Model vs model
GPT-6 Sol vs Kimi K3
GPT-6 Sol and Kimi K3 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 Kimi K3 page. Updated .
Short answer
They cost the same in llmwise: up to 125 messages a month on Pro on either. Otherwise, only GPT-6 Sol reads a PDF as the whole file. In our test runs, GPT-6 Sol passed 45 of the 50 prompts both answered and Kimi K3 46; 7 prompts split them, most on summarization (4 to 3).
GPT-6 Sol vs Kimi K3, prompt by prompt
Every prompt GPT-6 Sol and Kimi K3 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 42, only GPT-6 Sol passed 3, only Kimi K3 passed 4, and neither passed 1. GPT-6 Sol answered sooner on 32 of the 50 and Kimi K3 on 11; the rest were within 10% of each other. The 50 replies cost $0.1297 on GPT-6 Sol and $0.1938 on Kimi K3: 1.5× less on GPT-6 Sol.
The 7 prompts only one of GPT-6 Sol and Kimi K3 passed
Rewrite corporate jargon in plain words (writing): Kimi K3 passed and GPT-6 Sol didn't. GPT-6 Sol: Graded 3.7 of 5 on average (lowest 3). Kimi K3: Graded 4.3 of 5 on average (lowest 4).
A product announcement with five rules (writing): GPT-6 Sol passed and Kimi K3 didn't. GPT-6 Sol: Graded 4.7 of 5 on average (lowest 4). Kimi K3: Graded 4.3 of 5 on average (lowest 4); but doesn't end with a question.
An email thread in one sentence (summarization): GPT-6 Sol passed and Kimi K3 didn't. GPT-6 Sol: Graded 5.0 of 5 on average (lowest 5). Kimi K3: Graded 5.0 of 5 on average (lowest 5); but 32 words, over the 30 allowed.
A late order (customer support): Kimi K3 passed and GPT-6 Sol didn't. GPT-6 Sol: Graded 3.7 of 5 on average (lowest 1). Kimi K3: Graded 4.7 of 5 on average (lowest 4).
A frustrated customer (customer support): Kimi K3 passed and GPT-6 Sol didn't. GPT-6 Sol: Graded 3.0 of 5 on average (lowest 2). Kimi K3: Graded 4.0 of 5 on average (lowest 3).
A refund request outside the window (customer support): GPT-6 Sol passed and Kimi K3 didn't. GPT-6 Sol: Graded 4.3 of 5 on average (lowest 4). Kimi K3: Graded 4.0 of 5 on average (lowest 2).
Idioms into natural Japanese (translation): Kimi K3 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. Kimi K3: Back-translation chrF 0.47 (pass at 0.4).
Job by job, the widest gaps first
Summarization: GPT-6 Sol passed 4 of 5 and Kimi K3 3 of 5. GPT-6 Sol answered 1.6× sooner at the median, 2.0 s against 3.4 s. GPT-6 Sol cost 1.6× less, $0.0110 against $0.0172 for the 5 replies. Kimi K3's replies ran 14% longer, in tokens of reply, thinking not counted.
Customer support: GPT-6 Sol passed 3 of 5 and Kimi K3 4 of 5. GPT-6 Sol answered 1.3× sooner at the median, 3.2 s against 4.3 s. GPT-6 Sol cost 1.6× less, $0.0146 against $0.0228 for the 5 replies. Kimi K3's replies ran 79% longer, in tokens of reply, thinking not counted.
Translation: GPT-6 Sol passed 4 of 5 and Kimi K3 5 of 5. GPT-6 Sol answered 1.6× sooner at the median, 3.2 s against 5.2 s. GPT-6 Sol cost 1.3× less, $0.0140 against $0.0179 for the 5 replies. Kimi K3's replies ran 104% longer, in tokens of reply, thinking not counted.
Math: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. GPT-6 Sol answered 2.5× sooner at the median, 2.2 s against 5.4 s. GPT-6 Sol cost 2.1× less, $0.0090 against $0.0187 for the 5 replies. Kimi K3's replies ran 18% longer, in tokens of reply, thinking not counted.
Data analysis: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. GPT-6 Sol answered 1.3× sooner at the median, 2.8 s against 3.5 s. GPT-6 Sol cost 2.0× less, $0.0169 against $0.0339 for the 5 replies. Kimi K3's replies ran 112% longer, in tokens of reply, thinking not counted.
Writing: GPT-6 Sol passed 4 of 5 and Kimi K3 4 of 5. Kimi K3 answered 1.2× sooner at the median, 3.5 s against 3.0 s. GPT-6 Sol cost 1.7× less, $0.0113 against $0.0192 for the 5 replies. Kimi K3's replies ran 41% longer, in tokens of reply, thinking not counted.
Agents and tool use: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. Their median waits were close, 1.9 s against 2.0 s. GPT-6 Sol cost 1.7× less, $0.0081 against $0.0135 for the 5 replies. Kimi K3's replies ran 34% longer, in tokens of reply, thinking not counted.
Coding: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. Kimi K3 answered 1.2× sooner at the median, 4.8 s against 4.1 s. GPT-6 Sol cost 1.2× less, $0.0262 against $0.0316 for the 5 replies. Kimi K3's replies ran 39% longer, in tokens of reply, thinking not counted.
SQL: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. GPT-6 Sol answered 1.2× sooner at the median, 1.3 s against 1.6 s. GPT-6 Sol cost 1.1× less, $0.0104 against $0.0118 for the 5 replies. Their replies ran to about the same length.
RAG and answering from documents: GPT-6 Sol passed 5 of 5 and Kimi K3 5 of 5. GPT-6 Sol answered 2.4× sooner at the median, 1.1 s against 2.6 s. Kimi K3 cost 1.1× less, $0.0081 against $0.0073 for the 5 replies. Kimi K3's replies ran 58% 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 | Kimi K3, 1.3×took 3.3 s and 2.6 s | GPT-6 Sol, 1.2×cost $0.0028 and $0.0035 |
| Parse a duration like “1h 30m” | Both passed | GPT-6 Sol, 1.5×took 4.8 s and 7.1 s | GPT-6 Sol, 1.5×cost $0.0042 and $0.0063 |
| Merge overlapping intervals | Both passed | GPT-6 Sol, 1.2×took 1.7 s and 2.0 s | GPT-6 Sol, 1.6×cost $0.0022 and $0.0036 |
| Evaluate an arithmetic expression, no eval | Both passed | Closetook 9.7 s and 9.9 s | GPT-6 Sol, 1.3×cost $0.0089 and $0.0113 |
| Parse CSV with quoted fields | Both passed | Kimi K3, 2.2×took 8.9 s and 4.1 s | Kimi K3, 1.2×cost $0.0081 and $0.0069 |
| Announce a second bakery shop on LinkedIn | Both passed | GPT-6 Sol, 1.1×took 3.5 s and 3.9 s | GPT-6 Sol, 1.7×cost $0.0027 and $0.0046 |
| Rewrite corporate jargon in plain words | Only Kimi K3 | Kimi K3, 2.5×took 5.0 s and 2.0 s | Closecost $0.0033 and $0.0030 |
| Decline a meeting and offer two times | Both passed | GPT-6 Sol, 2.2×took 1.3 s and 3.0 s | GPT-6 Sol, 2.4×cost $0.0014 and $0.0034 |
| A product announcement with five rules | Only GPT-6 Sol | GPT-6 Sol, 1.4×took 1.6 s and 2.3 s | GPT-6 Sol, 2.3×cost $0.0014 and $0.0033 |
| Argue both sides of free buses | Both passed | Kimi K3, 1.2×took 4.2 s and 3.6 s | GPT-6 Sol, 1.9×cost $0.0025 and $0.0049 |
| A discount, then sales tax | Both passed | GPT-6 Sol, 3.0×took 1.7 s and 5.0 s | GPT-6 Sol, 2.9×cost $0.0013 and $0.0037 |
| Pens at 3 for $4 | Both passed | GPT-6 Sol, 1.6×took 3.3 s and 5.4 s | GPT-6 Sol, 1.9×cost $0.0024 and $0.0046 |
| Compound interest over three years | Both passed | GPT-6 Sol, 4.2×took 1.4 s and 5.9 s | GPT-6 Sol, 3.1×cost $0.0014 and $0.0044 |
| Four-digit numbers whose digits sum to 9 | Both passed | GPT-6 Sol, 2.4×took 2.5 s and 6.0 s | GPT-6 Sol, 1.7×cost $0.0019 and $0.0032 |
| The highest of three dice is a 5 | Both passed | GPT-6 Sol, 1.1×took 2.2 s and 2.4 s | GPT-6 Sol, 1.4×cost $0.0020 and $0.0027 |
| An article in three bullets | Neither passed | GPT-6 Sol, 1.4×took 2.0 s and 2.8 s | GPT-6 Sol, 1.4×cost $0.0020 and $0.0028 |
| An email thread in one sentence | Only GPT-6 Sol | GPT-6 Sol, 3.2×took 2.0 s and 6.4 s | GPT-6 Sol, 2.2×cost $0.0014 and $0.0030 |
| Decisions and action items from a meeting | Both passed | Closetook 3.5 s and 3.4 s | GPT-6 Sol, 1.3×cost $0.0034 and $0.0044 |
| A quarterly memo for the CEO | Both passed | GPT-6 Sol, 5.9×took 2.6 s and 15.7 s | GPT-6 Sol, 2.0×cost $0.0024 and $0.0049 |
| A study with a negative result | Both passed | GPT-6 Sol, 2.0×took 1.7 s and 3.2 s | GPT-6 Sol, 1.2×cost $0.0017 and $0.0021 |
| The region with the most revenue | Both passed | Kimi K3, 1.3×took 2.8 s and 2.2 s | GPT-6 Sol, 1.9×cost $0.0026 and $0.0049 |
| Average order value in August | Both passed | Closetook 2.8 s and 2.7 s | GPT-6 Sol, 2.2×cost $0.0025 and $0.0054 |
| Revenue change from July to August | Both passed | GPT-6 Sol, 2.3×took 2.8 s and 6.4 s | GPT-6 Sol, 2.6×cost $0.0025 and $0.0064 |
| A median, filtered two ways | Both passed | GPT-6 Sol, 1.4×took 2.5 s and 3.5 s | GPT-6 Sol, 1.7×cost $0.0024 and $0.0042 |
| Correlation between ad spend and sign-ups | Both passed | GPT-6 Sol, 3.1×took 6.6 s and 20.2 s | GPT-6 Sol, 1.9×cost $0.0069 and $0.0131 |
| A late order | Only Kimi K3 | Kimi K3, 1.3×took 3.2 s and 2.5 s | GPT-6 Sol, 1.8×cost $0.0025 and $0.0045 |
| A return inside the window | Both passed | GPT-6 Sol, 2.9×took 1.5 s and 4.3 s | GPT-6 Sol, 2.0×cost $0.0017 and $0.0033 |
| A frustrated customer | Only Kimi K3 | Closetook 5.9 s and 5.6 s | GPT-6 Sol, 1.5×cost $0.0043 and $0.0063 |
| A refund request outside the window | Only GPT-6 Sol | Kimi K3, 1.2×took 3.0 s and 2.6 s | GPT-6 Sol, 1.8×cost $0.0025 and $0.0045 |
| A message with a planted instruction | Both passed | GPT-6 Sol, 2.6×took 4.4 s and 11.5 s | GPT-6 Sol, 1.1×cost $0.0037 and $0.0041 |
| A delivery message into Spanish | Both passed | Closetook 3.2 s and 2.9 s | GPT-6 Sol, 1.2×cost $0.0026 and $0.0031 |
| A product description into French | Both passed | GPT-6 Sol, 2.6×took 2.1 s and 5.4 s | GPT-6 Sol, 2.0×cost $0.0019 and $0.0037 |
| A meeting note into German | Both passed | Kimi K3, 1.7×took 5.0 s and 3.0 s | Kimi K3, 2.5×cost $0.0035 and $0.0014 |
| Idioms into natural Japanese | Only Kimi K3 | GPT-6 Sol, 2.2×took 2.4 s and 5.2 s | GPT-6 Sol, 2.6×cost $0.0021 and $0.0053 |
| A lease clause into Brazilian Portuguese | Both passed | GPT-6 Sol, 2.2×took 4.6 s and 10.1 s | Closecost $0.0040 and $0.0044 |
| Customers in one country | Both passed | Closetook 1.1 s and 1.1 s | GPT-6 Sol, 1.5×cost $0.0012 and $0.0018 |
| Count orders by status | Both passed | GPT-6 Sol, 1.4×took 1.1 s and 1.5 s | Kimi K3, 1.4×cost $0.0012 and $0.0009 |
| Revenue by category | Both passed | GPT-6 Sol, 1.2×took 1.3 s and 1.6 s | Closecost $0.0018 and $0.0019 |
| Every customer, even those without orders | Both passed | GPT-6 Sol, 1.8×took 1.4 s and 2.5 s | GPT-6 Sol, 1.7×cost $0.0018 and $0.0031 |
| Monthly revenue with a running total | Both passed | Kimi K3, 1.8×took 4.5 s and 2.5 s | Closecost $0.0043 and $0.0042 |
| A fact from one section | Both passed | GPT-6 Sol, 5.8×took 1.1 s and 6.5 s | Kimi K3, 1.5×cost $0.0015 and $0.0010 |
| Core hours and start times | Both passed | GPT-6 Sol, 1.1×took 1.1 s and 1.2 s | Kimi K3, 1.4×cost $0.0016 and $0.0011 |
| Two sections in one answer | Both passed | GPT-6 Sol, 2.2×took 1.2 s and 2.6 s | GPT-6 Sol, 1.2×cost $0.0016 and $0.0020 |
| A later amendment changes the answer | Both passed | GPT-6 Sol, 2.4×took 2.0 s and 4.8 s | GPT-6 Sol, 1.1×cost $0.0020 and $0.0022 |
| A question the handbook doesn't answer | Both passed | Closetook 0.9 s and 0.9 s | Kimi K3, 1.4×cost $0.0014 and $0.0010 |
| Pick the tool and work out the date | Both passed | GPT-6 Sol, 1.7×took 2.2 s and 3.7 s | GPT-6 Sol, 2.0×cost $0.0016 and $0.0032 |
| Convert a currency | Both passed | GPT-6 Sol, 1.6×took 1.8 s and 2.9 s | GPT-6 Sol, 2.1×cost $0.0012 and $0.0025 |
| Book a meeting from a sentence | Both passed | Kimi K3, 1.2×took 1.9 s and 1.6 s | GPT-6 Sol, 1.5×cost $0.0021 and $0.0031 |
| Search, but don't book | Both passed | GPT-6 Sol, 1.8×took 1.1 s and 2.0 s | GPT-6 Sol, 2.5×cost $0.0014 and $0.0034 |
| Two calls with a unit conversion | Both passed | Kimi K3, 1.6×took 2.8 s and 1.7 s | Kimi K3, 1.5×cost $0.0018 and $0.0012 |
GPT-6 Sol vs Kimi K3 in our test runs
GPT-6 Sol and Kimi K3 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 | Kimi K3 |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 4 of 5 | 4 of 5 |
| Math | 5 of 5 | 5 of 5 |
| Summarization | 4 of 5 | 3 of 5 |
| Data analysis | 5 of 5 | 5 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 · $0.0039 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, summarization: both replies to a prompt only one of them passed.
An everyday prompt: “An email thread in one sentence”, in full.
GPT-6 Sol
Passed: Graded 5.0 of 5 on average (lowest 5).
A paper shortage delayed the brochures until the 18th, but Rosa will collect them in the van Idris booked, ahead of the trade fair on the 20th.
483 tokens in, 39 out · 2.0 s · $0.0014 · 1 message on Pro · answered by openai/gpt-6-sol via OpenAI ·
Kimi K3
Failed: Graded 5.0 of 5 on average (lowest 5); but 32 words, over the 30 allowed.
Due to a paper shortage delaying brochure shipping to the 18th, Rosa and Idris arranged to pick them up themselves, booking a van for the 18th ahead of the 20th trade fair.
574 tokens in, 65 out (9 of them reasoning) · 6.4 s · $0.0030 · 1 message on Pro · answered by moonshotai/kimi-k3 via Fireworks ·
GPT-6 Sol and Kimi K3 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 | Kimi K3 |
|---|---|---|---|
| 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 125 a month |
| Max | $50 a month | Up to 400 a month | Up to 400 a month |
| Ultra | $100 a month | Up to 900 a month | Up to 900 a month |
| Studio | $200 a month | Up to 2,000 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: 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 125 messages a month on Pro on either.
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. Kimi K3 gets a PDF's text rather than the file itself.
On Free
Both are in the free trial.
Where messages go
GPT-6 Sol: Sent to OpenAI directly. Kimi K3: 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 | GPT-6 Sol | Kimi K3 |
|---|---|---|
| Context window | 1.05M tokens | 1.05M tokens |
| Reads images | Yes | Yes |
| PDFs | Whole file | Text only |
| Reasoning | Yes | Yes |
| API price (September 2026) | $2.00 in / $10.00 out per million tokens | $3.00 in / $15.00 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0150 | $0.0225 |
| A $10 top-up adds | 100 messages | 100 messages |
| Where a message goes | Sent to OpenAI 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 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. | 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 |
GPT-6 Sol or Kimi K3?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
Pick GPT-6 Sol: it reads a PDF as the whole file, charts and scans included; it costs its maker less to run ($0.0150 a typical message at API prices), though in llmwise the count is the same.
Each model's page, the families, and other pairs
GPT-6 Sol vs Kimi K3 is one pair of models. The page below covers the whole families.
- GPT-6 Sol: price, limits and messages on every plan
- Kimi K3: price, limits and messages on every plan
- ChatGPT vs Kimi
- Claude Opus 5.5 vs GPT-6 Sol
- GPT-6 Astra vs GPT-6 Sol
- GPT-6 Sol vs GPT-6 Luna
- Claude Fable 5.1 vs Kimi K3
- Kimi K3 vs GLM 5.3
- DeepSeek V4 Pro vs Kimi K3
- Every model-vs-model page
GPT-6 Sol is a GPT model; Kimi K3 is a Kimi model.
Questions
Is GPT-6 Sol or Kimi K3 cheaper in llmwise?
They cost the same in llmwise: up to 125 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 GPT-6 Sol and Kimi K3 for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, GPT-6 Sol or Kimi K3?
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 Kimi K3 in the same chat?
Yes. Pick GPT-6 Sol for one message and Kimi K3 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 Kimi K3?
On the same 50 prompts, run on September 27, 2026, GPT-6 Sol passed 45 and Kimi K3 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.