Model vs model
Claude Haiku 4.5 vs DeepSeek V4 Pro
Claude Haiku 4.5 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 Haiku 4.5 page, OpenRouter's DeepSeek V4 Pro page. Updated .
Short answer
They cost the same in llmwise: up to 250 messages a month on Pro on either. Otherwise, only Claude Haiku 4.5 reads images and only Claude Haiku 4.5 reads a PDF as the whole file. In our test runs, Claude Haiku 4.5 passed 43 of the 50 prompts both answered and DeepSeek V4 Pro 45; 6 prompts split them, most on data analysis (3 to 5).
Claude Haiku 4.5 vs DeepSeek V4 Pro, prompt by prompt
Every prompt Claude Haiku 4.5 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 41, only Claude Haiku 4.5 passed 2, only DeepSeek V4 Pro passed 4, and neither passed 3. Claude Haiku 4.5 answered sooner on 38 of the 50 and DeepSeek V4 Pro on 8; the rest were within 10% of each other. The 50 replies cost $0.0741 on Claude Haiku 4.5 and $0.1030 on DeepSeek V4 Pro: 1.4× less on Claude Haiku 4.5.
The 6 prompts only one of Claude Haiku 4.5 and DeepSeek V4 Pro passed
Evaluate an arithmetic expression, no eval (coding): DeepSeek V4 Pro passed and Claude Haiku 4.5 didn't. Claude Haiku 4.5: 14 of 15 tests passed. First failure: evaluate("-2 ^ 2"): Expected values to be strictly deep-equal: DeepSeek V4 Pro: All 15 tests passed.
Argue both sides of free buses (writing): Claude Haiku 4.5 passed and DeepSeek V4 Pro didn't. Claude Haiku 4.5: 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 email thread in one sentence (summarization): Claude Haiku 4.5 passed and DeepSeek V4 Pro didn't. Claude Haiku 4.5: Graded 4.7 of 5 on average (lowest 4). DeepSeek V4 Pro: Graded 4.7 of 5 on average (lowest 4); but 33 words, over the 30 allowed.
Average order value in August (data analysis): DeepSeek V4 Pro passed and Claude Haiku 4.5 didn't. Claude Haiku 4.5: Final answer 275.00; expected 300. DeepSeek V4 Pro: Final answer 300.00: right.
Correlation between ad spend and sign-ups (data analysis): DeepSeek V4 Pro passed and Claude Haiku 4.5 didn't. Claude Haiku 4.5: Final answer 0.99; expected 0.97. DeepSeek V4 Pro: Final answer 0.97: right.
A message with a planted instruction (customer support): DeepSeek V4 Pro passed and Claude Haiku 4.5 didn't. Claude Haiku 4.5: Graded 4.3 of 5 on average (lowest 3); but 165 words, over the 150 allowed. DeepSeek V4 Pro: Graded 4.7 of 5 on average (lowest 4).
Job by job, the widest gaps first
Data analysis: Claude Haiku 4.5 passed 3 of 5 and DeepSeek V4 Pro 5 of 5. Their median waits were close, 2.7 s against 2.5 s. DeepSeek V4 Pro cost 1.5× less, $0.0125 against $0.0081 for the 5 replies. Claude Haiku 4.5's replies ran 233% longer, in tokens of reply, thinking not counted.
Coding: Claude Haiku 4.5 passed 3 of 5 and DeepSeek V4 Pro 4 of 5. Claude Haiku 4.5 answered 8.6× sooner at the median, 2.3 s against 20.1 s. Claude Haiku 4.5 cost 4.8× less, $0.0137 against $0.0662 for the 5 replies. Claude Haiku 4.5's replies ran 57% longer, in tokens of reply, thinking not counted.
Writing: Claude Haiku 4.5 passed 4 of 5 and DeepSeek V4 Pro 3 of 5. Their median waits were close, 2.2 s against 2.2 s. DeepSeek V4 Pro cost 2.5× less, $0.0057 against $0.0022 for the 5 replies. Their replies ran to about the same length.
Customer support: Claude Haiku 4.5 passed 3 of 5 and DeepSeek V4 Pro 4 of 5. Claude Haiku 4.5 answered 1.9× sooner at the median, 2.7 s against 5.1 s. DeepSeek V4 Pro cost 1.2× less, $0.0073 against $0.0061 for the 5 replies. Claude Haiku 4.5's replies ran 51% longer, in tokens of reply, thinking not counted.
Summarization: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 4 of 5. Claude Haiku 4.5 answered 1.9× sooner at the median, 1.7 s against 3.1 s. DeepSeek V4 Pro cost 1.1× less, $0.0051 against $0.0045 for the 5 replies. Their replies ran to about the same length.
Agents and tool use: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Haiku 4.5 answered 2.9× sooner at the median, 1.1 s against 3.3 s. DeepSeek V4 Pro cost 3.5× less, $0.0047 against $0.0014 for the 5 replies. Claude Haiku 4.5's replies ran 67% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Haiku 4.5 answered 1.6× sooner at the median, 1.2 s against 1.9 s. DeepSeek V4 Pro cost 3.0× less, $0.0050 against $0.0017 for the 5 replies. Claude Haiku 4.5's replies ran 155% longer, in tokens of reply, thinking not counted.
Math: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Haiku 4.5 answered 1.2× sooner at the median, 2.2 s against 2.7 s. DeepSeek V4 Pro cost 2.3× less, $0.0077 against $0.0033 for the 5 replies. Claude Haiku 4.5's replies ran 179% longer, in tokens of reply, thinking not counted.
Translation: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Haiku 4.5 answered 2.3× sooner at the median, 1.8 s against 4.3 s. DeepSeek V4 Pro cost 1.6× less, $0.0074 against $0.0045 for the 5 replies. Claude Haiku 4.5's replies ran 88% longer, in tokens of reply, thinking not counted.
SQL: Claude Haiku 4.5 passed 5 of 5 and DeepSeek V4 Pro 5 of 5. Claude Haiku 4.5 answered 3.0× sooner at the median, 1.2 s against 3.8 s. They cost about the same, $0.0049 against $0.0049 for the 5 replies. Their replies ran to about the same length.
All 50 prompts: who passed, who answered sooner, who cost less
| Prompt | Result | Sooner | Cheaper |
|---|---|---|---|
| Turn a title into a URL slug | Both passed | Claude Haiku 4.5, 1.4×took 1.5 s and 2.1 s | Claude Haiku 4.5, 1.4×cost $0.0010 and $0.0013 |
| Parse a duration like “1h 30m” | Both passed | Claude Haiku 4.5, 8.6×took 2.3 s and 20.1 s | Claude Haiku 4.5, 1.4×cost $0.0022 and $0.0030 |
| Merge overlapping intervals | Both passed | Claude Haiku 4.5, 3.4×took 2.0 s and 6.6 s | DeepSeek V4 Pro, 3.5×cost $0.0017 and $0.0005 |
| Evaluate an arithmetic expression, no eval | Only DeepSeek V4 Pro | Claude Haiku 4.5, 5.3×took 7.6 s and 40.3 s | Claude Haiku 4.5, 5.2×cost $0.0056 and $0.0291 |
| Parse CSV with quoted fields | Neither passed | Claude Haiku 4.5, 19.8×took 3.5 s and 69.1 s | Claude Haiku 4.5, 9.8×cost $0.0033 and $0.0323 |
| Announce a second bakery shop on LinkedIn | Both passed | DeepSeek V4 Pro, 1.3×took 2.6 s and 1.9 s | DeepSeek V4 Pro, 1.5×cost $0.0013 and $0.0008 |
| Rewrite corporate jargon in plain words | Both passed | DeepSeek V4 Pro, 1.4×took 1.6 s and 1.2 s | DeepSeek V4 Pro, 1.4×cost $0.0008 and $0.0006 |
| Decline a meeting and offer two times | Both passed | Claude Haiku 4.5, 1.1×took 2.0 s and 2.2 s | DeepSeek V4 Pro, 2.9×cost $0.0010 and $0.0003 |
| A product announcement with five rules | Neither passed | Claude Haiku 4.5, 1.7×took 2.2 s and 3.8 s | DeepSeek V4 Pro, 8.3×cost $0.0012 and $0.0001 |
| Argue both sides of free buses | Only Claude Haiku 4.5 | Claude Haiku 4.5, 2.3×took 3.4 s and 7.8 s | DeepSeek V4 Pro, 4.4×cost $0.0014 and $0.0003 |
| A discount, then sales tax | Both passed | Claude Haiku 4.5, 2.4×took 1.1 s and 2.7 s | DeepSeek V4 Pro, 3.9×cost $0.0007 and $0.0002 |
| Pens at 3 for $4 | Both passed | Claude Haiku 4.5, 1.2×took 2.2 s and 2.6 s | Closecost $0.0014 and $0.0016 |
| Compound interest over three years | Both passed | DeepSeek V4 Pro, 2.3×took 3.5 s and 1.5 s | DeepSeek V4 Pro, 3.7×cost $0.0013 and $0.0004 |
| Four-digit numbers whose digits sum to 9 | Both passed | Claude Haiku 4.5, 1.1×took 2.9 s and 3.2 s | DeepSeek V4 Pro, 4.0×cost $0.0024 and $0.0006 |
| The highest of three dice is a 5 | Both passed | Claude Haiku 4.5, 1.5×took 2.2 s and 3.5 s | DeepSeek V4 Pro, 3.0×cost $0.0018 and $0.0006 |
| An article in three bullets | Both passed | Claude Haiku 4.5, 3.4×took 1.8 s and 6.1 s | Claude Haiku 4.5, 1.9×cost $0.0011 and $0.0021 |
| An email thread in one sentence | Only Claude Haiku 4.5 | Claude Haiku 4.5, 2.2×took 1.3 s and 2.8 s | DeepSeek V4 Pro, 4.9×cost $0.0007 and $0.0001 |
| Decisions and action items from a meeting | Both passed | DeepSeek V4 Pro, 1.1×took 1.7 s and 1.5 s | DeepSeek V4 Pro, 2.2×cost $0.0011 and $0.0005 |
| A quarterly memo for the CEO | Both passed | Claude Haiku 4.5, 2.0×took 1.5 s and 3.1 s | DeepSeek V4 Pro, 6.8×cost $0.0012 and $0.0002 |
| A study with a negative result | Both passed | Closetook 3.4 s and 3.5 s | Claude Haiku 4.5, 1.6×cost $0.0010 and $0.0016 |
| The region with the most revenue | Both passed | DeepSeek V4 Pro, 1.4×took 2.7 s and 2.0 s | DeepSeek V4 Pro, 1.8×cost $0.0026 and $0.0014 |
| Average order value in August | Only DeepSeek V4 Pro | Claude Haiku 4.5, 1.8×took 2.1 s and 3.7 s | DeepSeek V4 Pro, 1.1×cost $0.0023 and $0.0021 |
| Revenue change from July to August | Both passed | DeepSeek V4 Pro, 1.7×took 4.2 s and 2.5 s | DeepSeek V4 Pro, 1.3×cost $0.0022 and $0.0017 |
| A median, filtered two ways | Both passed | DeepSeek V4 Pro, 1.5×took 2.0 s and 1.3 s | DeepSeek V4 Pro, 1.9×cost $0.0016 and $0.0008 |
| Correlation between ad spend and sign-ups | Only DeepSeek V4 Pro | Claude Haiku 4.5, 8.3×took 5.0 s and 41.2 s | DeepSeek V4 Pro, 1.7×cost $0.0037 and $0.0021 |
| A late order | Both passed | Claude Haiku 4.5, 10.0×took 2.0 s and 20.2 s | Claude Haiku 4.5, 3.0×cost $0.0014 and $0.0041 |
| A return inside the window | Both passed | Closetook 2.4 s and 2.4 s | DeepSeek V4 Pro, 1.4×cost $0.0013 and $0.0009 |
| A frustrated customer | Neither passed | Claude Haiku 4.5, 2.9×took 3.0 s and 8.6 s | DeepSeek V4 Pro, 3.1×cost $0.0016 and $0.0005 |
| A refund request outside the window | Both passed | Claude Haiku 4.5, 1.4×took 2.7 s and 3.9 s | DeepSeek V4 Pro, 4.7×cost $0.0013 and $0.0003 |
| A message with a planted instruction | Only DeepSeek V4 Pro | Claude Haiku 4.5, 1.6×took 3.2 s and 5.1 s | DeepSeek V4 Pro, 5.8×cost $0.0018 and $0.0003 |
| A delivery message into Spanish | Both passed | Claude Haiku 4.5, 2.8×took 1.5 s and 4.3 s | DeepSeek V4 Pro, 1.2×cost $0.0011 and $0.0009 |
| A product description into French | Both passed | Claude Haiku 4.5, 2.2×took 1.4 s and 3.1 s | DeepSeek V4 Pro, 5.1×cost $0.0011 and $0.0002 |
| A meeting note into German | Both passed | Claude Haiku 4.5, 11.9×took 1.8 s and 22.0 s | Closecost $0.0010 and $0.0010 |
| Idioms into natural Japanese | Both passed | Claude Haiku 4.5, 1.4×took 3.3 s and 4.7 s | DeepSeek V4 Pro, 1.3×cost $0.0019 and $0.0015 |
| A lease clause into Brazilian Portuguese | Both passed | Closetook 3.5 s and 3.7 s | DeepSeek V4 Pro, 2.6×cost $0.0022 and $0.0008 |
| Customers in one country | Both passed | Claude Haiku 4.5, 1.7×took 1.1 s and 1.9 s | DeepSeek V4 Pro, 3.8×cost $0.0007 and $0.0002 |
| Count orders by status | Both passed | Claude Haiku 4.5, 3.3×took 0.8 s and 2.7 s | DeepSeek V4 Pro, 3.3×cost $0.0006 and $0.0002 |
| Revenue by category | Both passed | Claude Haiku 4.5, 3.0×took 1.2 s and 3.8 s | DeepSeek V4 Pro, 5.3×cost $0.0011 and $0.0002 |
| Every customer, even those without orders | Both passed | Claude Haiku 4.5, 2.1×took 2.1 s and 4.5 s | Claude Haiku 4.5, 2.7×cost $0.0010 and $0.0028 |
| Monthly revenue with a running total | Both passed | Claude Haiku 4.5, 21.2×took 1.6 s and 34.4 s | Closecost $0.0016 and $0.0016 |
| A fact from one section | Both passed | Claude Haiku 4.5, 2.1×took 1.1 s and 2.2 s | DeepSeek V4 Pro, 3.8×cost $0.0009 and $0.0002 |
| Core hours and start times | Both passed | Claude Haiku 4.5, 2.2×took 1.1 s and 2.5 s | DeepSeek V4 Pro, 1.6×cost $0.0009 and $0.0006 |
| Two sections in one answer | Both passed | Closetook 1.3 s and 1.3 s | DeepSeek V4 Pro, 3.7×cost $0.0011 and $0.0003 |
| A later amendment changes the answer | Both passed | DeepSeek V4 Pro, 1.4×took 1.9 s and 1.3 s | DeepSeek V4 Pro, 3.5×cost $0.0012 and $0.0004 |
| A question the handbook doesn't answer | Both passed | Claude Haiku 4.5, 1.6×took 1.2 s and 1.9 s | DeepSeek V4 Pro, 4.0×cost $0.0009 and $0.0002 |
| Pick the tool and work out the date | Both passed | Claude Haiku 4.5, 3.0×took 1.1 s and 3.2 s | DeepSeek V4 Pro, 4.2×cost $0.0008 and $0.0002 |
| Convert a currency | Both passed | Claude Haiku 4.5, 3.4×took 1.0 s and 3.4 s | DeepSeek V4 Pro, 8.0×cost $0.0008 and $0.0001 |
| Book a meeting from a sentence | Both passed | Claude Haiku 4.5, 2.9×took 1.2 s and 3.5 s | DeepSeek V4 Pro, 4.1×cost $0.0010 and $0.0003 |
| Search, but don't book | Both passed | Claude Haiku 4.5, 1.2×took 1.1 s and 1.3 s | DeepSeek V4 Pro, 1.6×cost $0.0010 and $0.0006 |
| Two calls with a unit conversion | Both passed | Claude Haiku 4.5, 2.7×took 1.2 s and 3.3 s | DeepSeek V4 Pro, 5.6×cost $0.0011 and $0.0002 |
Claude Haiku 4.5 vs DeepSeek V4 Pro in our test runs
Claude Haiku 4.5 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 Haiku 4.5 | DeepSeek V4 Pro |
|---|---|---|
| Coding | 3 of 5 | 4 of 5 |
| Writing | 4 of 5 | 3 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 5 of 5 | 4 of 5 |
| Data analysis | 3 of 5 | 5 of 5 |
| Customer support | 3 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 | 43 of 50 · 1 message each · $0.0015 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, data analysis: both replies to a prompt only one of them passed.
An everyday prompt: “Average order value in August”, in full.
Claude Haiku 4.5
Failed: Final answer 275.00; expected 300.
I'll find the average revenue per order for August 2026. **August 2026 orders:** | order_id | date | quantity | price | revenue | |----------|------|----------|-------|---------| | 1007 | 2026-08-02 | 2 | 45.00 | 90.00 | | 1008 | 2026-08-06 | 1 | 310.00 | 310.00 | | 1009 | 2026-08-11 | 2 | 310.00 | 620.00 | | 1010 | 2026-08-15 | 5 | 45.00 | 225.00 | | 1011 | 2026-08-19 | 3 | 120.00 | 360.00 | | 1012 | 2026-08-27 | 1 | 45.00 | 45.00 | **Calculation:** - Total revenue: 90 + 310 + 620 + 225 + 360 + 45 = 1,650.00 - Number of orders: 6 - Average revenue per order: 1,650.00 ÷ 6 = 275.00 Final answer: 275.00
683 tokens in, 326 out · 2.1 s · $0.0023 · 1 message on Pro · answered by anthropic/claude-haiku-4.5 via Amazon Bedrock ·
DeepSeek V4 Pro
Passed: Final answer 300.00: right.
August 2026 orders (6 total): - 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 = 1800.00 Average = 1800.00 / 6 = 300.00 Final answer: 300.00
662 tokens in, 298 out (147 of them reasoning) · 3.7 s · $0.0021 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via AtlasCloud ·
Claude Haiku 4.5 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 Haiku 4.5 | 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 250 a month | Up to 250 a month |
| Max | $50 a month | Up to 800 a month | Up to 800 a month |
| Ultra | $100 a month | Up to 1,800 a month | Up to 1,800 a month |
| Studio | $200 a month | Up to 4,000 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
They cost the same in llmwise: up to 250 messages a month on Pro on either.
Context window
Claude Haiku 4.5 takes up to 200K 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 Haiku 4.5: 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 Haiku 4.5 | DeepSeek V4 Pro |
|---|---|---|
| Context window | 200K tokens | 1.05M tokens |
| Reads images | Yes | No |
| PDFs | Whole file | Text only |
| Reasoning | No | Yes |
| API price (September 2026) | $1.00 in / $5.00 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) | $0.0075 | $0.0038 |
| A $10 top-up adds | 200 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 Haiku 4.5 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 Haiku 4.5 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 Haiku 4.5: it reads images; it reads a PDF as the whole file, charts and scans included.
Pick DeepSeek V4 Pro: it costs its maker less to run ($0.0038 a typical message at API prices), though in llmwise the count is the same.
Each model's page, the families, and other pairs
Claude Haiku 4.5 vs DeepSeek V4 Pro is one pair of models. The page below covers the whole families.
- Claude Haiku 4.5: price, limits and messages on every plan
- DeepSeek V4 Pro: price, limits and messages on every plan
- DeepSeek vs Claude
- Claude Fable 5.1 vs Claude Haiku 4.5
- Claude Opus 5.5 vs Claude Haiku 4.5
- Claude Sonnet 5 vs Claude Haiku 4.5
- 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 Haiku 4.5 is a Claude model; DeepSeek V4 Pro is a DeepSeek model.
Questions
Is Claude Haiku 4.5 or DeepSeek V4 Pro cheaper in llmwise?
They cost the same in llmwise: up to 250 messages a month on Pro on either. 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 Haiku 4.5 and DeepSeek V4 Pro for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, Claude Haiku 4.5 or DeepSeek V4 Pro?
DeepSeek V4 Pro: 1.05M tokens, against 200K 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 Haiku 4.5 and DeepSeek V4 Pro in the same chat?
Yes. Pick Claude Haiku 4.5 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 Haiku 4.5 or DeepSeek V4 Pro?
On the same 50 prompts, run on September 27, 2026, Claude Haiku 4.5 passed 43 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.