.00022.7 s
Pens at 3 for $4EverydayPassed: Final answer Buy three 3-for- 4 bundles and one single pen; total 13.50.: right.$0.00162.6 s
Compound interest over three yearsEverydayPassed: Final answer 315.25: right.$0.00041.5 s
Four-digit numbers whose digits sum to 9HardPassed: Final answer 165: right.$0.00063.2 s
The highest of three dice is a 5HardPassed: Final answer 61/216: right.$0.00063.5 s

Every math reply from DeepSeek V4 Pro

  1. A discount, then sales tax

    An everyday prompt: “A discount, then sales tax”, in full.

    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 ·

  2. Pens at 3 for $4

    An everyday prompt: “Pens at 3 for $4”, in full.

    Passed: Final answer Buy three 3-for- 4 bundles and one single pen; total 13.50.: right.

    Buy in 3-for-$4 bundles where possible:
- 10 pens = 3 bundles (9 pens) + 1 single pen
- 3 × $4 = $12, plus $1.50 = $13.50

Final answer: Buy three 3-for-$4 bundles and one single pen; total $13.50.

    414 tokens in, 414 out (341 of them reasoning) · 2.6 s · $0.0016 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·

  3. Compound interest over three years

    An everyday prompt: “Compound interest over three years”, in full.

    Passed: Final answer 315.25: right.

    Amount after 3 years = $2,000 × (1.05)^3 = $2,000 × 1.157625 = $2,315.25  
Interest earned = $2,315.25 − $2,000 = $315.25

Final answer: $315.25

    413 tokens in, 148 out (84 of them reasoning) · 1.5 s · $0.0004 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Ionstream ·

  4. Four-digit numbers whose digits sum to 9

    A hard prompt: “Four-digit numbers whose digits sum to 9”, in full.

    Passed: Final answer 165: right.

    Let the four-digit number be \(abcd\), with \(a \in \{1,\dots,9\}\) and \(b,c,d \in \{0,\dots,9\}\).

We need
\[
a+b+c+d=9.
\]
Set \(a'=a-1\), so \(a'\ge 0\). Then
\[
a'+b+c+d=8.
\]
The number of nonnegative integer solutions is
\[
\binom{8+4-1}{4-1}=\binom{11}{3}=165.
\]

Final answer: 165

    389 tokens in, 218 out (98 of them reasoning) · 3.2 s · $0.0006 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Alibaba ·

  5. The highest of three dice is a 5

    A hard prompt: “The highest of three dice is a 5”, in full.

    Passed: Final answer 61/216: right.

    The highest die is exactly 5 means:

- All three dice show 5 or less: \(5^3 = 125\) outcomes
- Subtract outcomes where all dice show 4 or less: \(4^3 = 64\)

So favorable outcomes:

\[
125 - 64 = 61
\]

Total outcomes:

\[
6^3 = 216
\]

Probability:

\[
\frac{61}{216}
\]

Final answer: 61/216

    405 tokens in, 213 out (117 of them reasoning) · 3.5 s · $0.0006 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Alibaba ·

How it compares on math

DeepSeek V4 Pro beside the job's picks among every model. 14 models share the hard-problems pick, DeepSeek V4 Pro among them.

DeepSeek V4 Pro beside other models on math
ModelPassedOn ProCost per reply
GLM 5.3Our pick: hard problems (shared), best value5 of 5250 a month on Pro$0.0004
GLM 5.3 FlashOur pick: hard problems (shared), everyday5 of 560 a day on Pro$0.0002
DeepSeek V4 ProOur pick: hard problems (shared)5 of 5250 a month on Pro$0.0007
On Pro: Pro's count on each model. Cost: what OpenRouter charged us per reply, on average.

Every limit is published. Paid plans also have a monthly fair-use limit on AI cost: Pro $7.50, Max $20, Ultra $42, Studio $85. Using every message on your plan at typical sizes stays under it; very large messages and heavy research use it faster. Every limit, explained.

How these runs were done

Final answer. Automatic. The reply's last “Final answer:” line must hold the right value.

How the runs were done, and every math prompt.

DeepSeek V4 Pro, and math, elsewhere

Questions

Is DeepSeek V4 Pro good for math?

In our test runs it passed 5 of 5 math prompts, tied 1st of the 15 models in llmwise. Every reply is on this page, so you can judge them yourself.

How many of my messages does a math reply from DeepSeek V4 Pro use?

1 message each on Pro, where it has 250 a month on Pro. The price of a message is fixed and shown before you send it, however long the reply.

How were these runs done?

The same way for every model: each prompt sent through llmwise's own pipeline, each reply checked the same way. The methods page has every prompt and how each is scored.

Claude, GPT, Gemini, DeepSeek, Grok, Kimi, and GLM, in one chat.

See what a message costs before you send it. Free is 5 messages to try; sign in with an email link, no password or card.

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