Model vs model
Gemini 4 Argon vs Gemini 3.1 Pro (preview)
Gemini 4 Argon and Gemini 3.1 Pro (preview) 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 Gemini 3.1 Pro page. Updated .
Short answer
Gemini 3.1 Pro (preview) gets twice as many messages: up to 125 messages a month on Pro, against up to 62 messages a month for Gemini 4 Argon. Beyond that, they read the same files and neither is easier to try. In our test runs, Gemini 4 Argon passed 47 of the 50 prompts both answered and Gemini 3.1 Pro (preview) 49; 2 prompts split them, most on customer support (3 to 5).
Gemini 4 Argon vs Gemini 3.1 Pro (preview), prompt by prompt
Every prompt Gemini 4 Argon and Gemini 3.1 Pro (preview) 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 Gemini 3.1 Pro (preview) passed 2, and neither passed 1. Gemini 4 Argon answered sooner on 44 of the 50 and Gemini 3.1 Pro (preview) on 3; the rest were within 10% of each other. The 50 replies cost $0.0788 on Gemini 4 Argon and $0.5334 on Gemini 3.1 Pro (preview): 6.8× less on Gemini 4 Argon.
The 2 prompts only one of Gemini 4 Argon and Gemini 3.1 Pro (preview) passed
A late order (customer support): Gemini 3.1 Pro (preview) passed and Gemini 4 Argon didn't. Gemini 4 Argon: Graded 3.7 of 5 on average (lowest 2). Gemini 3.1 Pro (preview): Graded 4.7 of 5 on average (lowest 4).
A frustrated customer (customer support): Gemini 3.1 Pro (preview) 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. Gemini 3.1 Pro (preview): 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 Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 1.8× sooner at the median, 5.0 s against 8.7 s. Gemini 4 Argon cost 6.8× less, $0.0078 against $0.0529 for the 5 replies. Gemini 4 Argon's replies ran 14% longer, in tokens of reply, thinking not counted.
Translation: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 3.2× sooner at the median, 3.2 s against 10.3 s. Gemini 4 Argon cost 11.3× less, $0.0062 against $0.0699 for the 5 replies. Their replies ran to about the same length.
Coding: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 3.0× sooner at the median, 3.5 s against 10.3 s. Gemini 4 Argon cost 8.0× less, $0.0122 against $0.0973 for the 5 replies. Their replies ran to about the same length.
Summarization: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 2.7× sooner at the median, 2.9 s against 8.0 s. Gemini 4 Argon cost 7.2× less, $0.0061 against $0.0441 for the 5 replies. Gemini 4 Argon's replies ran 20% longer, in tokens of reply, thinking not counted.
Writing: Gemini 4 Argon passed 4 of 5 and Gemini 3.1 Pro (preview) 4 of 5. Gemini 4 Argon answered 1.6× sooner at the median, 5.7 s against 9.1 s. Gemini 4 Argon cost 6.6× less, $0.0070 against $0.0459 for the 5 replies. Gemini 4 Argon's replies ran 13% longer, in tokens of reply, thinking not counted.
Math: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 1.9× sooner at the median, 4.4 s against 8.3 s. Gemini 4 Argon cost 6.5× less, $0.0077 against $0.0501 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 14% longer, in tokens of reply, thinking not counted.
SQL: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 2.7× sooner at the median, 2.8 s against 7.4 s. Gemini 4 Argon cost 6.3× less, $0.0061 against $0.0386 for the 5 replies. Gemini 4 Argon's replies ran 18% longer, in tokens of reply, thinking not counted.
Data analysis: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 1.3× sooner at the median, 6.9 s against 8.6 s. Gemini 4 Argon cost 5.4× less, $0.0142 against $0.0773 for the 5 replies. Gemini 4 Argon's replies ran 17% longer, in tokens of reply, thinking not counted.
Agents and tool use: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 1.5× sooner at the median, 3.5 s against 5.3 s. Gemini 4 Argon cost 5.3× less, $0.0054 against $0.0284 for the 5 replies. Gemini 3.1 Pro (preview)'s replies ran 50% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: Gemini 4 Argon passed 5 of 5 and Gemini 3.1 Pro (preview) 5 of 5. Gemini 4 Argon answered 1.6× sooner at the median, 3.4 s against 5.6 s. Gemini 4 Argon cost 4.8× less, $0.0061 against $0.0290 for the 5 replies. Gemini 4 Argon's replies ran 178% 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 | Gemini 4 Argon, 2.1×took 2.9 s and 6.0 s | Gemini 4 Argon, 4.8×cost $0.0012 and $0.0056 |
| Parse a duration like “1h 30m” | Both passed | Gemini 4 Argon, 3.0×took 3.5 s and 10.3 s | Gemini 4 Argon, 9.6×cost $0.0018 and $0.0172 |
| Merge overlapping intervals | Both passed | Gemini 4 Argon, 2.5×took 3.4 s and 8.6 s | Gemini 4 Argon, 6.1×cost $0.0017 and $0.0103 |
| Evaluate an arithmetic expression, no eval | Both passed | Gemini 4 Argon, 2.1×took 9.7 s and 20.6 s | Gemini 4 Argon, 7.0×cost $0.0050 and $0.0351 |
| Parse CSV with quoted fields | Both passed | Gemini 4 Argon, 4.1×took 5.0 s and 20.6 s | Gemini 4 Argon, 11.5×cost $0.0025 and $0.0291 |
| Announce a second bakery shop on LinkedIn | Both passed | Gemini 4 Argon, 1.7×took 5.7 s and 9.5 s | Gemini 4 Argon, 7.2×cost $0.0016 and $0.0113 |
| Rewrite corporate jargon in plain words | Both passed | Gemini 4 Argon, 2.1×took 4.1 s and 8.8 s | Gemini 4 Argon, 9.5×cost $0.0011 and $0.0101 |
| Decline a meeting and offer two times | Both passed | Gemini 4 Argon, 1.7×took 3.6 s and 6.2 s | Gemini 4 Argon, 4.6×cost $0.0013 and $0.0058 |
| A product announcement with five rules | Both passed | Closetook 8.9 s and 9.2 s | Gemini 4 Argon, 7.1×cost $0.0013 and $0.0095 |
| Argue both sides of free buses | Neither passed | Gemini 4 Argon, 1.3×took 7.0 s and 9.1 s | Gemini 4 Argon, 5.2×cost $0.0018 and $0.0092 |
| A discount, then sales tax | Both passed | Gemini 3.1 Pro (preview), 1.1×took 4.1 s and 3.6 s | Gemini 4 Argon, 3.4×cost $0.0012 and $0.0042 |
| Pens at 3 for $4 | Both passed | Gemini 4 Argon, 2.2×took 4.4 s and 9.6 s | Gemini 4 Argon, 8.0×cost $0.0015 and $0.0121 |
| Compound interest over three years | Both passed | Gemini 4 Argon, 1.5×took 4.2 s and 6.2 s | Gemini 4 Argon, 7.0×cost $0.0014 and $0.0099 |
| Four-digit numbers whose digits sum to 9 | Both passed | Gemini 4 Argon, 2.1×took 4.5 s and 9.6 s | Gemini 4 Argon, 7.3×cost $0.0020 and $0.0150 |
| The highest of three dice is a 5 | Both passed | Gemini 4 Argon, 1.7×took 4.9 s and 8.3 s | Gemini 4 Argon, 5.8×cost $0.0016 and $0.0090 |
| An article in three bullets | Both passed | Gemini 4 Argon, 2.9×took 2.8 s and 8.0 s | Gemini 4 Argon, 7.1×cost $0.0012 and $0.0088 |
| An email thread in one sentence | Both passed | Gemini 4 Argon, 2.2×took 2.9 s and 6.3 s | Gemini 4 Argon, 6.1×cost $0.0010 and $0.0058 |
| Decisions and action items from a meeting | Both passed | Gemini 4 Argon, 2.6×took 2.9 s and 7.6 s | Gemini 4 Argon, 6.1×cost $0.0013 and $0.0081 |
| A quarterly memo for the CEO | Both passed | Gemini 4 Argon, 3.2×took 3.5 s and 11.2 s | Gemini 4 Argon, 9.3×cost $0.0015 and $0.0139 |
| A study with a negative result | Both passed | Gemini 4 Argon, 2.6×took 3.2 s and 8.2 s | Gemini 4 Argon, 6.7×cost $0.0011 and $0.0075 |
| The region with the most revenue | Both passed | Closetook 8.4 s and 8.5 s | Gemini 4 Argon, 5.6×cost $0.0021 and $0.0117 |
| Average order value in August | Both passed | Gemini 4 Argon, 1.5×took 5.6 s and 8.6 s | Gemini 4 Argon, 4.8×cost $0.0027 and $0.0130 |
| Revenue change from July to August | Both passed | Gemini 4 Argon, 1.4×took 6.5 s and 9.0 s | Gemini 4 Argon, 3.8×cost $0.0036 and $0.0135 |
| A median, filtered two ways | Both passed | Closetook 6.9 s and 7.1 s | Gemini 4 Argon, 4.9×cost $0.0017 and $0.0082 |
| Correlation between ad spend and sign-ups | Both passed | Gemini 4 Argon, 2.0×took 8.4 s and 16.5 s | Gemini 4 Argon, 7.5×cost $0.0041 and $0.0310 |
| A late order | Only Gemini 3.1 Pro (preview) | Gemini 4 Argon, 1.8×took 5.0 s and 8.7 s | Gemini 4 Argon, 7.4×cost $0.0017 and $0.0125 |
| A return inside the window | Both passed | Gemini 4 Argon, 1.9×took 3.7 s and 6.9 s | Gemini 4 Argon, 5.5×cost $0.0014 and $0.0076 |
| A frustrated customer | Only Gemini 3.1 Pro (preview) | Gemini 4 Argon, 1.7×took 5.8 s and 9.8 s | Gemini 4 Argon, 6.2×cost $0.0018 and $0.0110 |
| A refund request outside the window | Both passed | Gemini 3.1 Pro (preview), 2.0×took 14.9 s and 7.4 s | Gemini 4 Argon, 7.2×cost $0.0014 and $0.0103 |
| A message with a planted instruction | Both passed | Gemini 4 Argon, 2.3×took 4.5 s and 10.6 s | Gemini 4 Argon, 7.8×cost $0.0015 and $0.0116 |
| A delivery message into Spanish | Both passed | Gemini 4 Argon, 3.7×took 3.2 s and 11.8 s | Gemini 4 Argon, 12.3×cost $0.0013 and $0.0157 |
| A product description into French | Both passed | Gemini 4 Argon, 3.8×took 2.4 s and 9.1 s | Gemini 4 Argon, 11.7×cost $0.0012 and $0.0141 |
| A meeting note into German | Both passed | Gemini 4 Argon, 1.9×took 6.8 s and 13.0 s | Gemini 4 Argon, 13.7×cost $0.0012 and $0.0158 |
| Idioms into natural Japanese | Both passed | Gemini 4 Argon, 3.3×took 3.2 s and 10.3 s | Gemini 4 Argon, 10.7×cost $0.0011 and $0.0118 |
| A lease clause into Brazilian Portuguese | Both passed | Gemini 4 Argon, 1.3×took 6.1 s and 8.1 s | Gemini 4 Argon, 8.6×cost $0.0015 and $0.0125 |
| Customers in one country | Both passed | Gemini 4 Argon, 2.5×took 2.0 s and 4.9 s | Gemini 4 Argon, 3.3×cost $0.0009 and $0.0029 |
| Count orders by status | Both passed | Gemini 4 Argon, 2.4×took 2.1 s and 5.0 s | Gemini 4 Argon, 4.6×cost $0.0008 and $0.0039 |
| Revenue by category | Both passed | Gemini 4 Argon, 1.5×took 5.1 s and 7.4 s | Gemini 4 Argon, 5.9×cost $0.0012 and $0.0074 |
| Every customer, even those without orders | Both passed | Gemini 4 Argon, 2.8×took 2.8 s and 7.9 s | Gemini 4 Argon, 7.0×cost $0.0013 and $0.0089 |
| Monthly revenue with a running total | Both passed | Gemini 4 Argon, 3.1×took 3.5 s and 11.1 s | Gemini 4 Argon, 8.3×cost $0.0019 and $0.0155 |
| A fact from one section | Both passed | Gemini 4 Argon, 1.6×took 3.4 s and 5.3 s | Gemini 4 Argon, 4.4×cost $0.0010 and $0.0045 |
| Core hours and start times | Both passed | Gemini 4 Argon, 1.3×took 4.3 s and 5.8 s | Gemini 4 Argon, 4.7×cost $0.0011 and $0.0052 |
| Two sections in one answer | Both passed | Gemini 4 Argon, 2.2×took 2.5 s and 5.6 s | Gemini 4 Argon, 4.4×cost $0.0011 and $0.0047 |
| A later amendment changes the answer | Both passed | Gemini 4 Argon, 1.5×took 5.7 s and 8.6 s | Gemini 4 Argon, 5.2×cost $0.0019 and $0.0099 |
| A question the handbook doesn't answer | Both passed | Gemini 4 Argon, 3.0×took 1.9 s and 5.6 s | Gemini 4 Argon, 4.7×cost $0.0010 and $0.0046 |
| Pick the tool and work out the date | Both passed | Gemini 3.1 Pro (preview), 1.3×took 5.4 s and 4.3 s | Gemini 4 Argon, 5.3×cost $0.0009 and $0.0048 |
| Convert a currency | Both passed | Gemini 4 Argon, 2.1×took 2.6 s and 5.3 s | Gemini 4 Argon, 4.9×cost $0.0009 and $0.0044 |
| Book a meeting from a sentence | Both passed | Gemini 4 Argon, 1.5×took 4.9 s and 7.1 s | Gemini 4 Argon, 6.1×cost $0.0011 and $0.0068 |
| Search, but don't book | Both passed | Gemini 4 Argon, 1.5×took 3.2 s and 4.7 s | Gemini 4 Argon, 6.0×cost $0.0010 and $0.0061 |
| Two calls with a unit conversion | Both passed | Gemini 4 Argon, 2.0×took 3.5 s and 6.9 s | Gemini 4 Argon, 4.4×cost $0.0014 and $0.0063 |
Gemini 4 Argon vs Gemini 3.1 Pro (preview) in our test runs
Gemini 4 Argon and Gemini 3.1 Pro (preview) 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 | Gemini 3.1 Pro (preview) |
|---|---|---|
| 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 ·
Gemini 3.1 Pro
Passed: Graded 4.7 of 5 on average (lowest 4).
Hello, I apologize that your rain jacket hasn't arrived yet. Because standard delivery typically takes 3 to 5 business days, your order from 9 business days ago is currently delayed. I am checking with our shipping carrier right now to locate your package and will follow up with you as soon as I have an exact update on its whereabouts. Please rest assured that if your order ends up being more than 7 business days late past its expected delivery window, we will provide you with free express shipping on your next order. Thank you for your patience while we get this sorted out. Sam, Northwind support
550 tokens in, 948 out (817 of them reasoning) · 8.7 s · $0.0125 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google ·
Gemini 4 Argon and Gemini 3.1 Pro (preview) 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 | Gemini 3.1 Pro (preview) |
|---|---|---|---|
| Free | $0 | Not in the trial | Not in the trial |
| Plus | $10 a month | Up to 31 a month | Up to 62 a month |
| Pro | $20 a month | Up to 62 a month | Up to 125 a month |
| Max | $50 a month | Up to 200 a month | Up to 400 a month |
| Ultra | $100 a month | Up to 450 a month | Up to 900 a month |
| Studio | $200 a month | Up to 1,000 a month | Up to 2,000 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
Gemini 3.1 Pro (preview) gets twice as many messages: up to 125 messages a month on Pro, against up to 62 messages a month for Gemini 4 Argon.
Context window
Both take up to 1.05M tokens of context. 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
Both are Gemini models, served the same way. Sent to Google directly.
Fact by fact
| Fact | Gemini 4 Argon | Gemini 3.1 Pro (preview) |
|---|---|---|
| Context window | 1.05M tokens | 1.05M 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 | $2.00 in / $12.00 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0300 | $0.0164 |
| A $10 top-up adds | 50 messages | 100 messages |
| Where a message goes | Sent to Google directly. | Sent to Google 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 Google fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Gemini 3.1 Pro (preview) through OpenRouter instead. |
| Anthropic's safety fallback | Doesn't apply | Doesn't apply |
Gemini 4 Argon or Gemini 3.1 Pro (preview)?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
Pick Gemini 3.1 Pro (preview): more messages for the money, up to 125 messages a month on Pro.
Each model's page, the families, and other pairs
- Gemini 4 Argon: price, limits and messages on every plan
- Gemini 3.1 Pro: price, limits and messages on every plan
- Gemini 4 Argon vs Claude Opus 5.5
- Gemini 4 Argon vs GPT-6 Astra
- Gemini 4 Argon vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs Gemini 3.1 Pro (preview)
- Claude Opus 5.5 vs Gemini 3.1 Pro (preview)
- Claude Sonnet 5 vs Gemini 3.1 Pro (preview)
- Every model-vs-model page
Both are made by the same company, so they're served the same way.
Questions
Is Gemini 4 Argon or Gemini 3.1 Pro (preview) cheaper in llmwise?
Gemini 3.1 Pro (preview) gets twice as many messages: up to 125 messages a month on Pro, against up to 62 messages a month for Gemini 4 Argon. 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 Gemini 3.1 Pro (preview) 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 Gemini 3.1 Pro (preview)?
Neither: both take 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.
Can I use Gemini 4 Argon and Gemini 3.1 Pro (preview) in the same chat?
Yes. Pick Gemini 4 Argon for one message and Gemini 3.1 Pro (preview) 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 Gemini 3.1 Pro (preview)?
On the same 50 prompts, run on October 15, 2026, Gemini 4 Argon passed 47 and Gemini 3.1 Pro (preview) 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.