Model vs model
Claude Sonnet 5 vs DeepSeek V4 Pro
Claude Sonnet 5 and DeepSeek V4 Pro are both in llmwise. What each gets on every plan, what it reads, how it's served and what happens when its provider fails, from the catalog and the code that runs them.
Model prices and specs checked against OpenRouter's Claude Sonnet 5 page, OpenRouter's DeepSeek V4 Pro page. Updated .
Short answer
DeepSeek V4 Pro gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Claude Sonnet 5. Otherwise, only Claude Sonnet 5 reads images and only Claude Sonnet 5 reads a PDF as the whole file. In our test runs, Claude Sonnet 5 passed 46 of the 50 prompts both answered and DeepSeek V4 Pro 45; 7 prompts split them, most on coding (5 to 4).
Claude Sonnet 5 vs DeepSeek V4 Pro, prompt by prompt
Every prompt Claude Sonnet 5 and DeepSeek V4 Pro both answered, compared directly, their biggest differences first. One run each, through OpenRouter: a wait depends on the provider and the load that day, so a lead under 10% counts as close.
Of the 50 prompts both answered, both passed 42, only Claude Sonnet 5 passed 4, only DeepSeek V4 Pro passed 3, and neither passed 1. Claude Sonnet 5 answered sooner on 25 of the 50 and DeepSeek V4 Pro on 18; the rest were within 10% of each other. The 50 replies cost $0.2030 on Claude Sonnet 5 and $0.1030 on DeepSeek V4 Pro: 2.0× less on DeepSeek V4 Pro.
The 7 prompts only one of Claude Sonnet 5 and DeepSeek V4 Pro passed
Parse CSV with quoted fields (coding): Claude Sonnet 5 passed and DeepSeek V4 Pro didn't. Claude Sonnet 5: All 8 tests passed. DeepSeek V4 Pro: No answer within Pro's reply limit of 8,000 tokens: the model spent them all reasoning.
Announce a second bakery shop on LinkedIn (writing): DeepSeek V4 Pro passed and Claude Sonnet 5 didn't. Claude Sonnet 5: Graded 3.5 of 5 on average (lowest 3). DeepSeek V4 Pro: Graded 4.3 of 5 on average (lowest 4).
A product announcement with five rules (writing): Claude Sonnet 5 passed and DeepSeek V4 Pro didn't. Claude Sonnet 5: Graded 4.3 of 5 on average (lowest 4). DeepSeek V4 Pro: Graded 3.7 of 5 on average (lowest 2); but doesn't end with a question.
Argue both sides of free buses (writing): Claude Sonnet 5 passed and DeepSeek V4 Pro didn't. Claude Sonnet 5: Graded 4.0 of 5 on average (lowest 4). DeepSeek V4 Pro: Graded 4.0 of 5 on average (lowest 4); but a paragraph of 95 words, over the 90 allowed.
An article in three bullets (summarization): DeepSeek V4 Pro passed and Claude Sonnet 5 didn't. Claude Sonnet 5: Graded 3.7 of 5 on average (lowest 3). DeepSeek V4 Pro: Graded 4.3 of 5 on average (lowest 4).
Correlation between ad spend and sign-ups (data analysis): DeepSeek V4 Pro passed and Claude Sonnet 5 didn't. Claude Sonnet 5: Final answer 0.99; expected 0.97. DeepSeek V4 Pro: Final answer 0.97: right.
A frustrated customer (customer support): Claude Sonnet 5 passed and DeepSeek V4 Pro didn't. Claude Sonnet 5: Graded 4.3 of 5 on average (lowest 4). DeepSeek V4 Pro: Graded 3.3 of 5 on average (lowest 2).
Job by job, the widest gaps first
Writing: Claude Sonnet 5 passed 4 of 5 and DeepSeek V4 Pro 3 of 5. DeepSeek V4 Pro answered 2.0× sooner at the median, 4.5 s against 2.2 s. DeepSeek V4 Pro cost 7.7× less, $0.0171 against $0.0022 for the 5 replies. Claude Sonnet 5's replies ran 79% longer, in tokens of reply, thinking not counted.
Data analysis: Claude Sonnet 5 passed 4 of 5 and DeepSeek V4 Pro 5 of 5. DeepSeek V4 Pro answered 2.1× sooner at the median, 5.3 s against 2.5 s. DeepSeek V4 Pro cost 4.2× less, $0.0344 against $0.0081 for the 5 replies. Claude Sonnet 5's replies ran 33% longer, in tokens of reply, thinking not counted.
Summarization: Claude Sonnet 5 passed 3 of 5 and DeepSeek V4 Pro 4 of 5. Claude Sonnet 5 answered 1.1× sooner at the median, 2.7 s against 3.1 s. DeepSeek V4 Pro cost 3.1× less, $0.0140 against $0.0045 for the 5 replies. Claude Sonnet 5's replies ran 54% longer, in tokens of reply, thinking not counted.
Customer support: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 4 of 5. Claude Sonnet 5 answered 1.4× sooner at the median, 3.5 s against 5.1 s. DeepSeek V4 Pro cost 3.0× less, $0.0182 against $0.0061 for the 5 replies. Claude Sonnet 5's replies ran 85% longer, in tokens of reply, thinking not counted.
Coding: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 4 of 5. Claude Sonnet 5 answered 7.5× sooner at the median, 2.7 s against 20.1 s. Claude Sonnet 5 cost 1.3× less, $0.0508 against $0.0662 for the 5 replies. Claude Sonnet 5's replies ran 62% longer, in tokens of reply, thinking not counted.
Agents and tool use: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Sonnet 5 answered 1.7× sooner at the median, 2.0 s against 3.3 s. DeepSeek V4 Pro cost 8.9× less, $0.0121 against $0.0014 for the 5 replies. Claude Sonnet 5's replies ran 32% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Their median waits were close, 1.8 s against 1.9 s. DeepSeek V4 Pro cost 6.5× less, $0.0109 against $0.0017 for the 5 replies. Claude Sonnet 5's replies ran 63% longer, in tokens of reply, thinking not counted.
Math: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. DeepSeek V4 Pro answered 1.4× sooner at the median, 3.9 s against 2.7 s. DeepSeek V4 Pro cost 5.0× less, $0.0165 against $0.0033 for the 5 replies. Claude Sonnet 5's replies ran 63% longer, in tokens of reply, thinking not counted.
Translation: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Sonnet 5 answered 1.6× sooner at the median, 2.8 s against 4.3 s. DeepSeek V4 Pro cost 3.3× less, $0.0149 against $0.0045 for the 5 replies. Claude Sonnet 5's replies ran 66% longer, in tokens of reply, thinking not counted.
SQL: Claude Sonnet 5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Sonnet 5 answered 1.7× sooner at the median, 2.2 s against 3.8 s. DeepSeek V4 Pro cost 2.9× less, $0.0142 against $0.0049 for the 5 replies. Claude Sonnet 5's replies ran 38% longer, in tokens of reply, thinking not counted.
All 50 prompts: who passed, who answered sooner, who cost less
| Prompt | Result | Sooner | Cheaper |
|---|---|---|---|
| Turn a title into a URL slug | Both passed | Closetook 2.3 s and 2.1 s | DeepSeek V4 Pro, 1.9×cost $0.0024 and $0.0013 |
| Parse a duration like “1h 30m” | Both passed | Claude Sonnet 5, 7.8×took 2.6 s and 20.1 s | DeepSeek V4 Pro, 1.2×cost $0.0036 and $0.0030 |
| Merge overlapping intervals | Both passed | Claude Sonnet 5, 2.5×took 2.7 s and 6.6 s | DeepSeek V4 Pro, 7.0×cost $0.0034 and $0.0005 |
| Evaluate an arithmetic expression, no eval | Both passed | Claude Sonnet 5, 2.4×took 16.9 s and 40.3 s | Claude Sonnet 5, 1.3×cost $0.0226 and $0.0291 |
| Parse CSV with quoted fields | Only Claude Sonnet 5 | Claude Sonnet 5, 4.4×took 15.8 s and 69.1 s | Claude Sonnet 5, 1.7×cost $0.0187 and $0.0323 |
| Announce a second bakery shop on LinkedIn | Only DeepSeek V4 Pro | DeepSeek V4 Pro, 2.4×took 4.6 s and 1.9 s | DeepSeek V4 Pro, 4.4×cost $0.0037 and $0.0008 |
| Rewrite corporate jargon in plain words | Both passed | DeepSeek V4 Pro, 2.4×took 2.7 s and 1.2 s | DeepSeek V4 Pro, 3.8×cost $0.0022 and $0.0006 |
| Decline a meeting and offer two times | Both passed | DeepSeek V4 Pro, 1.2×took 2.8 s and 2.2 s | DeepSeek V4 Pro, 7.7×cost $0.0026 and $0.0003 |
| A product announcement with five rules | Only Claude Sonnet 5 | DeepSeek V4 Pro, 1.2×took 4.5 s and 3.8 s | DeepSeek V4 Pro, 23.9×cost $0.0035 and $0.0001 |
| Argue both sides of free buses | Only Claude Sonnet 5 | Claude Sonnet 5, 1.2×took 6.6 s and 7.8 s | DeepSeek V4 Pro, 16.1×cost $0.0050 and $0.0003 |
| A discount, then sales tax | Both passed | Claude Sonnet 5, 1.4×took 1.9 s and 2.7 s | DeepSeek V4 Pro, 8.0×cost $0.0015 and $0.0002 |
| Pens at 3 for $4 | Both passed | DeepSeek V4 Pro, 2.5×took 6.3 s and 2.6 s | DeepSeek V4 Pro, 4.0×cost $0.0061 and $0.0016 |
| Compound interest over three years | Both passed | DeepSeek V4 Pro, 2.4×took 3.7 s and 1.5 s | DeepSeek V4 Pro, 6.0×cost $0.0021 and $0.0004 |
| Four-digit numbers whose digits sum to 9 | Both passed | DeepSeek V4 Pro, 1.4×took 4.5 s and 3.2 s | DeepSeek V4 Pro, 6.5×cost $0.0039 and $0.0006 |
| The highest of three dice is a 5 | Both passed | DeepSeek V4 Pro, 1.1×took 3.9 s and 3.5 s | DeepSeek V4 Pro, 4.6×cost $0.0028 and $0.0006 |
| An article in three bullets | Only DeepSeek V4 Pro | Claude Sonnet 5, 2.3×took 2.6 s and 6.1 s | DeepSeek V4 Pro, 1.3×cost $0.0027 and $0.0021 |
| An email thread in one sentence | Neither passed | Claude Sonnet 5, 1.2×took 2.3 s and 2.8 s | DeepSeek V4 Pro, 13.1×cost $0.0019 and $0.0001 |
| Decisions and action items from a meeting | Both passed | DeepSeek V4 Pro, 1.9×took 2.8 s and 1.5 s | DeepSeek V4 Pro, 6.8×cost $0.0033 and $0.0005 |
| A quarterly memo for the CEO | Both passed | Closetook 3.0 s and 3.1 s | DeepSeek V4 Pro, 18.3×cost $0.0033 and $0.0002 |
| A study with a negative result | Both passed | Claude Sonnet 5, 1.3×took 2.7 s and 3.5 s | DeepSeek V4 Pro, 1.7×cost $0.0028 and $0.0016 |
| The region with the most revenue | Both passed | DeepSeek V4 Pro, 3.3×took 6.4 s and 2.0 s | DeepSeek V4 Pro, 2.8×cost $0.0041 and $0.0014 |
| Average order value in August | Both passed | Closetook 3.9 s and 3.7 s | DeepSeek V4 Pro, 2.0×cost $0.0041 and $0.0021 |
| Revenue change from July to August | Both passed | DeepSeek V4 Pro, 2.1×took 5.3 s and 2.5 s | DeepSeek V4 Pro, 3.7×cost $0.0062 and $0.0017 |
| A median, filtered two ways | Both passed | DeepSeek V4 Pro, 3.8×took 4.9 s and 1.3 s | DeepSeek V4 Pro, 4.3×cost $0.0036 and $0.0008 |
| Correlation between ad spend and sign-ups | Only DeepSeek V4 Pro | Claude Sonnet 5, 3.0×took 13.8 s and 41.2 s | DeepSeek V4 Pro, 7.7×cost $0.0165 and $0.0021 |
| A late order | Both passed | Claude Sonnet 5, 5.8×took 3.5 s and 20.2 s | Claude Sonnet 5, 1.2×cost $0.0036 and $0.0041 |
| A return inside the window | Both passed | DeepSeek V4 Pro, 1.2×took 2.9 s and 2.4 s | DeepSeek V4 Pro, 3.5×cost $0.0032 and $0.0009 |
| A frustrated customer | Only Claude Sonnet 5 | Claude Sonnet 5, 2.0×took 4.4 s and 8.6 s | DeepSeek V4 Pro, 8.1×cost $0.0041 and $0.0005 |
| A refund request outside the window | Both passed | Claude Sonnet 5, 1.2×took 3.2 s and 3.9 s | DeepSeek V4 Pro, 11.5×cost $0.0031 and $0.0003 |
| A message with a planted instruction | Both passed | Claude Sonnet 5, 1.1×took 4.6 s and 5.1 s | DeepSeek V4 Pro, 13.2×cost $0.0041 and $0.0003 |
| A delivery message into Spanish | Both passed | Claude Sonnet 5, 1.6×took 2.7 s and 4.3 s | DeepSeek V4 Pro, 3.2×cost $0.0029 and $0.0009 |
| A product description into French | Both passed | Claude Sonnet 5, 1.2×took 2.5 s and 3.1 s | DeepSeek V4 Pro, 12.8×cost $0.0029 and $0.0002 |
| A meeting note into German | Both passed | Claude Sonnet 5, 8.0×took 2.8 s and 22.0 s | DeepSeek V4 Pro, 2.7×cost $0.0027 and $0.0010 |
| Idioms into natural Japanese | Both passed | Claude Sonnet 5, 1.2×took 4.1 s and 4.7 s | DeepSeek V4 Pro, 1.8×cost $0.0028 and $0.0015 |
| A lease clause into Brazilian Portuguese | Both passed | Closetook 3.8 s and 3.7 s | DeepSeek V4 Pro, 4.3×cost $0.0036 and $0.0008 |
| Customers in one country | Both passed | Closetook 1.8 s and 1.9 s | DeepSeek V4 Pro, 11.9×cost $0.0020 and $0.0002 |
| Count orders by status | Both passed | Claude Sonnet 5, 1.4×took 2.0 s and 2.7 s | DeepSeek V4 Pro, 10.3×cost $0.0020 and $0.0002 |
| Revenue by category | Both passed | Closetook 3.5 s and 3.8 s | DeepSeek V4 Pro, 15.2×cost $0.0031 and $0.0002 |
| Every customer, even those without orders | Both passed | Claude Sonnet 5, 2.1×took 2.2 s and 4.5 s | Closecost $0.0030 and $0.0028 |
| Monthly revenue with a running total | Both passed | Claude Sonnet 5, 11.5×took 3.0 s and 34.4 s | DeepSeek V4 Pro, 2.7×cost $0.0042 and $0.0016 |
| A fact from one section | Both passed | Claude Sonnet 5, 1.3×took 1.7 s and 2.2 s | DeepSeek V4 Pro, 8.2×cost $0.0019 and $0.0002 |
| Core hours and start times | Both passed | Claude Sonnet 5, 1.2×took 2.1 s and 2.5 s | DeepSeek V4 Pro, 3.8×cost $0.0022 and $0.0006 |
| Two sections in one answer | Both passed | DeepSeek V4 Pro, 1.4×took 1.8 s and 1.3 s | DeepSeek V4 Pro, 7.7×cost $0.0022 and $0.0003 |
| A later amendment changes the answer | Both passed | DeepSeek V4 Pro, 1.6×took 2.1 s and 1.3 s | DeepSeek V4 Pro, 7.4×cost $0.0026 and $0.0004 |
| A question the handbook doesn't answer | Both passed | Closetook 1.8 s and 1.9 s | DeepSeek V4 Pro, 8.4×cost $0.0019 and $0.0002 |
| Pick the tool and work out the date | Both passed | Claude Sonnet 5, 1.9×took 1.7 s and 3.2 s | DeepSeek V4 Pro, 8.9×cost $0.0018 and $0.0002 |
| Convert a currency | Both passed | Claude Sonnet 5, 1.8×took 2.0 s and 3.4 s | DeepSeek V4 Pro, 16.9×cost $0.0018 and $0.0001 |
| Book a meeting from a sentence | Both passed | DeepSeek V4 Pro, 1.6×took 5.7 s and 3.5 s | DeepSeek V4 Pro, 14.6×cost $0.0037 and $0.0003 |
| Search, but don't book | Both passed | DeepSeek V4 Pro, 1.4×took 1.9 s and 1.3 s | DeepSeek V4 Pro, 3.3×cost $0.0020 and $0.0006 |
| Two calls with a unit conversion | Both passed | DeepSeek V4 Pro, 1.1×took 3.8 s and 3.3 s | DeepSeek V4 Pro, 15.2×cost $0.0028 and $0.0002 |
Claude Sonnet 5 vs DeepSeek V4 Pro in our test runs
Claude Sonnet 5 and DeepSeek V4 Pro on the same prompts, job by job: how many replies passed their check.
Based on 100 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
| Job | Claude Sonnet 5 | DeepSeek V4 Pro |
|---|---|---|
| Coding | 5 of 5 | 4 of 5 |
| Writing | 4 of 5 | 3 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 3 of 5 | 4 of 5 |
| Data analysis | 4 of 5 | 5 of 5 |
| Customer support | 5 of 5 | 4 of 5 |
| Translation | 5 of 5 | 5 of 5 |
| SQL | 5 of 5 | 5 of 5 |
| RAG and answering from documents | 5 of 5 | 5 of 5 |
| Agents and tool use | 5 of 5 | 5 of 5 |
| All jobs | 46 of 50 · 1 message each · $0.0041 a reply | 45 of 50 · 1 message each · $0.0021 a reply |
The same prompts, sent to both through llmwise's own pipeline and checked the same way: five for each job. A bold count is the one that passed more. Messages: what each reply counted as on Pro. Cost: what OpenRouter charged us per reply, on average. Every prompt, and how it's scored.
Where they differed most, coding: both replies to a prompt only one of them passed.
A hard prompt: “Parse CSV with quoted fields”, in full.
Claude Sonnet 5
Passed: All 8 tests passed.
```javascript function parseCsv(text) { const rows = []; let row = []; let field = ''; let i = 0; const n = text.length; let inQuotes = false; while (i < n) { const c = text[i]; if (inQuotes) { if (c === '"') { if (text[i + 1] === '"') { field += '"'; i += 2; } else { inQuotes = false; i++; } } else { field += c; i++; } continue; } if (c === '"' && field === '') { inQuotes = true; i++; } else if (c === ',') { row.push(field); field = ''; i++; } else if (c === '\r' && text[i + 1] === '\n') { row.push(field); rows.push(row); row = []; field = ''; i += 2; } else if (c === '\n') { row.push(field); rows.push(row); row = []; field = ''; i++; } else { field += c; i++; } } // Only push the final row if there's actually pending content; // a trailing line break should not create an extra empty row. if (field !== '' || row.length > 0) { row.push(field); rows.push(row); } return rows; } ```667 tokens in, 1,737 out (1,274 of them reasoning) · 15.8 s · $0.0187 · 1 message on Pro · answered by anthropic/claude-sonnet-5 via Claude Platform on AWS ·
DeepSeek V4 Pro
Failed: No answer within Pro's reply limit of 8,000 tokens: the model spent them all reasoning.
(no reply)
493 tokens in, 8,000 out (7,805 of them reasoning) · 69.1 s · $0.0323 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via CoreWeave ·
Claude Sonnet 5 and DeepSeek V4 Pro on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | Claude Sonnet 5 | DeepSeek V4 Pro |
|---|---|---|---|
| Free | $0 | In the one-time trial of 5 messages | In the one-time trial of 5 messages |
| Pro | $20 a month | Up to 125 a month | Up to 250 a month |
| Max | $50 a month | Up to 400 a month | Up to 800 a month |
| Ultra | $100 a month | Up to 900 a month | Up to 1,800 a month |
| Studio | $200 a month | Up to 2,000 a month | Up to 4,000 a month |
Prices don't include tax, which is added where it applies and shown before you pay. A paid plan's month is one allowance shared by every model, so each monthly count is the most you get if all of it goes to that model. It renews each billing period; everyday models refill daily at 00:00 UTC. Long chats count more per reply. How pricing works.
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.
What differs
Messages on Pro
DeepSeek V4 Pro gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Claude Sonnet 5.
Context window
Claude Sonnet 5 takes up to 1M tokens; DeepSeek V4 Pro up to 1.05M tokens. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Images and PDFs
DeepSeek V4 Pro doesn't read images. DeepSeek V4 Pro gets a PDF's text rather than the file itself.
On Free
Both are in the free trial.
Where messages go
Claude Sonnet 5: Sent to Anthropic directly. DeepSeek V4 Pro: Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked.
Fact by fact
| Fact | Claude Sonnet 5 | DeepSeek V4 Pro |
|---|---|---|
| Context window | 1M tokens | 1.05M tokens |
| Reads images | Yes | No |
| PDFs | Whole file | Text only |
| Reasoning | Yes | Yes |
| API price (September 2026) | $2.00 in / $10.00 out per million tokens | $0.44 in / $2.90 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0150 | $0.0038 |
| A $10 top-up adds | 100 messages | 200 messages |
| Where a message goes | Sent to Anthropic directly. | Served through OpenRouter, only by hosts that don't store or train on prompts. The maker's own endpoint is never asked. |
| If the provider fails | If Anthropic fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Claude Sonnet 5 through OpenRouter instead. | When one host is down, OpenRouter moves the request to another host that meets the same rules. |
| Anthropic's safety fallback | Doesn't apply | Doesn't apply |
Claude Sonnet 5 or DeepSeek V4 Pro?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
Pick Claude Sonnet 5: it reads images; it reads a PDF as the whole file, charts and scans included.
Pick DeepSeek V4 Pro: more messages for the money, up to 250 messages a month on Pro.
Each model's page, the families, and other pairs
Claude Sonnet 5 vs DeepSeek V4 Pro is one pair of models. The page below covers the whole families.
- Claude Sonnet 5: price, limits and messages on every plan
- DeepSeek V4 Pro: price, limits and messages on every plan
- DeepSeek vs Claude
- Claude Opus 5.5 vs Claude Sonnet 5
- Claude Sonnet 5.5 vs Claude Sonnet 5
- Claude Fable 5.1 vs Claude Sonnet 5
- Claude Opus 5.5 vs DeepSeek V4 Pro
- DeepSeek V4 Pro vs Kimi K3
- DeepSeek V4 Pro vs GLM 5.3
- Every model-vs-model page
Claude Sonnet 5 is a Claude model; DeepSeek V4 Pro is a DeepSeek model.
Questions
Is Claude Sonnet 5 or DeepSeek V4 Pro cheaper in llmwise?
DeepSeek V4 Pro gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for Claude Sonnet 5. Every paid plan's monthly allowance is shared by all models, so each count is the most you get if it all goes to that model.
Can I try Claude Sonnet 5 and DeepSeek V4 Pro for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, Claude Sonnet 5 or DeepSeek V4 Pro?
DeepSeek V4 Pro: 1.05M tokens, against 1M tokens. A chat in llmwise holds up to 200k tokens, which fits in either, so the difference shows only through each maker's own API.
Can I use Claude Sonnet 5 and DeepSeek V4 Pro in the same chat?
Yes. Pick Claude Sonnet 5 for one message and DeepSeek V4 Pro for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, Claude Sonnet 5 or DeepSeek V4 Pro?
On the same 50 prompts, run on September 27, 2026, Claude Sonnet 5 passed 46 and DeepSeek V4 Pro passed 45. The table on this page has each job, and every reply is published.
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.