Model vs model
Gemini 4 Argon vs Claude Opus 5.5
Gemini 4 Argon and Claude Opus 5.5 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 Gemini 4 Argon page, OpenRouter's Claude Opus 5.5 page. Updated .
Short answer
They cost the same in llmwise: up to 62 messages a month on Pro on either. Otherwise, only Claude Opus 5.5 can be passed to another model by its maker's safety system. In our test runs, Gemini 4 Argon passed 47 of the 50 prompts both answered and Claude Opus 5.5 49; 2 prompts split them, most on customer support (3 to 5).
Gemini 4 Argon vs Claude Opus 5.5, prompt by prompt
Every prompt Gemini 4 Argon and Claude Opus 5.5 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 47, only Gemini 4 Argon passed 0, only Claude Opus 5.5 passed 2, and neither passed 1. Gemini 4 Argon answered sooner on 26 of the 50 and Claude Opus 5.5 on 14; the rest were within 10% of each other. The 50 replies cost $0.0788 on Gemini 4 Argon and $0.5360 on Claude Opus 5.5: 6.8× less on Gemini 4 Argon.
The 2 prompts only one of Gemini 4 Argon and Claude Opus 5.5 passed
A late order (customer support): Claude Opus 5.5 passed and Gemini 4 Argon didn't. Gemini 4 Argon: Graded 3.7 of 5 on average (lowest 2). Claude Opus 5.5: Graded 4.3 of 5 on average (lowest 3).
A frustrated customer (customer support): Claude Opus 5.5 passed and Gemini 4 Argon didn't. Gemini 4 Argon: Graded 4.7 of 5 on average (lowest 4); but 151 words, over the 150 allowed. Claude Opus 5.5: Graded 4.0 of 5 on average (lowest 3).
Job by job, the widest gaps first
Customer support: Gemini 4 Argon passed 3 of 5 and Claude Opus 5.5 5 of 5. Gemini 4 Argon answered 1.3× sooner at the median, 5.0 s against 6.4 s. Gemini 4 Argon cost 7.0× less, $0.0078 against $0.0540 for the 5 replies. Claude Opus 5.5's replies ran 48% longer, in tokens of reply, thinking not counted.
Writing: Gemini 4 Argon passed 4 of 5 and Claude Opus 5.5 4 of 5. Gemini 4 Argon answered 1.4× sooner at the median, 5.7 s against 8.2 s. Gemini 4 Argon cost 13.2× less, $0.0070 against $0.0923 for the 5 replies. Claude Opus 5.5's replies ran 45% longer, in tokens of reply, thinking not counted.
Translation: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Gemini 4 Argon answered 1.7× sooner at the median, 3.2 s against 5.5 s. Gemini 4 Argon cost 8.7× less, $0.0062 against $0.0540 for the 5 replies. Claude Opus 5.5's replies ran 103% longer, in tokens of reply, thinking not counted.
Summarization: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Gemini 4 Argon answered 1.3× sooner at the median, 2.9 s against 3.7 s. Gemini 4 Argon cost 7.7× less, $0.0061 against $0.0475 for the 5 replies. Claude Opus 5.5's replies ran 74% longer, in tokens of reply, thinking not counted.
SQL: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Gemini 4 Argon answered 1.6× sooner at the median, 2.8 s against 4.3 s. Gemini 4 Argon cost 7.5× less, $0.0061 against $0.0459 for the 5 replies. Claude Opus 5.5's replies ran 105% longer, in tokens of reply, thinking not counted.
Coding: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Gemini 4 Argon answered 2.1× sooner at the median, 3.5 s against 7.2 s. Gemini 4 Argon cost 7.0× less, $0.0122 against $0.0853 for the 5 replies. Claude Opus 5.5's replies ran 29% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Claude Opus 5.5 answered 1.2× sooner at the median, 3.4 s against 2.9 s. Gemini 4 Argon cost 6.0× less, $0.0061 against $0.0367 for the 5 replies. Claude Opus 5.5's replies ran 28% longer, in tokens of reply, thinking not counted.
Agents and tool use: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Claude Opus 5.5 answered 1.1× sooner at the median, 3.5 s against 3.1 s. Gemini 4 Argon cost 4.7× less, $0.0054 against $0.0252 for the 5 replies. Claude Opus 5.5's replies ran 27% longer, in tokens of reply, thinking not counted.
Data analysis: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Claude Opus 5.5 answered 1.5× sooner at the median, 6.9 s against 4.6 s. Gemini 4 Argon cost 4.6× less, $0.0142 against $0.0654 for the 5 replies. Gemini 4 Argon's replies ran 82% longer, in tokens of reply, thinking not counted.
Math: Gemini 4 Argon passed 5 of 5 and Claude Opus 5.5 5 of 5. Claude Opus 5.5 answered 1.1× sooner at the median, 4.4 s against 3.9 s. Gemini 4 Argon cost 3.8× less, $0.0077 against $0.0298 for the 5 replies. Gemini 4 Argon's replies ran 33% 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 2.9 s and 3.1 s | Gemini 4 Argon, 4.7×cost $0.0012 and $0.0055 |
| Parse a duration like “1h 30m” | Both passed | Gemini 4 Argon, 2.1×took 3.5 s and 7.2 s | Gemini 4 Argon, 6.3×cost $0.0018 and $0.0112 |
| Merge overlapping intervals | Both passed | Closetook 3.4 s and 3.7 s | Gemini 4 Argon, 4.6×cost $0.0017 and $0.0077 |
| Evaluate an arithmetic expression, no eval | Both passed | Gemini 4 Argon, 1.6×took 9.7 s and 15.8 s | Gemini 4 Argon, 6.7×cost $0.0050 and $0.0336 |
| Parse CSV with quoted fields | Both passed | Gemini 4 Argon, 2.4×took 5.0 s and 11.9 s | Gemini 4 Argon, 10.8×cost $0.0025 and $0.0273 |
| Announce a second bakery shop on LinkedIn | Both passed | Gemini 4 Argon, 1.5×took 5.7 s and 8.7 s | Gemini 4 Argon, 11.1×cost $0.0016 and $0.0175 |
| Rewrite corporate jargon in plain words | Both passed | Gemini 4 Argon, 1.2×took 4.1 s and 5.1 s | Gemini 4 Argon, 7.4×cost $0.0011 and $0.0078 |
| Decline a meeting and offer two times | Both passed | Gemini 4 Argon, 1.1×took 3.6 s and 4.1 s | Gemini 4 Argon, 4.4×cost $0.0013 and $0.0056 |
| A product announcement with five rules | Both passed | Closetook 8.9 s and 8.2 s | Gemini 4 Argon, 12.8×cost $0.0013 and $0.0170 |
| Argue both sides of free buses | Neither passed | Gemini 4 Argon, 3.2×took 7.0 s and 22.5 s | Gemini 4 Argon, 25.2×cost $0.0018 and $0.0443 |
| A discount, then sales tax | Both passed | Claude Opus 5.5, 1.5×took 4.1 s and 2.7 s | Gemini 4 Argon, 3.0×cost $0.0012 and $0.0037 |
| Pens at 3 for $4 | Both passed | Gemini 4 Argon, 1.2×took 4.4 s and 5.3 s | Gemini 4 Argon, 5.6×cost $0.0015 and $0.0084 |
| Compound interest over three years | Both passed | Claude Opus 5.5, 1.1×took 4.2 s and 3.7 s | Gemini 4 Argon, 3.1×cost $0.0014 and $0.0043 |
| Four-digit numbers whose digits sum to 9 | Both passed | Closetook 4.5 s and 4.7 s | Gemini 4 Argon, 3.8×cost $0.0020 and $0.0077 |
| The highest of three dice is a 5 | Both passed | Claude Opus 5.5, 1.3×took 4.9 s and 3.9 s | Gemini 4 Argon, 3.7×cost $0.0016 and $0.0057 |
| An article in three bullets | Both passed | Gemini 4 Argon, 2.9×took 2.8 s and 8.1 s | Gemini 4 Argon, 13.8×cost $0.0012 and $0.0171 |
| An email thread in one sentence | Both passed | Claude Opus 5.5, 1.1×took 2.9 s and 2.6 s | Gemini 4 Argon, 4.6×cost $0.0010 and $0.0044 |
| Decisions and action items from a meeting | Both passed | Gemini 4 Argon, 2.0×took 2.9 s and 5.8 s | Gemini 4 Argon, 8.9×cost $0.0013 and $0.0118 |
| A quarterly memo for the CEO | Both passed | Closetook 3.5 s and 3.5 s | Gemini 4 Argon, 5.0×cost $0.0015 and $0.0075 |
| A study with a negative result | Both passed | Gemini 4 Argon, 1.1×took 3.2 s and 3.7 s | Gemini 4 Argon, 5.9×cost $0.0011 and $0.0066 |
| The region with the most revenue | Both passed | Claude Opus 5.5, 2.0×took 8.4 s and 4.1 s | Gemini 4 Argon, 4.1×cost $0.0021 and $0.0087 |
| Average order value in August | Both passed | Claude Opus 5.5, 1.3×took 5.6 s and 4.4 s | Gemini 4 Argon, 3.9×cost $0.0027 and $0.0107 |
| Revenue change from July to August | Both passed | Claude Opus 5.5, 1.3×took 6.5 s and 5.1 s | Gemini 4 Argon, 3.4×cost $0.0036 and $0.0120 |
| A median, filtered two ways | Both passed | Claude Opus 5.5, 1.5×took 6.9 s and 4.6 s | Gemini 4 Argon, 4.7×cost $0.0017 and $0.0079 |
| Correlation between ad spend and sign-ups | Both passed | Gemini 4 Argon, 1.4×took 8.4 s and 11.5 s | Gemini 4 Argon, 6.3×cost $0.0041 and $0.0261 |
| A late order | Only Claude Opus 5.5 | Gemini 4 Argon, 1.6×took 5.0 s and 7.8 s | Gemini 4 Argon, 6.7×cost $0.0017 and $0.0114 |
| A return inside the window | Both passed | Gemini 4 Argon, 1.2×took 3.7 s and 4.4 s | Gemini 4 Argon, 5.3×cost $0.0014 and $0.0074 |
| A frustrated customer | Only Claude Opus 5.5 | Closetook 5.8 s and 6.4 s | Gemini 4 Argon, 6.2×cost $0.0018 and $0.0111 |
| A refund request outside the window | Both passed | Claude Opus 5.5, 2.5×took 14.9 s and 6.1 s | Gemini 4 Argon, 7.5×cost $0.0014 and $0.0106 |
| A message with a planted instruction | Both passed | Gemini 4 Argon, 1.7×took 4.5 s and 7.9 s | Gemini 4 Argon, 9.2×cost $0.0015 and $0.0136 |
| A delivery message into Spanish | Both passed | Closetook 3.2 s and 3.2 s | Gemini 4 Argon, 5.0×cost $0.0013 and $0.0064 |
| A product description into French | Both passed | Gemini 4 Argon, 2.4×took 2.4 s and 5.8 s | Gemini 4 Argon, 9.3×cost $0.0012 and $0.0113 |
| A meeting note into German | Both passed | Claude Opus 5.5, 1.2×took 6.8 s and 5.5 s | Gemini 4 Argon, 8.3×cost $0.0012 and $0.0096 |
| Idioms into natural Japanese | Both passed | Gemini 4 Argon, 1.1×took 3.2 s and 3.6 s | Gemini 4 Argon, 5.7×cost $0.0011 and $0.0062 |
| A lease clause into Brazilian Portuguese | Both passed | Gemini 4 Argon, 1.9×took 6.1 s and 11.4 s | Gemini 4 Argon, 14.1×cost $0.0015 and $0.0204 |
| Customers in one country | Both passed | Gemini 4 Argon, 1.3×took 2.0 s and 2.5 s | Gemini 4 Argon, 5.5×cost $0.0009 and $0.0048 |
| Count orders by status | Both passed | Gemini 4 Argon, 1.2×took 2.1 s and 2.5 s | Gemini 4 Argon, 5.8×cost $0.0008 and $0.0049 |
| Revenue by category | Both passed | Claude Opus 5.5, 1.2×took 5.1 s and 4.3 s | Gemini 4 Argon, 7.4×cost $0.0012 and $0.0092 |
| Every customer, even those without orders | Both passed | Gemini 4 Argon, 1.8×took 2.8 s and 5.0 s | Gemini 4 Argon, 7.5×cost $0.0013 and $0.0094 |
| Monthly revenue with a running total | Both passed | Gemini 4 Argon, 2.2×took 3.5 s and 7.8 s | Gemini 4 Argon, 9.4×cost $0.0019 and $0.0176 |
| A fact from one section | Both passed | Claude Opus 5.5, 1.4×took 3.4 s and 2.5 s | Gemini 4 Argon, 5.3×cost $0.0010 and $0.0054 |
| Core hours and start times | Both passed | Claude Opus 5.5, 1.7×took 4.3 s and 2.6 s | Gemini 4 Argon, 4.9×cost $0.0011 and $0.0054 |
| Two sections in one answer | Both passed | Gemini 4 Argon, 1.1×took 2.5 s and 2.9 s | Gemini 4 Argon, 4.9×cost $0.0011 and $0.0053 |
| A later amendment changes the answer | Both passed | Gemini 4 Argon, 1.3×took 5.7 s and 7.7 s | Gemini 4 Argon, 7.8×cost $0.0019 and $0.0148 |
| A question the handbook doesn't answer | Both passed | Gemini 4 Argon, 1.8×took 1.9 s and 3.4 s | Gemini 4 Argon, 5.9×cost $0.0010 and $0.0057 |
| Pick the tool and work out the date | Both passed | Claude Opus 5.5, 2.0×took 5.4 s and 2.7 s | Gemini 4 Argon, 4.5×cost $0.0009 and $0.0041 |
| Convert a currency | Both passed | Closetook 2.6 s and 2.8 s | Gemini 4 Argon, 4.6×cost $0.0009 and $0.0041 |
| Book a meeting from a sentence | Both passed | Gemini 4 Argon, 1.5×took 4.9 s and 7.2 s | Gemini 4 Argon, 5.2×cost $0.0011 and $0.0059 |
| Search, but don't book | Both passed | Closetook 3.2 s and 3.1 s | Gemini 4 Argon, 4.6×cost $0.0010 and $0.0046 |
| Two calls with a unit conversion | Both passed | Closetook 3.5 s and 3.4 s | Gemini 4 Argon, 4.5×cost $0.0014 and $0.0064 |
Gemini 4 Argon vs Claude Opus 5.5 in our test runs
Gemini 4 Argon and Claude Opus 5.5 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 | Gemini 4 Argon | Claude Opus 5.5 |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 4 of 5 | 4 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 5 of 5 | 5 of 5 |
| Data analysis | 5 of 5 | 5 of 5 |
| Customer support | 3 of 5 | 5 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 | 47 of 50 · 1 message each · $0.0016 a reply | 49 of 50 · 1 message each · $0.0107 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, customer support: both replies to a prompt only one of them passed.
An everyday prompt: “A late order”, in full.
Gemini 4 Argon
Failed: Graded 3.7 of 5 on average (lowest 2).
Hi there, I’m sorry to hear your rain jacket hasn't arrived yet! Standard delivery usually takes 3 to 5 business days, so your order is currently about 4 business days past its expected window. Please reply with your order number so I can check the tracking details with our carrier and see exactly where your package is. In the meantime, to apologize for the inconvenience, here is a code for 15% off your next purchase: **SORRY15**. Also, per our policy, if your order ends up being more than 7 business days late (over 12 business days total from when you ordered), we will gladly give you free express shipping on your next order as well. As soon as you send over your order number, I'll get you an update right away. Best regards, Sam, Northwind support
770 tokens in, 185 out · 5.0 s · $0.0017 · 1 message on Pro · answered by google/gemini-4-argon via Google AI Studio ·
Claude Opus 5.5
Passed: Graded 4.3 of 5 on average (lowest 3).
Hi there, I'm sorry your rain jacket hasn't arrived yet. Standard delivery usually takes 3 to 5 business days, so your order is running late, and I understand how frustrating that is. Could you reply with your order number? I'll check the tracking details with our carrier and let you know exactly where your package is and when to expect it. If your order ends up more than 7 business days past its expected delivery date, you'll get free express shipping on your next order. Thanks for your patience, and I'll get back to you as soon as I have an update. Sam, Northwind support
715 tokens in, 395 out (209 of them reasoning) · 7.8 s · $0.0114 · 1 message on Pro · answered by anthropic/claude-opus-5.5 via Claude Platform on AWS ·
Gemini 4 Argon and Claude Opus 5.5 on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | Gemini 4 Argon | Claude Opus 5.5 |
|---|---|---|---|
| Free | $0 | Not in the trial | Not in the trial |
| Plus | $10 a month | Up to 31 a month | Up to 31 a month |
| Pro | $20 a month | Up to 62 a month | Up to 62 a month |
| Max | $50 a month | Up to 200 a month | Up to 200 a month |
| Ultra | $100 a month | Up to 450 a month | Up to 450 a month |
| Studio | $200 a month | Up to 1,000 a month | Up to 1,000 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: 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.
What differs
Messages on Pro
They cost the same in llmwise: up to 62 messages a month on Pro on either.
Context window
Gemini 4 Argon takes up to 1.05M tokens; Claude Opus 5.5 up to 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.
Images and PDFs
Both read images. Both take a PDF as the whole file, pages and all.
On Free
Neither is in the free trial: both need a paid plan, from Plus.
Where messages go
Gemini 4 Argon: Sent to Google directly. Claude Opus 5.5: Sent to Anthropic directly.
Fact by fact
| Fact | Gemini 4 Argon | Claude Opus 5.5 |
|---|---|---|
| Context window | 1.05M tokens | 1M tokens |
| Reads images | Yes | Yes |
| PDFs | Whole file | Whole file |
| Reasoning | Yes | Yes |
| API price (October 2026) | $4.00 in / $20.00 out per million tokens | $4.00 in / $20.00 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0300 | $0.0300 |
| A $10 top-up adds | 50 messages | 50 messages |
| Where a message goes | Sent to Google directly. | Sent to Anthropic directly. |
| If the provider fails | If Google fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Gemini 4 Argon through OpenRouter instead. | If Anthropic fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Claude Opus 5.5 through OpenRouter instead. |
| Anthropic's safety fallback | Doesn't apply | Anthropic's safety system can pass a Claude Opus 5.5 message to another Claude model. The reply then names the model that answered and says what you were charged for. |
Gemini 4 Argon or Claude Opus 5.5?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
On the facts llmwise keeps, Gemini 4 Argon and Claude Opus 5.5 are level: same count, same files, same context. Pick the one whose answers you prefer.
Each model's page, the families, and other pairs
Gemini 4 Argon vs Claude Opus 5.5 is one pair of models. The page below covers the whole families.
- Gemini 4 Argon: price, limits and messages on every plan
- Claude Opus 5.5: price, limits and messages on every plan
- Claude vs Gemini
- Gemini 4 Argon vs Gemini 3.1 Pro (preview)
- Gemini 4 Argon vs GPT-6 Astra
- Gemini 4 Argon vs GPT-6.1 Sol
- Claude Fable 5.1 vs Claude Opus 5.5
- Claude Opus 5.5 vs Claude Sonnet 5
- Claude Opus 5.5 vs Claude Sonnet 5.5
- Every model-vs-model page
Gemini 4 Argon is a Gemini model; Claude Opus 5.5 is a Claude model.
Questions
Is Gemini 4 Argon or Claude Opus 5.5 cheaper in llmwise?
They cost the same in llmwise: up to 62 messages a month on Pro on either. Every paid plan's monthly allowance is shared by the models on it, so each count is the most you get if it all goes to that model.
Can I try Gemini 4 Argon and Claude Opus 5.5 for free?
Neither is in the free trial of 5 messages: both need a paid plan, from Plus.
Which has the bigger context window, Gemini 4 Argon or Claude Opus 5.5?
Gemini 4 Argon: 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 Gemini 4 Argon and Claude Opus 5.5 in the same chat?
Yes. Pick Gemini 4 Argon for one message and Claude Opus 5.5 for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, Gemini 4 Argon or Claude Opus 5.5?
On the same 50 prompts, run on October 15, 2026, Gemini 4 Argon passed 47 and Claude Opus 5.5 passed 49. The table on this page has each job, and every reply is published.
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.