AI chat · Gemini
Chat with Gemini online
2 Gemini models in llmwise, 2 of them in the 5 free messages you get on sign-up. Gemini 3.1 Pro passed 49 of 50 of our test prompts, the most of any Gemini model.
A real answer from our test runs
Gemini 3.1 ProWrite a JavaScript function parseDuration(text) that returns the number of seconds in a duration written like "1h 30m", "45s", "2h", "1h5m10s" or "90m". The parts are h, m and s, each at most once and in that order, with optional spaces between them and around the whole. Return null for anything else, such as "", "1x", "5m 1h" or "h". Reply with the whole function in one ```javascript code block: plain JavaScript for Node.js 22, no imports, no TypeScript.
Gemini 3.1 Pro · passed our check · September 27, 2026
```javascript
function parseDuration(text) {
if (typeof text !== 'string' || text.trim() === '') {
return null;
}
const regex = /^\s*(?:(\d+)\s*h)?\s*(?:(\d+)\s*m)?\s*(?:(\d+)\s*s)?\s*$/;
const match = text.match(regex);
if (!match) {
return null;
}
const hours = match[1] ? parseInt(match[1], 10) : 0;
const minutes = match[2] ? parseInt(match[2], 10) : 0;
const seconds = match[3] ? parseInt(match[3], 10) : 0;
if (hours === 0 && minutes === 0 && seconds === 0 && !match[1] && !match[2] && !match[3]) {
return null;
}
return (hours * 3600) + (minutes * 60) + seconds;
}
```Ask Gemini 3.1 Pro your own question: it's in the 5 free messages you get on sign-up, no card.
Start freeFacts about other apps checked against Gemini subscriptions. Updated .
Short answer
Gemini 3.1 Pro passed the most of our test prompts, 49 of 50; Gemini 3.8 Flash 46 of 50. Gemini 3.1 Pro (preview) and Gemini 3.8 Flash are in the 5 free messages you get on sign-up.
The Gemini models in llmwise
Every Gemini model in llmwise: the free trial, Pro's count, a typical message at its API price, and our test results.
| Model | Free trial | On Pro | Typical message, API price | Our test prompts passed |
|---|---|---|---|---|
| Gemini 3.1 Pro (preview)Google | Yes | 125 a month | $0.0164 | 49 of 50 (19 of 20 hard) |
| Gemini 3.8 FlashGoogle | Yes | 250 a month | $0.0056 | 46 of 50 (18 of 20 hard) |
On Pro: the most messages a month on the model if the month goes to it alone, or a day's on an everyday model. The API price is a 4,000-token question with a 700-token answer at the model's list price as of September 2026; in llmwise you pay per message. Our tests: the 50 prompts of our test runs on September 27, 2026.
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.
Gemini, job by job
Prompts passed on each of our 10 jobs, 5 prompts a job.
| Job | Gemini 3.1 Pro | Gemini 3.8 Flash |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 4 of 5 | 3 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 5 of 5 | 5 of 5 |
| Data analysis | 5 of 5 | 4 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 |
When to pick which Gemini model
Among the Gemini models only: the one that passed the most of each job, and when others tie, the one that costs less.
Coding
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
Writing
Gemini 3.1 Pro, 4 of 5 passed (1 of 2 hard).
Math
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
Summarization
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
Data analysis
Gemini 3.1 Pro, 5 of 5 passed (2 of 2 hard).
Customer support
Gemini 3.1 Pro, 5 of 5 passed (2 of 2 hard).
Translation
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
SQL
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
RAG and answering from documents
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
Agents and tool use
Gemini 3.8 Flash, 5 of 5 passed (2 of 2 hard). Gemini 3.1 Pro passed as many; Gemini 3.8 Flash costs less.
Gemini on one prompt, side by side
The same hard data analysis prompt, “Correlation between ad spend and sign-ups”, sent to Gemini 3.1 Pro and Gemini 3.8 Flash: Gemini 3.1 Pro passed and Gemini 3.8 Flash failed.
The prompt: Correlation between ad spend and sign-ups (hard)
Here's weekly ad spend and sign-ups as CSV. What's the Pearson correlation coefficient between ad_spend and signups, to 2 decimal places? week,ad_spend,signups 1,500,42 2,800,55 3,650,49 4,1200,71 5,900,60 6,300,35 7,1100,64 8,700,58 Show your working briefly, then end with a line that says "Final answer: " followed by the answer alone.
Gemini 3.1 Pro
Passed: Final answer 0.97: right.
To calculate the Pearson correlation coefficient ($r$), we use the formula: $r = \frac{n(\sum xy) - (\sum x)(\sum y)}{\sqrt{[n\sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2]}}$ Given the data for ad_spend ($x$) and signups ($y$): - $n = 8$ - $\sum x = 500 + 800 + 650 + 1200 + 900 + 300 + 1100 + 700 = 6,150$ - $\sum y = 42 + 55 + 49 + 71 + 60 + 35 + 64 + 58 = 434$ - $\sum xy = (500 \times 42) + \dots + (700 \times 58) = 357,550$ - $\sum x^2 = (500^2) + \dots + (700^2) = 5,352,500$ - $\sum y^2 = (42^2) + \dots + (58^2) = 24,516$ Plugging these into the formula: Numerator: $8(357,550) - (6,150)(434) = 2,860,400 - 2,669,100 = 191,300$ Denominator $x$: $8(5,352,500) - (6,150)^2 = 42,820,000 - 37,822,500 = 4,997,500$ Denominator $y$: $8(24,516) - (434)^2 = 196,128 - 188,356 = 7,772$ $r = \frac{191,300}{\sqrt{4,997,500 \times 7,772}}$ $r = \frac{191,300}{\sqrt{38,840,570,000}}$ $r = \frac{191,300}{197,080.11} \approx 0.97067$ Final answer: 0.97505 tokens in, 2,496 out (1,908 of them reasoning) · 16.5 s · $0.0310 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google ·
Gemini 3.8 Flash
Failed: Final answer 0.91; expected 0.97.
Let $x$ represent `ad_spend` and $y$ represent `signups`. The number of data points is $n = 8$. **Data:** - $x = [500, 800, 650, 1200, 900, 300, 1100, 700]$ - $y = [42, 55, 49, 71, 60, 35, 64, 58]$ **Summary Calculations:** - $\sum x = 500 + 800 + 650 + 1200 + 900 + 300 + 1100 + 700 = 6150$ - $\sum y = 42 + 55 + 49 + 71 + 60 + 35 + 64 + 58 = 434$ - $\sum x^2 = 500^2 + 800^2 + 650^2 + 1200^2 + 900^2 + 300^2 + 1100^2 + 700^2 = 5,342,500$ - $\sum y^2 = 42^2 + 55^2 + 49^2 + 71^2 + 60^2 + 35^2 + 64^2 + 58^2 = 24,676$ - $\sum xy = (500)(42) + (800)(55) + (650)(49) + (1200)(71) + (900)(60) + (300)(35) + (1100)(64) + (700)(58)$ $= 21,000 + 44,000 + 31,850 + 85,200 + 54,000 + 10,500 + 70,400 + 40,600 = 357,550$ **Pearson Correlation Formula:** $$r = \frac{n\sum xy - (\sum x)(\sum y)}{\sqrt{[n\sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2]}}$$ - **Numerator:** $8(357,550) - (6150)(434) = 2,860,400 - 2,669,100 = 191,300$ - **Denominator:** $n\sum x^2 - (\sum x)^2 = 8(5,342,500) - 6150^2 = 42,740,000 - 37,822,500 = 4,917,500$ $n\sum y^2 - (\sum y)^2 = 8(24,676) - 434^2 = 197,408 - 188,356 = 9,052$ $\sqrt{4,917,500 \times 9,052} = \sqrt{44,513,210,000} \approx 210,981.54$ - **Correlation ($r$):** $r = \frac{191,300}{210,981.54} \approx 0.9067 \approx 0.91$ Final answer: 0.91505 tokens in, 887 out · 5.4 s · $0.0037 · 1 message on Pro · answered by google/gemini-3.8-flash via Google ·
Google's own app
llmwise isn't Google's app. Gemini, Google's own, has a free tier too; in its words: “Varying access to 3.1 Pro” (Gemini subscriptions, checked ).
Where your messages go
In llmwise, a message to Gemini goes to its maker, Google, or through OpenRouter when llmwise can't reach the maker directly. The Privacy Policy has the details.
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Questions
Can I chat with Gemini for free?
Yes, to try: Gemini 3.1 Pro (preview) and Gemini 3.8 Flash are in the 5 free messages you get when you sign up, once and with no card. The free-message box on this page, when it shows, is answered by GPT-6 Luna, not by Gemini.
Is this the official Gemini app?
No. llmwise isn't made by Google and isn't affiliated with it: it offers Google's Gemini models next to 6 other AI families, in one chat. Google's own app has a free tier too; in its words: “Varying access to 3.1 Pro” (Gemini subscriptions, checked September 28, 2026).
Which Gemini model should I use?
In our test runs on September 27, 2026, Gemini 3.1 Pro passed the most: 49 of 50 prompts. The cheapest per message, Gemini 3.8 Flash, passed 46 of 50. Start on the cheaper one and switch when an answer isn't good enough: the next model sees the whole chat.
Where do my Gemini messages go?
In llmwise, a message to Gemini goes to its maker, Google, or through OpenRouter when llmwise can't reach the maker directly.
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.