Model vs model
GPT-6 Sol vs Gemini 3.8 Flash
GPT-6 Sol and Gemini 3.8 Flash 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 GPT-6 Sol page, OpenRouter's Gemini 3.8 Flash page. Updated .
Short answer
Gemini 3.8 Flash gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for GPT-6 Sol. Beyond that, they read the same files and neither is easier to try. In our test runs, GPT-6 Sol passed 45 of the 50 prompts both answered and Gemini 3.8 Flash 46; 5 prompts split them, most on writing (4 to 3).
GPT-6 Sol vs Gemini 3.8 Flash, prompt by prompt
Every prompt GPT-6 Sol and Gemini 3.8 Flash 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 43, only GPT-6 Sol passed 2, only Gemini 3.8 Flash passed 3, and neither passed 2. GPT-6 Sol answered sooner on 37 of the 50 and Gemini 3.8 Flash on 9; the rest were within 10% of each other. The 50 replies cost $0.1297 on GPT-6 Sol and $0.0644 on Gemini 3.8 Flash: 2.0× less on Gemini 3.8 Flash.
The 5 prompts only one of GPT-6 Sol and Gemini 3.8 Flash passed
A product announcement with five rules (writing): GPT-6 Sol passed and Gemini 3.8 Flash didn't. GPT-6 Sol: Graded 4.7 of 5 on average (lowest 4). Gemini 3.8 Flash: Graded 3.7 of 5 on average (lowest 3).
An article in three bullets (summarization): Gemini 3.8 Flash passed and GPT-6 Sol didn't. GPT-6 Sol: Graded 4.0 of 5 on average (lowest 3); but 66 words, over the 60 allowed. Gemini 3.8 Flash: Graded 4.3 of 5 on average (lowest 4).
Correlation between ad spend and sign-ups (data analysis): GPT-6 Sol passed and Gemini 3.8 Flash didn't. GPT-6 Sol: Final answer 0.97: right. Gemini 3.8 Flash: Final answer 0.91; expected 0.97.
A late order (customer support): Gemini 3.8 Flash passed and GPT-6 Sol didn't. GPT-6 Sol: Graded 3.7 of 5 on average (lowest 1). Gemini 3.8 Flash: Graded 4.7 of 5 on average (lowest 4).
Idioms into natural Japanese (translation): Gemini 3.8 Flash passed and GPT-6 Sol didn't. GPT-6 Sol: Back-translation chrF 0.40 (pass at 0.4); reads back too far from the original. Gemini 3.8 Flash: Back-translation chrF 0.44 (pass at 0.4).
Job by job, the widest gaps first
Translation: GPT-6 Sol passed 4 of 5 and Gemini 3.8 Flash 5 of 5. Their median waits were close, 3.2 s against 3.0 s. Gemini 3.8 Flash cost 3.8× less, $0.0140 against $0.0037 for the 5 replies. Their replies ran to about the same length.
Summarization: GPT-6 Sol passed 4 of 5 and Gemini 3.8 Flash 5 of 5. GPT-6 Sol answered 1.8× sooner at the median, 2.0 s against 3.7 s. Gemini 3.8 Flash cost 2.9× less, $0.0110 against $0.0038 for the 5 replies. Their replies ran to about the same length.
Customer support: GPT-6 Sol passed 3 of 5 and Gemini 3.8 Flash 4 of 5. GPT-6 Sol answered 1.1× sooner at the median, 3.2 s against 3.7 s. Gemini 3.8 Flash cost 1.8× less, $0.0146 against $0.0082 for the 5 replies. Gemini 3.8 Flash's replies ran 58% longer, in tokens of reply, thinking not counted.
Writing: GPT-6 Sol passed 4 of 5 and Gemini 3.8 Flash 3 of 5. GPT-6 Sol answered 1.1× sooner at the median, 3.5 s against 3.9 s. Gemini 3.8 Flash cost 1.7× less, $0.0113 against $0.0066 for the 5 replies. Gemini 3.8 Flash's replies ran 31% longer, in tokens of reply, thinking not counted.
Data analysis: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 4 of 5. GPT-6 Sol answered 1.9× sooner at the median, 2.8 s against 5.4 s. Gemini 3.8 Flash cost 1.2× less, $0.0169 against $0.0138 for the 5 replies. Gemini 3.8 Flash's replies ran 439% longer, in tokens of reply, thinking not counted.
SQL: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 5 of 5. GPT-6 Sol answered 2.7× sooner at the median, 1.3 s against 3.7 s. Gemini 3.8 Flash cost 2.8× less, $0.0104 against $0.0037 for the 5 replies. Gemini 3.8 Flash's replies ran 10% longer, in tokens of reply, thinking not counted.
Coding: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 5 of 5. Gemini 3.8 Flash answered 1.1× sooner at the median, 4.8 s against 4.2 s. Gemini 3.8 Flash cost 2.7× less, $0.0262 against $0.0098 for the 5 replies. Gemini 3.8 Flash's replies ran 88% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 5 of 5. GPT-6 Sol answered 2.8× sooner at the median, 1.1 s against 3.1 s. Gemini 3.8 Flash cost 2.4× less, $0.0081 against $0.0033 for the 5 replies. Gemini 3.8 Flash's replies ran 39% longer, in tokens of reply, thinking not counted.
Agents and tool use: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 5 of 5. GPT-6 Sol answered 2.3× sooner at the median, 1.9 s against 4.4 s. Gemini 3.8 Flash cost 1.9× less, $0.0081 against $0.0043 for the 5 replies. Gemini 3.8 Flash's replies ran 19% longer, in tokens of reply, thinking not counted.
Math: GPT-6 Sol passed 5 of 5 and Gemini 3.8 Flash 5 of 5. GPT-6 Sol answered 2.2× sooner at the median, 2.2 s against 4.7 s. Gemini 3.8 Flash cost 1.3× less, $0.0090 against $0.0071 for the 5 replies. Gemini 3.8 Flash's replies ran 128% 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 | GPT-6 Sol, 1.3×took 3.3 s and 4.2 s | Gemini 3.8 Flash, 3.3×cost $0.0028 and $0.0009 |
| Parse a duration like “1h 30m” | Both passed | Gemini 3.8 Flash, 2.1×took 4.8 s and 2.3 s | Gemini 3.8 Flash, 4.1×cost $0.0042 and $0.0010 |
| Merge overlapping intervals | Both passed | GPT-6 Sol, 2.3×took 1.7 s and 3.8 s | Gemini 3.8 Flash, 1.8×cost $0.0022 and $0.0012 |
| Evaluate an arithmetic expression, no eval | Both passed | Gemini 3.8 Flash, 1.4×took 9.7 s and 6.7 s | Gemini 3.8 Flash, 2.0×cost $0.0089 and $0.0045 |
| Parse CSV with quoted fields | Both passed | Gemini 3.8 Flash, 1.8×took 8.9 s and 5.0 s | Gemini 3.8 Flash, 3.7×cost $0.0081 and $0.0022 |
| Announce a second bakery shop on LinkedIn | Both passed | GPT-6 Sol, 1.1×took 3.5 s and 3.9 s | Gemini 3.8 Flash, 2.9×cost $0.0027 and $0.0009 |
| Rewrite corporate jargon in plain words | Neither passed | Gemini 3.8 Flash, 1.6×took 5.0 s and 3.1 s | Gemini 3.8 Flash, 5.2×cost $0.0033 and $0.0006 |
| Decline a meeting and offer two times | Both passed | GPT-6 Sol, 2.6×took 1.3 s and 3.5 s | Gemini 3.8 Flash, 1.8×cost $0.0014 and $0.0008 |
| A product announcement with five rules | Only GPT-6 Sol | GPT-6 Sol, 4.7×took 1.6 s and 7.6 s | GPT-6 Sol, 2.2×cost $0.0014 and $0.0031 |
| Argue both sides of free buses | Both passed | GPT-6 Sol, 1.2×took 4.2 s and 5.2 s | Gemini 3.8 Flash, 2.2×cost $0.0025 and $0.0011 |
| A discount, then sales tax | Both passed | GPT-6 Sol, 1.5×took 1.7 s and 2.5 s | Gemini 3.8 Flash, 1.9×cost $0.0013 and $0.0007 |
| Pens at 3 for $4 | Both passed | GPT-6 Sol, 1.4×took 3.3 s and 4.7 s | Gemini 3.8 Flash, 1.5×cost $0.0024 and $0.0017 |
| Compound interest over three years | Both passed | GPT-6 Sol, 1.5×took 1.4 s and 2.1 s | Gemini 3.8 Flash, 1.6×cost $0.0014 and $0.0009 |
| Four-digit numbers whose digits sum to 9 | Both passed | GPT-6 Sol, 1.9×took 2.5 s and 4.7 s | GPT-6 Sol, 1.1×cost $0.0019 and $0.0022 |
| The highest of three dice is a 5 | Both passed | GPT-6 Sol, 2.2×took 2.2 s and 4.9 s | Gemini 3.8 Flash, 1.1×cost $0.0020 and $0.0018 |
| An article in three bullets | Only Gemini 3.8 Flash | GPT-6 Sol, 1.8×took 2.0 s and 3.7 s | Gemini 3.8 Flash, 2.8×cost $0.0020 and $0.0007 |
| An email thread in one sentence | Both passed | GPT-6 Sol, 1.9×took 2.0 s and 3.8 s | Gemini 3.8 Flash, 2.6×cost $0.0014 and $0.0005 |
| Decisions and action items from a meeting | Both passed | Closetook 3.5 s and 3.2 s | Gemini 3.8 Flash, 3.6×cost $0.0034 and $0.0009 |
| A quarterly memo for the CEO | Both passed | GPT-6 Sol, 1.5×took 2.6 s and 4.0 s | Gemini 3.8 Flash, 2.7×cost $0.0024 and $0.0009 |
| A study with a negative result | Both passed | GPT-6 Sol, 2.2×took 1.7 s and 3.6 s | Gemini 3.8 Flash, 2.6×cost $0.0017 and $0.0007 |
| The region with the most revenue | Both passed | GPT-6 Sol, 2.6×took 2.8 s and 7.4 s | GPT-6 Sol, 1.4×cost $0.0026 and $0.0038 |
| Average order value in August | Both passed | GPT-6 Sol, 1.6×took 2.8 s and 4.4 s | Gemini 3.8 Flash, 1.6×cost $0.0025 and $0.0016 |
| Revenue change from July to August | Both passed | GPT-6 Sol, 2.4×took 2.8 s and 6.6 s | GPT-6 Sol, 1.5×cost $0.0025 and $0.0037 |
| A median, filtered two ways | Both passed | GPT-6 Sol, 1.4×took 2.5 s and 3.5 s | Gemini 3.8 Flash, 2.3×cost $0.0024 and $0.0010 |
| Correlation between ad spend and sign-ups | Only GPT-6 Sol | Gemini 3.8 Flash, 1.2×took 6.6 s and 5.4 s | Gemini 3.8 Flash, 1.9×cost $0.0069 and $0.0037 |
| A late order | Only Gemini 3.8 Flash | Closetook 3.2 s and 3.1 s | Gemini 3.8 Flash, 2.7×cost $0.0025 and $0.0009 |
| A return inside the window | Both passed | GPT-6 Sol, 2.0×took 1.5 s and 2.9 s | Gemini 3.8 Flash, 2.0×cost $0.0017 and $0.0009 |
| A frustrated customer | Neither passed | Gemini 3.8 Flash, 1.6×took 5.9 s and 3.7 s | Gemini 3.8 Flash, 4.0×cost $0.0043 and $0.0011 |
| A refund request outside the window | Both passed | GPT-6 Sol, 1.9×took 3.0 s and 5.9 s | GPT-6 Sol, 1.2×cost $0.0025 and $0.0029 |
| A message with a planted instruction | Both passed | GPT-6 Sol, 1.6×took 4.4 s and 7.3 s | Gemini 3.8 Flash, 1.5×cost $0.0037 and $0.0025 |
| A delivery message into Spanish | Both passed | GPT-6 Sol, 1.2×took 3.2 s and 3.7 s | Gemini 3.8 Flash, 3.3×cost $0.0026 and $0.0008 |
| A product description into French | Both passed | Closetook 2.1 s and 2.2 s | Gemini 3.8 Flash, 2.5×cost $0.0019 and $0.0008 |
| A meeting note into German | Both passed | Gemini 3.8 Flash, 1.7×took 5.0 s and 3.0 s | Gemini 3.8 Flash, 5.5×cost $0.0035 and $0.0006 |
| Idioms into natural Japanese | Only Gemini 3.8 Flash | GPT-6 Sol, 2.0×took 2.4 s and 4.7 s | Gemini 3.8 Flash, 2.6×cost $0.0021 and $0.0008 |
| A lease clause into Brazilian Portuguese | Both passed | Gemini 3.8 Flash, 2.3×took 4.6 s and 2.0 s | Gemini 3.8 Flash, 5.1×cost $0.0040 and $0.0008 |
| Customers in one country | Both passed | GPT-6 Sol, 2.8×took 1.1 s and 3.1 s | Gemini 3.8 Flash, 2.5×cost $0.0012 and $0.0005 |
| Count orders by status | Both passed | GPT-6 Sol, 3.5×took 1.1 s and 3.7 s | Gemini 3.8 Flash, 2.6×cost $0.0012 and $0.0005 |
| Revenue by category | Both passed | GPT-6 Sol, 2.3×took 1.3 s and 3.0 s | Gemini 3.8 Flash, 2.4×cost $0.0018 and $0.0008 |
| Every customer, even those without orders | Both passed | GPT-6 Sol, 2.6×took 1.4 s and 3.7 s | Gemini 3.8 Flash, 2.4×cost $0.0018 and $0.0008 |
| Monthly revenue with a running total | Both passed | Closetook 4.5 s and 4.7 s | Gemini 3.8 Flash, 3.5×cost $0.0043 and $0.0012 |
| A fact from one section | Both passed | GPT-6 Sol, 2.8×took 1.1 s and 3.1 s | Gemini 3.8 Flash, 2.5×cost $0.0015 and $0.0006 |
| Core hours and start times | Both passed | GPT-6 Sol, 2.6×took 1.1 s and 2.9 s | Gemini 3.8 Flash, 2.4×cost $0.0016 and $0.0006 |
| Two sections in one answer | Both passed | GPT-6 Sol, 2.6×took 1.2 s and 3.1 s | Gemini 3.8 Flash, 2.5×cost $0.0016 and $0.0006 |
| A later amendment changes the answer | Both passed | GPT-6 Sol, 2.0×took 2.0 s and 4.1 s | Gemini 3.8 Flash, 2.3×cost $0.0020 and $0.0009 |
| A question the handbook doesn't answer | Both passed | GPT-6 Sol, 3.1×took 0.9 s and 2.9 s | Gemini 3.8 Flash, 2.6×cost $0.0014 and $0.0006 |
| Pick the tool and work out the date | Both passed | Gemini 3.8 Flash, 1.1×took 2.2 s and 1.9 s | Gemini 3.8 Flash, 3.1×cost $0.0016 and $0.0005 |
| Convert a currency | Both passed | GPT-6 Sol, 2.4×took 1.8 s and 4.4 s | Gemini 3.8 Flash, 1.6×cost $0.0012 and $0.0008 |
| Book a meeting from a sentence | Both passed | GPT-6 Sol, 3.4×took 1.9 s and 6.3 s | Gemini 3.8 Flash, 1.8×cost $0.0021 and $0.0012 |
| Search, but don't book | Both passed | GPT-6 Sol, 5.7×took 1.1 s and 6.3 s | Gemini 3.8 Flash, 1.5×cost $0.0014 and $0.0009 |
| Two calls with a unit conversion | Both passed | GPT-6 Sol, 1.4×took 2.8 s and 3.9 s | Gemini 3.8 Flash, 1.9×cost $0.0018 and $0.0010 |
GPT-6 Sol vs Gemini 3.8 Flash in our test runs
GPT-6 Sol and Gemini 3.8 Flash 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 | GPT-6 Sol | 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 | 4 of 5 | 5 of 5 |
| Data analysis | 5 of 5 | 4 of 5 |
| Customer support | 3 of 5 | 4 of 5 |
| Translation | 4 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 | 45 of 50 · 1 message each · $0.0026 a reply | 46 of 50 · 1 message each · $0.0013 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, writing: both replies to a prompt only one of them passed.
A hard prompt: “A product announcement with five rules”, in full.
GPT-6 Sol
Passed: Graded 4.7 of 5 on average (lowest 4).
Meet the Nordvik 2 desk lamp, designed to put light where you need it. Choose from five dimming steps, turn the arm through 270 degrees, and charge it via USB-C. Priced at €79, it ships on 1 December. Where will you put yours?
406 tokens in, 63 out · 1.6 s · $0.0014 · 1 message on Pro · answered by openai/gpt-6-sol via OpenAI ·
Gemini 3.8 Flash
Failed: Graded 3.7 of 5 on average (lowest 3).
Meet the Nordvik 2 desk lamp, designed to bring flexible, modern illumination to your workspace. Its adaptable arm turns 270 degrees to direct light precisely where you need it, while intuitive controls allow you to dim the light in five steps for optimal focus. Built for clean and efficient setups, it charges from USB-C. The Nordvik 2 costs €79, and orders will begin shipping on 1 December. Are you ready to upgrade your desk lighting?
435 tokens in, 751 out (648 of them reasoning) · 7.6 s · $0.0031 · 1 message on Pro · answered by google/gemini-3.8-flash via Google ·
GPT-6 Sol and Gemini 3.8 Flash on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | GPT-6 Sol | Gemini 3.8 Flash |
|---|---|---|---|
| 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
Gemini 3.8 Flash gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for GPT-6 Sol.
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
Both are in the free trial.
Where messages go
GPT-6 Sol: Sent to OpenAI directly. Gemini 3.8 Flash: Sent to Google directly.
Fact by fact
| Fact | GPT-6 Sol | Gemini 3.8 Flash |
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Reads images | Yes | Yes |
| PDFs | Whole file | Whole file |
| Reasoning | Yes | Yes |
| API price (September 2026) | $2.00 in / $10.00 out per million tokens | $0.75 in / $3.75 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0150 | $0.0056 |
| A $10 top-up adds | 100 messages | 200 messages |
| Where a message goes | Sent to OpenAI directly. | Sent to Google directly. |
| If the provider fails | If OpenAI fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to GPT-6 Sol 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 3.8 Flash through OpenRouter instead. |
| Anthropic's safety fallback | Doesn't apply | Doesn't apply |
GPT-6 Sol or Gemini 3.8 Flash?
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 3.8 Flash: more messages for the money, up to 250 messages a month on Pro.
Each model's page, the families, and other pairs
GPT-6 Sol vs Gemini 3.8 Flash is one pair of models. The page below covers the whole families.
- GPT-6 Sol: price, limits and messages on every plan
- Gemini 3.8 Flash: price, limits and messages on every plan
- ChatGPT vs Gemini
- Claude Opus 5.5 vs GPT-6 Sol
- GPT-6 Astra vs GPT-6 Sol
- GPT-6 Sol vs GPT-6 Luna
- Gemini 3.8 Flash vs DeepSeek V4.1 Flash
- Claude Sonnet 5 vs Gemini 3.8 Flash
- Claude Haiku 4.5 vs Gemini 3.8 Flash
- Every model-vs-model page
GPT-6 Sol is a GPT model; Gemini 3.8 Flash is a Gemini model.
Questions
Is GPT-6 Sol or Gemini 3.8 Flash cheaper in llmwise?
Gemini 3.8 Flash gets twice as many messages: up to 250 messages a month on Pro, against up to 125 messages a month for GPT-6 Sol. 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 GPT-6 Sol and Gemini 3.8 Flash for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, GPT-6 Sol or Gemini 3.8 Flash?
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 GPT-6 Sol and Gemini 3.8 Flash in the same chat?
Yes. Pick GPT-6 Sol for one message and Gemini 3.8 Flash for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, GPT-6 Sol or Gemini 3.8 Flash?
On the same 50 prompts, run on September 27, 2026, GPT-6 Sol passed 45 and Gemini 3.8 Flash passed 46. 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.