Comparison · Data analysis
Claude vs DeepSeek for data analysis
On llmwise Pro, Claude Sonnet 5.5 gets up to 125 messages a month and DeepSeek V4 Pro up to 250 messages a month. We ran the same 5 data analysis prompts on all 5 Claude models and all 2 DeepSeek models and published every reply: the results, then Claude Sonnet 5.5 against DeepSeek V4.1 Flash prompt by prompt, then how Claude and DeepSeek compare on price per message, context and files.
Based on 35 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
Short answer
In our data analysis test runs on September 28, 2026, Claude's 5 models passed 22 of 25; Claude Fable 5.1, Claude Opus 5.5, and Claude Sonnet 5.5 each passed 5 of 5. DeepSeek's 2 models passed 10 of 10; DeepSeek V4 Pro and DeepSeek V4.1 Flash each passed 5 of 5. Claude Sonnet 5.5 and DeepSeek V4.1 Flash each passed 5 of the 5 prompts, so these data analysis prompts don't split Claude and DeepSeek; the replies on this page show how they differ.
Claude and DeepSeek on our data analysis test runs
Every Claude and DeepSeek model in llmwise on our 5 data analysis prompts: how many replies passed, what each counted as on Pro, and what it cost to run.
| Model | Passed | Hard ones | Messages used on Pro | Cost per reply | Time per reply |
|---|---|---|---|---|---|
| Claude Fable 5.1Anthropic | 5 of 5 | 2 of 2 | 1 each, of 31 a month on Pro | $0.0283 | 6.7 s |
| Claude Opus 5.5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 62 a month on Pro | $0.0131 | 5.9 s |
| Claude Sonnet 5.5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 125 a month on Pro | $0.0047 | 2.4 s |
| Claude Sonnet 5Anthropic | 4 of 5 | 1 of 2 | 1 each, of 125 a month on Pro | $0.0069 | 6.9 s |
| Claude Haiku 4.5Anthropic | 3 of 5 | 1 of 2 | 1 each, of 250 a month on Pro | $0.0025 | 3.2 s |
| DeepSeek V4 ProDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 250 a month on Pro | $0.0016 | 10.1 s |
| DeepSeek V4.1 FlashDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0005 | 4.3 s |
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.
Claude vs DeepSeek, prompt by prompt
Each data analysis prompt with Claude Sonnet 5.5 and DeepSeek V4.1 Flash side by side, as they replied: for each side, the model that passed the most data analysis prompts (then the most hard ones, then the cheaper).
Data analysis: Claude Sonnet 5.5 passed 5 of 5 and DeepSeek V4.1 Flash 5 of 5. Claude Sonnet 5.5 answered 1.3× sooner at the median, 2.3 s against 3.0 s. DeepSeek V4.1 Flash cost 9.2× less, $0.0235 against $0.0026 for the 5 replies. Claude Sonnet 5.5's replies ran 54% longer, in tokens of reply, thinking not counted.
1. The region with the most revenue
Everyday. Claude: 5 of 5 models passed, Claude Haiku 4.5 the cheapest at $0.0026 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0004. The prompt in full.
Claude Sonnet 5.5 and DeepSeek V4.1 Flash both passed this one. Claude Sonnet 5.5 answered sooner (2.4 s to 3.0 s), and DeepSeek V4.1 Flash's reply cost less ($0.0004 to $0.0051); Claude Sonnet 5.5 wrote 307 tokens of reply, DeepSeek V4.1 Flash 93.
Claude Sonnet 5.5
Passed: Final answer North, with 1,085.00 in revenue: right.
Revenue per order (quantity × price): - 1001 West: 2×45 = 90 - 1002 East: 1×120 = 120 - 1003 West: 1×310 = 310 - 1004 North: 4×45 = 180 - 1005 East: 3×45 = 135 - 1006 North: 2×120 = 240 - 1007 West: 2×120 = 240 - 1008 East: 1×310 = 310 - 1009 North: 2×310 = 620 - 1010 West: 5×45 = 225 - 1011 East: 3×120 = 360 - 1012 North: 1×45 = 45 Totals by region: - West: 90 + 310 + 240 + 225 = 865 - East: 120 + 135 + 310 + 360 = 925 - North: 180 + 240 + 620 + 45 = 1085 North is highest. Final answer: North, with $1,085.00 in revenue
817 tokens in, 307 out · 2.4 s · $0.0051 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer North, with 1,085.00 in revenue.: right.
**Working (revenue = quantity × price, summed by region):** - **West:** 90 + 310 + 240 + 225 = **865** - **East:** 120 + 135 + 310 + 360 = **925** - **North:** 180 + 240 + 620 + 45 = **1085** North leads. Final answer: North, with 1,085.00 in revenue.
683 tokens in, 196 out (103 of them reasoning) · 3.0 s · $0.0004 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Parasail ·
2. Average order value in August
Everyday. Claude: 4 of 5 models passed, Claude Sonnet 5.5 the cheapest at $0.0037 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0003. The prompt in full.
Claude Sonnet 5.5 and DeepSeek V4.1 Flash both passed this one. Claude Sonnet 5.5 answered sooner (1.7 s to 2.0 s), and DeepSeek V4.1 Flash's reply cost less ($0.0003 to $0.0037); Claude Sonnet 5.5 wrote 170 tokens of reply, DeepSeek V4.1 Flash 156.
Claude Sonnet 5.5
Passed: Final answer 300.00: right.
August 2026 orders (1007–1012): - 1007: 2 × 120 = 240 - 1008: 1 × 310 = 310 - 1009: 2 × 310 = 620 - 1010: 5 × 45 = 225 - 1011: 3 × 120 = 360 - 1012: 1 × 45 = 45 Total = 240 + 310 + 620 + 225 + 360 + 45 = 1800 Average = 1800 / 6 = 300.00 Final answer: 300.00
825 tokens in, 170 out · 1.7 s · $0.0037 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 300.00: right.
August 2026 orders (1007–1012): - 1007: 2 × 120.00 = 240.00 - 1008: 1 × 310.00 = 310.00 - 1009: 2 × 310.00 = 620.00 - 1010: 5 × 45.00 = 225.00 - 1011: 3 × 120.00 = 360.00 - 1012: 1 × 45.00 = 45.00 Total = 1,800.00 across 6 orders → 1,800.00 / 6 = 300.00 Final answer: 300.00
690 tokens in, 267 out (111 of them reasoning) · 2.0 s · $0.0003 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via StreamLake ·
3. Revenue change from July to August
Everyday. Claude: 5 of 5 models passed, Claude Haiku 4.5 the cheapest at $0.0022 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0003. The prompt in full.
Claude Sonnet 5.5 and DeepSeek V4.1 Flash both passed this one. Claude Sonnet 5.5 answered sooner (2.3 s to 10.2 s), and DeepSeek V4.1 Flash's reply cost less ($0.0003 to $0.0048); Claude Sonnet 5.5 wrote 273 tokens of reply, DeepSeek V4.1 Flash 357.
Claude Sonnet 5.5
Passed: Final answer 67.4%: right.
**July:** - 1001: 2 × 45 = 90 - 1002: 1 × 120 = 120 - 1003: 1 × 310 = 310 - 1004: 4 × 45 = 180 - 1005: 3 × 45 = 135 - 1006: 2 × 120 = 240 July total = 1075 **August:** - 1007: 2 × 120 = 240 - 1008: 1 × 310 = 310 - 1009: 2 × 310 = 620 - 1010: 5 × 45 = 225 - 1011: 3 × 120 = 360 - 1012: 1 × 45 = 45 August total = 1800 **Change:** (1800 − 1075) / 1075 = 725 / 1075 ≈ 0.67442 → 67.4% Final answer: 67.4%
833 tokens in, 273 out · 2.3 s · $0.0048 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer +67.4%: right.
**July 2026 revenue:** - 1001: 2×45 = 90 - 1002: 1×120 = 120 - 1003: 1×310 = 310 - 1004: 4×45 = 180 - 1005: 3×45 = 135 - 1006: 2×120 = 240 - **Total = 1,075** **August 2026 revenue:** - 1007: 2×120 = 240 - 1008: 1×310 = 310 - 1009: 2×310 = 620 - 1010: 5×45 = 225 - 1011: 3×120 = 360 - 1012: 1×45 = 45 - **Total = 1,800** **Change:** (1,800 − 1,075) / 1,075 = 725 / 1,075 ≈ 0.6744 → +67.4% Final answer: +67.4%
695 tokens in, 456 out (99 of them reasoning) · 10.2 s · $0.0003 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Relace ·
4. A median, filtered two ways
Hard. Claude: 5 of 5 models passed, Claude Haiku 4.5 the cheapest at $0.0016 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0002. The prompt in full.
Claude Sonnet 5.5 and DeepSeek V4.1 Flash both passed this one. They took about as long (Claude Sonnet 5.5 1.5 s, DeepSeek V4.1 Flash 1.6 s), and DeepSeek V4.1 Flash's reply cost less ($0.0002 to $0.0030); Claude Sonnet 5.5 wrote 127 tokens of reply, DeepSeek V4.1 Flash 107.
Claude Sonnet 5.5
Passed: Final answer 6.25 hours: right.
Billing + high tickets: T1 (5.5), T4 (2), T6 (9), T9 (7), T10 (26), T12 (4). Sorted: 2, 4, 5.5, 7, 9, 26 Six values, so the median is the average of the 3rd and 4th: (5.5 + 7) / 2 = 6.25 Final answer: 6.25 hours
693 tokens in, 127 out · 1.5 s · $0.0030 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 6.25: right.
**Filter:** team = Billing AND priority = high | ticket | hours | |---|---| | T4 | 2 | | T12 | 4 | | T1 | 5.5 | | T9 | 7 | | T6 | 9 | | T10 | 26 | That's 6 values; median = mean of the 3rd and 4th = (5.5 + 7) / 2 = **6.25** Final answer: 6.25
554 tokens in, 209 out (102 of them reasoning) · 1.6 s · $0.0002 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Novita ·
5. Correlation between ad spend and sign-ups
Hard. Claude: 3 of 5 models passed, Claude Sonnet 5.5 the cheapest at $0.0070 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0013. The prompt in full.
Claude Sonnet 5.5 and DeepSeek V4.1 Flash both passed this one. Claude Sonnet 5.5 answered sooner (4.2 s to 4.8 s), and DeepSeek V4.1 Flash's reply cost less ($0.0013 to $0.0070); Claude Sonnet 5.5 wrote 547 tokens of reply, DeepSeek V4.1 Flash 213.
Claude Sonnet 5.5
Passed: Final answer 0.97: right.
Data: x = ad_spend, y = signups (n = 8) Sums: - Σx = 500+800+650+1200+900+300+1100+700 = 6150 → mean x = 768.75 - Σy = 42+55+49+71+60+35+64+58 = 434 → mean y = 54.25 Deviations (dx, dy), products: - 500: dx=-268.75, dy=-12.25 → dxdy=3292.19; dx²=72226.56; dy²=150.06 - 800: dx=31.25, dy=0.75 → 23.44; 976.56; 0.56 - 650: dx=-118.75, dy=-5.25 → 623.44; 14101.56; 27.56 - 1200: dx=431.25, dy=16.75 → 7223.44; 185976.56; 280.56 - 900: dx=131.25, dy=5.75 → 754.69; 17226.56; 33.06 - 300: dx=-468.75, dy=-19.25 → 9023.44; 219726.56; 370.56 - 1100: dx=331.25, dy=9.75 → 3229.69; 109726.56; 95.06 - 700: dx=-68.75, dy=3.75 → -257.81; 4726.56; 14.06 Totals: - Sxy ≈ 23,912.5 - Sxx ≈ 624,687.5 - Syy ≈ 971.5 r = 23,912.5 / √(624,687.5 × 971.5) = 23,912.5 / √606,884,000 ≈ 23,912.5 / 24,635.4 ≈ 0.97 Final answer: 0.97
609 tokens in, 547 out · 4.2 s · $0.0070 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 0.97: right.
**Working** n = 8, Σx = 6150, Σy = 434, Σxy = 357,550, Σx² = 5,352,500, Σy² = 24,516 Numerator: n·Σxy − Σx·Σy = 8(357,550) − 6150(434) = 2,860,400 − 2,669,100 = 191,300 Denominator: - n·Σx² − (Σx)² = 42,820,000 − 37,822,500 = 4,997,500 - n·Σy² − (Σy)² = 196,128 − 188,356 = 7,772 - √(4,997,500 × 7,772) ≈ 197,080.1 r = 191,300 / 197,080.1 ≈ 0.9707 Final answer: 0.97
492 tokens in, 1,515 out (1,302 of them reasoning) · 4.8 s · $0.0013 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Novita ·
Each Claude model against each DeepSeek model
Every Claude model against every DeepSeek model on the same 5 data analysis prompts: passes, the median wait and what the replies cost. A lead under 10% counts as close.
Claude Fable 5.1 vs DeepSeek V4 Pro: 5 of 5 each; DeepSeek V4 Pro answered 2.0× sooner at the median and cost 17.4× less.
Claude Fable 5.1 vs DeepSeek V4.1 Flash: 5 of 5 each; DeepSeek V4.1 Flash answered 1.6× sooner at the median and cost 55.2× less.
Claude Opus 5.5 vs DeepSeek V4 Pro: 5 of 5 each; DeepSeek V4 Pro answered 1.8× sooner at the median and cost 8.0× less. Claude Opus 5.5 vs DeepSeek V4 Pro, on every job.
Claude Opus 5.5 vs DeepSeek V4.1 Flash: 5 of 5 each; DeepSeek V4.1 Flash answered 1.5× sooner at the median and cost 25.5× less.
Claude Sonnet 5.5 vs DeepSeek V4 Pro: 5 of 5 each; they took about as long and DeepSeek V4 Pro cost 2.9× less.
Claude Sonnet 5.5 vs DeepSeek V4.1 Flash: 5 of 5 each; Claude Sonnet 5.5 answered 1.3× sooner at the median and DeepSeek V4.1 Flash cost 9.2× less.
Claude Sonnet 5 vs DeepSeek V4 Pro: Claude Sonnet 5 4 of 5, DeepSeek V4 Pro 5; DeepSeek V4 Pro answered 2.1× sooner at the median and cost 4.2× less. Claude Sonnet 5 vs DeepSeek V4 Pro, on every job.
Claude Sonnet 5 vs DeepSeek V4.1 Flash: Claude Sonnet 5 4 of 5, DeepSeek V4.1 Flash 5; DeepSeek V4.1 Flash answered 1.8× sooner at the median and cost 13.4× less.
Claude Haiku 4.5 vs DeepSeek V4 Pro: Claude Haiku 4.5 3 of 5, DeepSeek V4 Pro 5; they took about as long and DeepSeek V4 Pro cost 1.5× less. Claude Haiku 4.5 vs DeepSeek V4 Pro, on every job.
Claude Haiku 4.5 vs DeepSeek V4.1 Flash: Claude Haiku 4.5 3 of 5, DeepSeek V4.1 Flash 5; they took about as long and DeepSeek V4.1 Flash cost 4.9× less. Claude Haiku 4.5 vs DeepSeek V4.1 Flash, on every job.
How the data analysis replies are scored
Every Claude and DeepSeek reply above was checked the same way as every other model's, by the rules published with the prompts: how the data analysis prompts are scored, and each one in full.
The differences at a glance
What follows from each model's facts in our catalog.
The lineups
Claude: 5 models, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, Claude Sonnet 5, and Claude Haiku 4.5. DeepSeek: 2 models, DeepSeek V4 Pro and DeepSeek V4.1 Flash.
Price per message
The least expensive Claude model is Claude Haiku 4.5 (250 messages a month on Pro); the least expensive DeepSeek model is DeepSeek V4.1 Flash (60 messages a day on Pro).
Context window
Claude goes up to 1M tokens (Claude Fable 5.1); DeepSeek up to 1.05M tokens (DeepSeek V4 Pro).
Images and PDFs
DeepSeek V4 Pro doesn't read images. DeepSeek V4 Pro and DeepSeek V4.1 Flash get a PDF's text rather than the file itself.
On the Free plan
Free's one-time trial of 5 messages covers Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 4.5, DeepSeek V4 Pro, and DeepSeek V4.1 Flash. Paid plans have every model, with messages every month.
Every Claude and DeepSeek model's context window, files and API price: DeepSeek vs Claude.
Where your messages go
In llmwise, a message to Claude goes to its maker, Anthropic, or through OpenRouter when llmwise can't reach the maker directly. DeepSeek models are served only through OpenRouter, by endpoints that don't store or train on prompts. The Privacy Policy has the details.
Questions
Which is better, Claude or DeepSeek for data analysis?
In our data analysis test runs on September 28, 2026, Claude's 5 models passed 22 of 25; Claude Fable 5.1, Claude Opus 5.5, and Claude Sonnet 5.5 each passed 5 of 5. DeepSeek's 2 models passed 10 of 10; DeepSeek V4 Pro and DeepSeek V4.1 Flash each passed 5 of 5. Claude Sonnet 5.5 and DeepSeek V4.1 Flash each passed 5 of the 5 prompts, so these data analysis prompts don't split Claude and DeepSeek; the replies on this page show how they differ.
Is Claude or DeepSeek cheaper?
In llmwise, the least expensive Claude model is Claude Haiku 4.5 (250 messages a month on Pro), and the least expensive DeepSeek model is DeepSeek V4.1 Flash (60 messages a day on Pro). At API list prices (September 2026), a typical message of 4,000 tokens in and 700 out costs $0.0075 on Claude Haiku 4.5 and $0.0011 on DeepSeek V4.1 Flash.
Can I use Claude and DeepSeek in the same chat?
Yes. Ask Claude Sonnet 5.5 a question, then switch the picker to DeepSeek V4.1 Flash and ask again: DeepSeek V4.1 Flash sees the whole conversation, Claude Sonnet 5.5's answer included.
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.