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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. Updated .

Short answer

In our test runs on October 8, 2026, DeepSeek V4 Pro passed 5 of 5 of our math prompts (both hard ones): tied 1st of 20 models. Each reply counted as 1 message on Pro, where it has 250 a month, and cost $0.0009 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.$0.00051.8 s
Pens at 3 for $4EverydayPassed: Final answer 3 packs of 3 pens plus 1 single pen, costing 13.50: right.$0.00102.7 s
Compound interest over three yearsEverydayPassed: Final answer 315.25: right.$0.00083.4 s
Four-digit numbers whose digits sum to 9HardPassed: Final answer 165: right.$0.00124.0 s
The highest of three dice is a 5HardPassed: Final answer 61/216: right.$0.00092.5 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.

    $80 × (1 − 0.25) = $60  
$60 × 1.10 = $66

Final answer: $66

    412 tokens in, 84 out (52 of them reasoning) · 1.8 s · $0.0005 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·

  2. Pens at 3 for $4

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

    Passed: Final answer 3 packs of 3 pens plus 1 single pen, costing 13.50: right.

    Buy packs of 3 where possible.

- 3 packs = 9 pens: 3 × $4 = $12  
- 1 single pen: $1.50  
- Total: $12 + $1.50 = $13.50  

Other combinations cost more, so this is cheapest.

Final answer: 3 packs of 3 pens plus 1 single pen, costing $13.50

    414 tokens in, 232 out (147 of them reasoning) · 2.7 s · $0.0010 · 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.

    Year 1: $2,000 × 1.05 = $2,100  
Year 2: $2,100 × 1.05 = $2,205  
Year 3: $2,205 × 1.05 = $2,315.25

Interest earned = $2,315.25 − $2,000 = $315.25

Final answer: $315.25

    413 tokens in, 161 out (74 of them reasoning) · 3.4 s · $0.0008 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·

  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 digits be \(a,b,c,d\), where \(a \ge 1\) and the others are nonnegative. 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, 269 out (160 of them reasoning) · 4.0 s · $0.0012 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·

  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.

    Total outcomes: \(6^3 = 216\).

Highest exactly 5 means all dice are at most 5, but not all at most 4:
\[
5^3 - 4^3 = 125 - 64 = 61
\]

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

Final answer: 61/216

    405 tokens in, 199 out (127 of them reasoning) · 2.5 s · $0.0009 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·

How it compares on math

DeepSeek V4 Pro beside the job's picks among every model. 19 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
Claude Haiku 5.5Our pick: hard problems (shared), everyday5 of 560 a day on Pro$0.0001
DeepSeek V4 ProOur pick: hard problems (shared)5 of 5250 a month on Pro$0.0009
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: Plus $3.75, 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.

DeepSeek V4 Pro next to each model on math

DeepSeek V4 Pro against each model on the same 5 math prompts. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.

  • Against Claude Fable 5.1: DeepSeek V4 Pro answered 1.7× sooner (2.7 s to 4.6 s), cost 13.3× less, and passed 5 of 5 to its 5.

  • Against Claude Opus 5.5: DeepSeek V4 Pro answered 1.4× sooner (2.7 s to 3.9 s), cost 6.8× less, and passed 5 of 5 to its 5.

  • Against Claude Sonnet 5.5: DeepSeek V4 Pro answered 1.6× later (2.7 s to 1.7 s), cost 2.8× less, and passed 5 of 5 to its 5.

  • Against Claude Sonnet 5: DeepSeek V4 Pro answered 1.5× sooner (2.7 s to 3.9 s), cost 3.8× less, and passed 5 of 5 to its 5.

  • Against Claude Haiku 5.5: DeepSeek V4 Pro answered 1.6× later (2.7 s to 1.7 s), cost 6.0× more, and passed 5 of 5 to its 5.

  • Against Claude Haiku 4.5: DeepSeek V4 Pro answered 1.2× later (2.7 s to 2.2 s), cost 1.8× less, and passed 5 of 5 to its 5.

  • Against GPT-6 Astra: DeepSeek V4 Pro answered within 10% of its time (2.7 s to 2.6 s), cost 9.7× less, and passed 5 of 5 to its 5.

  • Against GPT-6.1 Sol: DeepSeek V4 Pro answered 1.5× later (2.7 s to 1.8 s), cost within 10% of it, and passed 5 of 5 to its 5.

  • Against GPT-6 Sol: DeepSeek V4 Pro answered 1.2× later (2.7 s to 2.2 s), cost 2.1× less, and passed 5 of 5 to its 5.

  • Against GPT-6 Luna: DeepSeek V4 Pro answered 1.2× later (2.7 s to 2.2 s), cost 8.9× more, and passed 5 of 5 to its 4. Only DeepSeek V4 Pro passed Pens at 3 for $4.

  • Against Gemini 4 Argon: DeepSeek V4 Pro answered 1.6× sooner (2.7 s to 4.4 s), cost 1.8× less, and passed 5 of 5 to its 5.

  • Against Gemini 3.1 Pro (preview): DeepSeek V4 Pro answered 3.1× sooner (2.7 s to 8.3 s), cost 11.4× less, and passed 5 of 5 to its 5.

  • Against Gemini 3.8 Flash: DeepSeek V4 Pro answered 1.7× sooner (2.7 s to 4.7 s), cost 1.6× less, and passed 5 of 5 to its 5.

  • Against DeepSeek V4.1 Flash: DeepSeek V4 Pro answered 2.9× later (2.7 s to 0.9 s), cost 3.5× more, and passed 5 of 5 to its 5.

  • Against Grok 4.7: DeepSeek V4 Pro answered 4.3× sooner (2.7 s to 11.7 s), cost 8.2× less, and passed 5 of 5 to its 5.

  • Against Kimi K3: DeepSeek V4 Pro answered 2.0× sooner (2.7 s to 5.4 s), cost 4.3× less, and passed 5 of 5 to its 5.

  • Against GLM 5.3: DeepSeek V4 Pro answered 2.9× later (2.7 s to 0.9 s), cost 2.5× more, and passed 5 of 5 to its 5.

  • Against GLM 5.3 Flash: DeepSeek V4 Pro answered within 10% of its time (2.7 s to 2.7 s), cost 5.8× more, and passed 5 of 5 to its 5.

  • Against Mistral Large 4: DeepSeek V4 Pro answered 1.9× sooner (2.7 s to 5.1 s), cost 2.1× less, and passed 5 of 5 to its 5.

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 20 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, GLM, and Mistral, 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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