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 6 Claude models and all 2 DeepSeek models and published every reply: the results, then Claude Haiku 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 40 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 October 8, 2026, Claude's 6 models passed 27 of 30; Claude Fable 5.1, Claude Opus 5.5 and 2 more 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 Haiku 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 |
| Claude Haiku 5.5Anthropic | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0004 | 3.2 s |
| DeepSeek V4 ProDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 250 a month on Pro | $0.0029 | 4.1 s |
| DeepSeek V4.1 FlashDeepSeek | 5 of 5 | 2 of 2 | 1 each, of 60 a day on Pro | $0.0008 | 1.8 s |
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.
Claude vs DeepSeek, prompt by prompt
Each data analysis prompt with Claude Haiku 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 Haiku 5.5 passed 5 of 5 and DeepSeek V4.1 Flash 5 of 5. DeepSeek V4.1 Flash answered 3.8× sooner at the median, 3.3 s against 0.9 s. Claude Haiku 5.5 cost 2.4× less, $0.0018 against $0.0042 for the 5 replies. Claude Haiku 5.5's replies ran 21% longer, in tokens of reply, thinking not counted.
1. The region with the most revenue
Everyday. Claude: 6 of 6 models passed, Claude Haiku 5.5 the cheapest at $0.0003 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0005. The prompt in full.
Claude Haiku 5.5 and DeepSeek V4.1 Flash both passed this one. DeepSeek V4.1 Flash answered sooner (0.8 s to 3.4 s), and Claude Haiku 5.5's reply cost less ($0.0003 to $0.0005); Claude Haiku 5.5 wrote 105 tokens of reply, DeepSeek V4.1 Flash 130.
Claude Haiku 5.5
Passed: Final answer North, 1085: right.
Revenue = quantity × price, summed by region: - **West:** 90 + 310 + 240 + 225 = **865** - **East:** 120 + 135 + 310 + 360 = **925** - **North:** 180 + 240 + 620 + 45 = **1085** Final answer: North, 1085
816 tokens in, 336 out (231 of them reasoning) · 3.4 s · $0.0003 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer North, 1,085.00: right.
Working: - West: (2×45) + 310 + (2×120) + (5×45) = 90 + 310 + 240 + 225 = **865** - East: 120 + (3×45) + 310 + (3×120) = 120 + 135 + 310 + 360 = **925** - North: (4×45) + (2×120) + (2×310) + 45 = 180 + 240 + 620 + 45 = **1085** Final answer: North, $1,085.00
683 tokens in, 315 out (185 of them reasoning) · 0.8 s · $0.0005 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
2. Average order value in August
Everyday. Claude: 5 of 6 models passed, Claude Haiku 5.5 the cheapest at $0.0002 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0004. The prompt in full.
Claude Haiku 5.5 and DeepSeek V4.1 Flash both passed this one. DeepSeek V4.1 Flash answered sooner (0.9 s to 1.3 s), and Claude Haiku 5.5's reply cost less ($0.0002 to $0.0004); Claude Haiku 5.5 wrote 208 tokens of reply, DeepSeek V4.1 Flash 153.
Claude Haiku 5.5
Passed: Final answer 300.00: right.
August 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 revenue: 240 + 310 + 620 + 225 + 360 + 45 = 1,800.00 Number of orders: 6 Average: 1,800.00 / 6 = 300.00 Final answer: 300.00
824 tokens in, 208 out · 1.3 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-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 = 1800.00 across 6 orders → 1800 / 6 = 300.00 Final answer: 300.00
690 tokens in, 264 out (111 of them reasoning) · 0.9 s · $0.0004 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
3. Revenue change from July to August
Everyday. Claude: 6 of 6 models passed, Claude Haiku 5.5 the cheapest at $0.0004 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0007. The prompt in full.
Claude Haiku 5.5 and DeepSeek V4.1 Flash both passed this one. DeepSeek V4.1 Flash answered sooner (1.1 s to 3.3 s), and Claude Haiku 5.5's reply cost less ($0.0004 to $0.0007); Claude Haiku 5.5 wrote 298 tokens of reply, DeepSeek V4.1 Flash 231.
Claude Haiku 5.5
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, or 67.4%. Final answer: 67.4%
832 tokens in, 575 out (277 of them reasoning) · 3.3 s · $0.0004 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 67.4%: right.
**July 2026** - 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 = **1,075.00** **August 2026** - 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 = **1,800.00** Change = (1800 − 1075) / 1075 × 100 = 725 / 1075 × 100 ≈ 67.4% Final answer: 67.4%
695 tokens in, 465 out (234 of them reasoning) · 1.1 s · $0.0007 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
4. A median, filtered two ways
Hard. Claude: 6 of 6 models passed, Claude Haiku 5.5 the cheapest at $0.0002 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0003. The prompt in full.
Claude Haiku 5.5 and DeepSeek V4.1 Flash both passed this one. DeepSeek V4.1 Flash answered sooner (0.6 s to 2.6 s), and Claude Haiku 5.5's reply cost less ($0.0002 to $0.0003); Claude Haiku 5.5 wrote 126 tokens of reply, DeepSeek V4.1 Flash 103.
Claude Haiku 5.5
Passed: Final answer 6.25: right.
Billing tickets with high priority: - T1: 5.5 - T4: 2 - T6: 9 - T9: 7 - T10: 26 - T12: 4 Sorted: 2, 4, 5.5, 7, 9, 26 With six values, the median is the average of the middle two: (5.5 + 7) / 2 = 6.25 Final answer: 6.25
692 tokens in, 240 out (114 of them reasoning) · 2.6 s · $0.0002 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 6.25: right.
Billing + high tickets: T1=5.5, T4=2, T6=9, T9=7, T10=26, T12=4 → 6 values. Sorted: 2, 4, 5.5, 7, 9, 26 Even count, so median = average of the two middle values: (5.5 + 7) / 2 = 6.25 Final answer: 6.25
554 tokens in, 182 out (79 of them reasoning) · 0.6 s · $0.0003 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
5. Correlation between ad spend and sign-ups
Hard. Claude: 4 of 6 models passed, Claude Haiku 5.5 the cheapest at $0.0007 · DeepSeek: 2 of 2 models passed, DeepSeek V4.1 Flash the cheapest at $0.0023. The prompt in full.
Claude Haiku 5.5 and DeepSeek V4.1 Flash both passed this one. They took about as long (Claude Haiku 5.5 5.7 s, DeepSeek V4.1 Flash 5.8 s), and Claude Haiku 5.5's reply cost less ($0.0007 to $0.0023); Claude Haiku 5.5 wrote 223 tokens of reply, DeepSeek V4.1 Flash 174.
Claude Haiku 5.5
Passed: Final answer 0.97: right.
**Working:** - n = 8 - Mean ad_spend = 6150 / 8 = 768.75 - Mean signups = 434 / 8 = 54.25 - Sum of cross-deviations (Σ(x−x̄)(y−ȳ)) = 23,912.5 - Sum of squared x-deviations (Σ(x−x̄)²) = 624,687.5 - Sum of squared y-deviations (Σ(y−ȳ)²) = 971.5 r = 23,912.5 / √(624,687.5 × 971.5) ≈ 23,912.5 / 24,635.9 ≈ 0.971 Final answer: 0.97
608 tokens in, 1,298 out (1,075 of them reasoning) · 5.7 s · $0.0007 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·
DeepSeek V4.1 Flash
Passed: Final answer 0.97: right.
Using the computational formula: - n = 8, Σx = 6150, Σy = 434 - Σxy = 357,550, Σx² = 5,352,500, Σy² = 24,516 Numerator: 8(357,550) − (6150)(434) = 2,860,400 − 2,669,100 = 191,300 Denominator: √[(8·5,352,500 − 6150²)(8·24,516 − 434²)] = √[(4,997,500)(7,772)] = √38,840,570,000 ≈ 197,079 r = 191,300 / 197,079 ≈ 0.9707 Final answer: 0.97
492 tokens in, 1,841 out (1,667 of them reasoning) · 5.8 s · $0.0023 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
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 1.2× sooner at the median and cost 9.9× less.
Claude Fable 5.1 vs DeepSeek V4.1 Flash: 5 of 5 each; DeepSeek V4.1 Flash answered 5.6× sooner at the median and cost 33.4× less.
Claude Opus 5.5 vs DeepSeek V4 Pro: 5 of 5 each; DeepSeek V4 Pro answered 1.1× sooner at the median and cost 4.6× 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 5.3× sooner at the median and cost 15.4× less.
Claude Sonnet 5.5 vs DeepSeek V4 Pro: 5 of 5 each; Claude Sonnet 5.5 answered 1.8× sooner at the median and DeepSeek V4 Pro cost 1.6× less.
Claude Sonnet 5.5 vs DeepSeek V4.1 Flash: 5 of 5 each; DeepSeek V4.1 Flash answered 2.6× sooner at the median and cost 5.6× less.
Claude Sonnet 5 vs DeepSeek V4 Pro: Claude Sonnet 5 4 of 5, DeepSeek V4 Pro 5; DeepSeek V4 Pro answered 1.3× sooner at the median and cost 2.4× 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 6.1× sooner at the median and cost 8.1× less.
Claude Haiku 4.5 vs DeepSeek V4 Pro: Claude Haiku 4.5 3 of 5, DeepSeek V4 Pro 5; Claude Haiku 4.5 answered 1.5× sooner at the median and cost 1.1× 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; DeepSeek V4.1 Flash answered 3.2× sooner at the median and cost 2.9× less. Claude Haiku 4.5 vs DeepSeek V4.1 Flash, on every job.
Claude Haiku 5.5 vs DeepSeek V4 Pro: 5 of 5 each; Claude Haiku 5.5 answered 1.2× sooner at the median and cost 8.0× less.
Claude Haiku 5.5 vs DeepSeek V4.1 Flash: 5 of 5 each; DeepSeek V4.1 Flash answered 3.8× sooner at the median and Claude Haiku 5.5 cost 2.4× less. Claude Haiku 5.5 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: 6 models, Claude Fable 5.1, Claude Opus 5.5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 4.5, and Claude Haiku 5.5. DeepSeek: 2 models, DeepSeek V4 Pro and DeepSeek V4.1 Flash.
Price per message
The least expensive Claude model is Claude Haiku 5.5 (60 messages a day 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 Haiku 5.5. Paid plans have them, with messages every month: Claude Fable 5.1 from Pro up.
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 October 8, 2026, Claude's 6 models passed 27 of 30; Claude Fable 5.1, Claude Opus 5.5 and 2 more 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 Haiku 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 5.5 (60 messages a day on Pro), and the least expensive DeepSeek model is DeepSeek V4.1 Flash (60 messages a day on Pro). At API list prices (October 2026), a typical message of 4,000 tokens in and 700 out costs $0.0008 on Claude Haiku 5.5 and $0.0020 on DeepSeek V4.1 Flash.
Can I use Claude and DeepSeek in the same chat?
Yes. Ask Claude Haiku 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 Haiku 5.5's answer included.
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.