Model vs model
GPT-6 Luna vs Grok 4.7
GPT-6 Luna and Grok 4.7 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 Luna page, OpenRouter's Grok 4.7 page. Updated .
Short answer
GPT-6 Luna is an everyday model (60 messages a day on Pro); Grok 4.7 draws on the monthly allowance (up to 250 messages a month on Pro). Beyond that, they read the same files and neither is easier to try. In our test runs, GPT-6 Luna passed 47 of the 50 prompts both answered and Grok 4.7 47; 4 prompts split them, most on writing (5 to 3).
GPT-6 Luna vs Grok 4.7, prompt by prompt
Every prompt GPT-6 Luna and Grok 4.7 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 45, only GPT-6 Luna passed 2, only Grok 4.7 passed 2, and neither passed 1. GPT-6 Luna answered sooner on 47 of the 50 and Grok 4.7 on 1; the rest were within 10% of each other. The 50 replies cost $0.0059 on GPT-6 Luna and $0.3163 on Grok 4.7: 53.6× less on GPT-6 Luna.
The 4 prompts only one of GPT-6 Luna and Grok 4.7 passed
Announce a second bakery shop on LinkedIn (writing): GPT-6 Luna passed and Grok 4.7 didn't. GPT-6 Luna: Graded 4.5 of 5 on average (lowest 4). Grok 4.7: Graded 4.5 of 5 on average (lowest 4); but 94 words, under the 100 asked for.
Rewrite corporate jargon in plain words (writing): GPT-6 Luna passed and Grok 4.7 didn't. GPT-6 Luna: Graded 4.7 of 5 on average (lowest 4). Grok 4.7: Graded 3.7 of 5 on average (lowest 3).
Pens at 3 for $4 (math): Grok 4.7 passed and GPT-6 Luna didn't. GPT-6 Luna: Final answer 2 bundles and 4 singles for 12; expected 13.5. Grok 4.7: Final answer 3 bundles + 1 single ( 13.50): right.
An article in three bullets (summarization): Grok 4.7 passed and GPT-6 Luna didn't. GPT-6 Luna: Graded 4.0 of 5 on average (lowest 3); but 61 words, over the 60 allowed. Grok 4.7: Graded 4.7 of 5 on average (lowest 4).
Job by job, the widest gaps first
Writing: GPT-6 Luna passed 5 of 5 and Grok 4.7 3 of 5. GPT-6 Luna answered 1.7× sooner at the median, 2.4 s against 4.0 s. GPT-6 Luna cost 42.3× less, $0.0005 against $0.0210 for the 5 replies. GPT-6 Luna's replies ran 11% longer, in tokens of reply, thinking not counted.
Math: GPT-6 Luna passed 4 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 4.1× sooner at the median, 2.2 s against 9.1 s. GPT-6 Luna cost 51.1× less, $0.0005 against $0.0251 for the 5 replies. Grok 4.7's replies ran 66% longer, in tokens of reply, thinking not counted.
Summarization: GPT-6 Luna passed 4 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 3.2× sooner at the median, 1.5 s against 4.7 s. GPT-6 Luna cost 34.3× less, $0.0005 against $0.0161 for the 5 replies. Their replies ran to about the same length.
Coding: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 5.5× sooner at the median, 4.6 s against 25.3 s. GPT-6 Luna cost 76.7× less, $0.0014 against $0.1099 for the 5 replies. Grok 4.7's replies ran 19% longer, in tokens of reply, thinking not counted.
Translation: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 8.9× sooner at the median, 1.6 s against 13.8 s. GPT-6 Luna cost 74.8× less, $0.0005 against $0.0347 for the 5 replies. GPT-6 Luna's replies ran 10% longer, in tokens of reply, thinking not counted.
Customer support: GPT-6 Luna passed 4 of 5 and Grok 4.7 4 of 5. GPT-6 Luna answered 5.6× sooner at the median, 1.4 s against 7.9 s. GPT-6 Luna cost 55.4× less, $0.0004 against $0.0239 for the 5 replies. Grok 4.7's replies ran 83% longer, in tokens of reply, thinking not counted.
Data analysis: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 3.8× sooner at the median, 2.5 s against 9.4 s. GPT-6 Luna cost 48.0× less, $0.0009 against $0.0423 for the 5 replies. Grok 4.7's replies ran 60% longer, in tokens of reply, thinking not counted.
SQL: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 4.1× sooner at the median, 1.2 s against 4.9 s. GPT-6 Luna cost 42.5× less, $0.0004 against $0.0189 for the 5 replies. Their replies ran to about the same length.
Agents and tool use: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 1.3× sooner at the median, 1.9 s against 2.5 s. GPT-6 Luna cost 31.8× less, $0.0004 against $0.0129 for the 5 replies. Their replies ran to about the same length.
RAG and answering from documents: GPT-6 Luna passed 5 of 5 and Grok 4.7 5 of 5. GPT-6 Luna answered 1.5× sooner at the median, 1.3 s against 1.9 s. GPT-6 Luna cost 29.8× less, $0.0004 against $0.0115 for the 5 replies. GPT-6 Luna's replies ran 24% 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 Luna, 2.9×took 2.3 s and 6.7 s | GPT-6 Luna, 56.8×cost $0.0001 and $0.0048 |
| Parse a duration like “1h 30m” | Both passed | GPT-6 Luna, 5.5×took 4.6 s and 25.3 s | GPT-6 Luna, 60.3×cost $0.0003 and $0.0151 |
| Merge overlapping intervals | Both passed | GPT-6 Luna, 2.6×took 1.5 s and 3.8 s | GPT-6 Luna, 22.5×cost $0.0001 and $0.0025 |
| Evaluate an arithmetic expression, no eval | Both passed | GPT-6 Luna, 14.1×took 8.8 s and 124.9 s | GPT-6 Luna, 84.6×cost $0.0006 and $0.0472 |
| Parse CSV with quoted fields | Both passed | GPT-6 Luna, 14.0×took 7.2 s and 100.4 s | GPT-6 Luna, 93.9×cost $0.0004 and $0.0403 |
| Announce a second bakery shop on LinkedIn | Only GPT-6 Luna | GPT-6 Luna, 1.4×took 2.9 s and 4.0 s | GPT-6 Luna, 19.5×cost $0.0001 and $0.0022 |
| Rewrite corporate jargon in plain words | Only GPT-6 Luna | GPT-6 Luna, 8.1×took 2.4 s and 19.3 s | GPT-6 Luna, 84.8×cost $0.0001 and $0.0088 |
| Decline a meeting and offer two times | Both passed | GPT-6 Luna, 1.8×took 1.3 s and 2.3 s | GPT-6 Luna, 26.4×cost $0.0001 and $0.0019 |
| A product announcement with five rules | Both passed | GPT-6 Luna, 1.8×took 1.5 s and 2.6 s | GPT-6 Luna, 21.5×cost $0.0001 and $0.0017 |
| Argue both sides of free buses | Both passed | GPT-6 Luna, 4.8×took 2.5 s and 12.1 s | GPT-6 Luna, 49.2×cost $0.0001 and $0.0065 |
| A discount, then sales tax | Both passed | GPT-6 Luna, 1.2×took 3.1 s and 3.9 s | GPT-6 Luna, 36.6×cost $0.0001 and $0.0027 |
| Pens at 3 for $4 | Only Grok 4.7 | GPT-6 Luna, 14.2×took 2.9 s and 40.7 s | GPT-6 Luna, 62.2×cost $0.0001 and $0.0087 |
| Compound interest over three years | Both passed | GPT-6 Luna, 2.7×took 2.0 s and 5.5 s | GPT-6 Luna, 39.3×cost $0.0001 and $0.0031 |
| Four-digit numbers whose digits sum to 9 | Both passed | GPT-6 Luna, 5.6×took 2.0 s and 11.1 s | GPT-6 Luna, 55.7×cost $0.0001 and $0.0056 |
| The highest of three dice is a 5 | Both passed | GPT-6 Luna, 4.1×took 2.2 s and 9.1 s | GPT-6 Luna, 51.1×cost $0.0001 and $0.0050 |
| An article in three bullets | Only Grok 4.7 | GPT-6 Luna, 6.6×took 1.5 s and 9.8 s | GPT-6 Luna, 51.5×cost $0.0001 and $0.0051 |
| An email thread in one sentence | Both passed | GPT-6 Luna, 1.6×took 1.1 s and 1.7 s | GPT-6 Luna, 27.0×cost $0.0001 and $0.0018 |
| Decisions and action items from a meeting | Both passed | GPT-6 Luna, 3.2×took 1.5 s and 4.7 s | GPT-6 Luna, 27.5×cost $0.0001 and $0.0028 |
| A quarterly memo for the CEO | Both passed | GPT-6 Luna, 4.0×took 1.5 s and 6.1 s | GPT-6 Luna, 35.9×cost $0.0001 and $0.0044 |
| A study with a negative result | Both passed | GPT-6 Luna, 2.3×took 1.3 s and 3.0 s | GPT-6 Luna, 25.8×cost $0.0001 and $0.0020 |
| The region with the most revenue | Both passed | GPT-6 Luna, 3.8×took 2.5 s and 9.4 s | GPT-6 Luna, 43.3×cost $0.0001 and $0.0057 |
| Average order value in August | Both passed | GPT-6 Luna, 2.1×took 2.6 s and 5.5 s | GPT-6 Luna, 28.4×cost $0.0001 and $0.0037 |
| Revenue change from July to August | Both passed | GPT-6 Luna, 4.1×took 2.5 s and 10.1 s | GPT-6 Luna, 53.4×cost $0.0001 and $0.0071 |
| A median, filtered two ways | Both passed | GPT-6 Luna, 1.7×took 2.5 s and 4.2 s | GPT-6 Luna, 31.0×cost $0.0001 and $0.0036 |
| Correlation between ad spend and sign-ups | Both passed | GPT-6 Luna, 6.7×took 6.7 s and 45.4 s | GPT-6 Luna, 60.0×cost $0.0004 and $0.0222 |
| A late order | Both passed | GPT-6 Luna, 11.0×took 1.6 s and 17.2 s | GPT-6 Luna, 83.4×cost $0.0001 and $0.0076 |
| A return inside the window | Both passed | GPT-6 Luna, 3.8×took 1.2 s and 4.7 s | GPT-6 Luna, 37.6×cost $0.0001 and $0.0032 |
| A frustrated customer | Neither passed | GPT-6 Luna, 6.8×took 1.4 s and 9.4 s | GPT-6 Luna, 61.4×cost $0.0001 and $0.0050 |
| A refund request outside the window | Both passed | GPT-6 Luna, 5.9×took 1.3 s and 7.6 s | GPT-6 Luna, 49.7×cost $0.0001 and $0.0041 |
| A message with a planted instruction | Both passed | GPT-6 Luna, 5.1×took 1.5 s and 7.9 s | GPT-6 Luna, 43.6×cost $0.0001 and $0.0040 |
| A delivery message into Spanish | Both passed | GPT-6 Luna, 5.4×took 2.6 s and 13.8 s | GPT-6 Luna, 69.0×cost $0.0001 and $0.0066 |
| A product description into French | Both passed | GPT-6 Luna, 16.4×took 1.4 s and 22.7 s | GPT-6 Luna, 106.4×cost $0.0001 and $0.0097 |
| A meeting note into German | Both passed | GPT-6 Luna, 7.3×took 1.7 s and 12.6 s | GPT-6 Luna, 73.8×cost $0.0001 and $0.0060 |
| Idioms into natural Japanese | Both passed | GPT-6 Luna, 6.4×took 1.6 s and 10.0 s | GPT-6 Luna, 48.3×cost $0.0001 and $0.0048 |
| A lease clause into Brazilian Portuguese | Both passed | GPT-6 Luna, 9.9×took 1.5 s and 15.0 s | GPT-6 Luna, 78.8×cost $0.0001 and $0.0076 |
| Customers in one country | Both passed | GPT-6 Luna, 1.8×took 1.0 s and 1.8 s | GPT-6 Luna, 30.2×cost $0.0001 and $0.0018 |
| Count orders by status | Both passed | GPT-6 Luna, 1.6×took 0.9 s and 1.4 s | GPT-6 Luna, 28.8×cost $0.0001 and $0.0017 |
| Revenue by category | Both passed | GPT-6 Luna, 4.1×took 1.2 s and 4.9 s | GPT-6 Luna, 33.9×cost $0.0001 and $0.0031 |
| Every customer, even those without orders | Both passed | GPT-6 Luna, 2.2×took 2.4 s and 5.3 s | GPT-6 Luna, 37.8×cost $0.0001 and $0.0037 |
| Monthly revenue with a running total | Both passed | GPT-6 Luna, 9.3×took 1.8 s and 16.9 s | GPT-6 Luna, 62.5×cost $0.0001 and $0.0086 |
| A fact from one section | Both passed | GPT-6 Luna, 2.1×took 1.3 s and 2.7 s | GPT-6 Luna, 33.3×cost $0.0001 and $0.0025 |
| Core hours and start times | Both passed | GPT-6 Luna, 1.9×took 1.0 s and 1.9 s | GPT-6 Luna, 27.9×cost $0.0001 and $0.0022 |
| Two sections in one answer | Both passed | Closetook 1.4 s and 1.5 s | GPT-6 Luna, 22.5×cost $0.0001 and $0.0018 |
| A later amendment changes the answer | Both passed | GPT-6 Luna, 5.6×took 1.0 s and 5.5 s | GPT-6 Luna, 35.8×cost $0.0001 and $0.0030 |
| A question the handbook doesn't answer | Both passed | Closetook 1.9 s and 1.8 s | GPT-6 Luna, 29.3×cost $0.0001 and $0.0021 |
| Pick the tool and work out the date | Both passed | Grok 4.7, 1.4×took 2.1 s and 1.5 s | GPT-6 Luna, 24.5×cost $0.0001 and $0.0018 |
| Convert a currency | Both passed | GPT-6 Luna, 1.4×took 1.1 s and 1.5 s | GPT-6 Luna, 20.4×cost $0.0001 and $0.0013 |
| Book a meeting from a sentence | Both passed | GPT-6 Luna, 7.4×took 1.2 s and 9.1 s | GPT-6 Luna, 54.1×cost $0.0001 and $0.0048 |
| Search, but don't book | Both passed | GPT-6 Luna, 1.1×took 2.2 s and 2.5 s | GPT-6 Luna, 23.8×cost $0.0001 and $0.0020 |
| Two calls with a unit conversion | Both passed | GPT-6 Luna, 2.4×took 1.9 s and 4.5 s | GPT-6 Luna, 31.7×cost $0.0001 and $0.0029 |
GPT-6 Luna vs Grok 4.7 in our test runs
GPT-6 Luna and Grok 4.7 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 Luna | Grok 4.7 |
|---|---|---|
| Coding | 5 of 5 | 5 of 5 |
| Writing | 5 of 5 | 3 of 5 |
| Math | 4 of 5 | 5 of 5 |
| Summarization | 4 of 5 | 5 of 5 |
| Data analysis | 5 of 5 | 5 of 5 |
| Customer support | 4 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 |
| All jobs | 47 of 50 · 1 message each · $0.0001 a reply | 47 of 50 · 1 message each · $0.0063 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.
An everyday prompt: “Announce a second bakery shop on LinkedIn”, in full.
GPT-6 Luna
Passed: Graded 4.5 of 5 on average (lowest 4).
We’re delighted to share that Crumb & Co. is opening a second shop in Leeds on 14 November! What began as one small bakery has grown thanks to the lovely people who’ve stopped by, shared a loaf, and made us feel part of the community. We’re excited to bring our freshly baked bread, pastries, and warm welcomes to a new neighbourhood. To celebrate opening day, we’ll be giving away free coffee. Pop in, say hello, and enjoy a cup with us—we’d love to meet you. Thank you to everyone who has supported Crumb & Co. so far. We can’t wait to open the doors and start this next chapter together. See you in Leeds on 14 November!
389 tokens in, 149 out · 2.9 s · $0.0001 · 1 message on Pro · answered by openai/gpt-6-luna via OpenAI ·
Grok 4.7
Failed: Graded 4.5 of 5 on average (lowest 4); but 94 words, under the 100 asked for.
We're opening a second Crumb & Co. shop in Leeds on 14 November. The new bakery will offer the same bread, cakes and pastries you already know from our first shop, baked fresh each morning. If you've been asking for a Leeds location, this one is for you. On opening day, coffee is free with any purchase. Come in, say hello, and try something from the counter. We'd love to meet you and hear what you'd like to see on the shelves. Thank you for supporting a small bakery. We can't wait to welcome you.
1,624 tokens in, 207 out (93 of them reasoning) · 4.0 s · $0.0022 · 1 message on Pro · answered by x-ai/grok-4.7 via xAI ·
GPT-6 Luna and Grok 4.7 on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | GPT-6 Luna | Grok 4.7 |
|---|---|---|---|
| Free | $0 | In the one-time trial of 5 messages | In the one-time trial of 5 messages |
| Pro | $20 a month | 60 a day | Up to 250 a month |
| Max | $50 a month | 120 a day | Up to 800 a month |
| Ultra | $100 a month | 200 a day | Up to 1,800 a month |
| Studio | $200 a month | 200 a day | 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
GPT-6 Luna is an everyday model (60 messages a day on Pro); Grok 4.7 draws on the monthly allowance (up to 250 messages a month on Pro).
Context window
GPT-6 Luna takes up to 1.05M tokens; Grok 4.7 up to 500K 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
Both are in the free trial.
Where messages go
GPT-6 Luna: Sent to OpenAI directly. Grok 4.7: Served through OpenRouter by xAI alone, on an endpoint that doesn't store or train on prompts.
Fact by fact
| Fact | GPT-6 Luna | Grok 4.7 |
|---|---|---|
| Context window | 1.05M tokens | 500K tokens |
| Reads images | Yes | Yes |
| PDFs | Whole file | Whole file |
| Reasoning | Yes | Yes |
| API price (September 2026) | $0.10 in / $0.50 out per million tokens | $1.60 in / $4.80 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0008 | $0.0098 |
| A $10 top-up adds | Nothing: an everyday model's count is daily | 200 messages |
| Where a message goes | Sent to OpenAI directly. | Served through OpenRouter by xAI alone, on an endpoint that doesn't store or train on prompts. |
| 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 Luna through OpenRouter instead. | xAI is its only host, so there's no other host to move to: if xAI fails, send the message again or pick another model. |
| Anthropic's safety fallback | Doesn't apply | Doesn't apply |
GPT-6 Luna or Grok 4.7?
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 Luna: its messages come from the daily count (60 messages a day on Pro), so they leave the monthly allowance for bigger models.
Each model's page, the families, and other pairs
GPT-6 Luna vs Grok 4.7 is one pair of models. The page below covers the whole families.
- GPT-6 Luna: price, limits and messages on every plan
- Grok 4.7: price, limits and messages on every plan
- Grok vs ChatGPT
- GPT-6 Luna vs DeepSeek V4.1 Flash
- GPT-6 Sol vs GPT-6 Luna
- Claude Haiku 4.5 vs GPT-6 Luna
- Claude Fable 5.1 vs Grok 4.7
- GPT-6 Astra vs Grok 4.7
- Claude Sonnet 5 vs Grok 4.7
- Every model-vs-model page
GPT-6 Luna is a GPT model; Grok 4.7 is a Grok model.
Questions
Is GPT-6 Luna or Grok 4.7 cheaper in llmwise?
GPT-6 Luna is an everyday model (60 messages a day on Pro); Grok 4.7 draws on the monthly allowance (up to 250 messages a month on Pro). 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 Luna and Grok 4.7 for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, GPT-6 Luna or Grok 4.7?
GPT-6 Luna: 1.05M tokens, against 500K 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 Luna and Grok 4.7 in the same chat?
Yes. Pick GPT-6 Luna for one message and Grok 4.7 for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, GPT-6 Luna or Grok 4.7?
On the same 50 prompts, run on September 27, 2026, GPT-6 Luna passed 47 and Grok 4.7 passed 47. 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.