Model vs model
GPT-6.1 Sol vs Claude Sonnet 5.5
GPT-6.1 Sol and Claude Sonnet 5.5 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-6.1 Sol page, OpenRouter's Claude Sonnet 5.5 page. Updated .
Short answer
They cost the same in llmwise: up to 125 messages a month on Pro on either. Otherwise, only Claude Sonnet 5.5 can be passed to another model by its maker's safety system. In our test runs, GPT-6.1 Sol passed 46 of the 50 prompts both answered and Claude Sonnet 5.5 47; 5 prompts split them, most on customer support (2 to 4).
GPT-6.1 Sol vs Claude Sonnet 5.5, prompt by prompt
Every prompt GPT-6.1 Sol and Claude Sonnet 5.5 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 44, only GPT-6.1 Sol passed 2, only Claude Sonnet 5.5 passed 3, and neither passed 1. GPT-6.1 Sol answered sooner on 11 of the 50 and Claude Sonnet 5.5 on 26; the rest were within 10% of each other. The 50 replies cost $0.0597 on GPT-6.1 Sol and $0.1912 on Claude Sonnet 5.5: 3.2× less on GPT-6.1 Sol.
The 5 prompts only one of GPT-6.1 Sol and Claude Sonnet 5.5 passed
Rewrite corporate jargon in plain words (writing): Claude Sonnet 5.5 passed and GPT-6.1 Sol didn't. GPT-6.1 Sol: Graded 3.7 of 5 on average (lowest 3). Claude Sonnet 5.5: Graded 4.7 of 5 on average (lowest 4).
Argue both sides of free buses (writing): GPT-6.1 Sol passed and Claude Sonnet 5.5 didn't. GPT-6.1 Sol: Graded 4.3 of 5 on average (lowest 4). Claude Sonnet 5.5: Graded 4.7 of 5 on average (lowest 4); but a paragraph of 98 words, over the 90 allowed.
An email thread in one sentence (summarization): GPT-6.1 Sol passed and Claude Sonnet 5.5 didn't. GPT-6.1 Sol: Graded 4.7 of 5 on average (lowest 4). Claude Sonnet 5.5: Graded 4.7 of 5 on average (lowest 4); but 35 words, over the 30 allowed.
A late order (customer support): Claude Sonnet 5.5 passed and GPT-6.1 Sol didn't. GPT-6.1 Sol: Graded 3.7 of 5 on average (lowest 1). Claude Sonnet 5.5: Graded 5.0 of 5 on average (lowest 5).
A refund request outside the window (customer support): Claude Sonnet 5.5 passed and GPT-6.1 Sol didn't. GPT-6.1 Sol: Graded 3.7 of 5 on average (lowest 3). Claude Sonnet 5.5: Graded 4.7 of 5 on average (lowest 4).
Job by job, the widest gaps first
Customer support: GPT-6.1 Sol passed 2 of 5 and Claude Sonnet 5.5 4 of 5. Claude Sonnet 5.5 answered 1.3× sooner at the median, 3.2 s against 2.5 s. GPT-6.1 Sol cost 3.8× less, $0.0062 against $0.0232 for the 5 replies. Claude Sonnet 5.5's replies ran 117% longer, in tokens of reply, thinking not counted.
Summarization: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 4 of 5. Their median waits were close, 2.0 s against 1.9 s. GPT-6.1 Sol cost 3.3× less, $0.0050 against $0.0168 for the 5 replies. Claude Sonnet 5.5's replies ran 64% longer, in tokens of reply, thinking not counted.
SQL: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Their median waits were close, 1.7 s against 1.8 s. GPT-6.1 Sol cost 3.8× less, $0.0049 against $0.0190 for the 5 replies. Claude Sonnet 5.5's replies ran 103% longer, in tokens of reply, thinking not counted.
Agents and tool use: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. GPT-6.1 Sol answered 1.1× sooner at the median, 1.3 s against 1.4 s. GPT-6.1 Sol cost 3.5× less, $0.0036 against $0.0129 for the 5 replies. Claude Sonnet 5.5's replies ran 63% longer, in tokens of reply, thinking not counted.
RAG and answering from documents: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Their median waits were close, 1.3 s against 1.4 s. GPT-6.1 Sol cost 3.5× less, $0.0039 against $0.0140 for the 5 replies. Claude Sonnet 5.5's replies ran 97% longer, in tokens of reply, thinking not counted.
Translation: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Claude Sonnet 5.5 answered 1.4× sooner at the median, 3.2 s against 2.3 s. GPT-6.1 Sol cost 3.2× less, $0.0066 against $0.0211 for the 5 replies. Claude Sonnet 5.5's replies ran 163% longer, in tokens of reply, thinking not counted.
Writing: GPT-6.1 Sol passed 4 of 5 and Claude Sonnet 5.5 4 of 5. Claude Sonnet 5.5 answered 1.4× sooner at the median, 3.3 s against 2.3 s. GPT-6.1 Sol cost 3.0× less, $0.0057 against $0.0171 for the 5 replies. Claude Sonnet 5.5's replies ran 96% longer, in tokens of reply, thinking not counted.
Data analysis: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Claude Sonnet 5.5 answered 1.3× sooner at the median, 3.0 s against 2.3 s. GPT-6.1 Sol cost 3.0× less, $0.0080 against $0.0235 for the 5 replies. Claude Sonnet 5.5's replies ran 163% longer, in tokens of reply, thinking not counted.
Math: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Their median waits were close, 1.8 s against 1.7 s. GPT-6.1 Sol cost 2.9× less, $0.0043 against $0.0123 for the 5 replies. Claude Sonnet 5.5's replies ran 80% longer, in tokens of reply, thinking not counted.
Coding: GPT-6.1 Sol passed 5 of 5 and Claude Sonnet 5.5 5 of 5. Claude Sonnet 5.5 answered 2.4× sooner at the median, 4.8 s against 2.0 s. GPT-6.1 Sol cost 2.7× less, $0.0115 against $0.0313 for the 5 replies. Claude Sonnet 5.5's replies ran 118% 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 | Closetook 1.7 s and 1.8 s | GPT-6.1 Sol, 3.3×cost $0.0008 and $0.0028 |
| Parse a duration like “1h 30m” | Both passed | Claude Sonnet 5.5, 2.4×took 4.8 s and 2.0 s | GPT-6.1 Sol, 1.8×cost $0.0020 and $0.0036 |
| Merge overlapping intervals | Both passed | Claude Sonnet 5.5, 1.5×took 2.0 s and 1.4 s | GPT-6.1 Sol, 3.1×cost $0.0011 and $0.0033 |
| Evaluate an arithmetic expression, no eval | Both passed | Claude Sonnet 5.5, 1.6×took 7.8 s and 4.8 s | GPT-6.1 Sol, 2.7×cost $0.0037 and $0.0102 |
| Parse CSV with quoted fields | Both passed | Claude Sonnet 5.5, 1.6×took 8.4 s and 5.3 s | GPT-6.1 Sol, 3.0×cost $0.0038 and $0.0114 |
| Announce a second bakery shop on LinkedIn | Both passed | Claude Sonnet 5.5, 1.3×took 4.2 s and 3.3 s | GPT-6.1 Sol, 2.6×cost $0.0013 and $0.0035 |
| Rewrite corporate jargon in plain words | Only Claude Sonnet 5.5 | Claude Sonnet 5.5, 2.0×took 3.3 s and 1.6 s | GPT-6.1 Sol, 1.9×cost $0.0013 and $0.0025 |
| Decline a meeting and offer two times | Both passed | GPT-6.1 Sol, 1.3×took 1.8 s and 2.3 s | GPT-6.1 Sol, 4.1×cost $0.0007 and $0.0030 |
| A product announcement with five rules | Both passed | GPT-6.1 Sol, 1.2×took 1.9 s and 2.3 s | GPT-6.1 Sol, 3.4×cost $0.0009 and $0.0030 |
| Argue both sides of free buses | Only GPT-6.1 Sol | Closetook 4.6 s and 4.4 s | GPT-6.1 Sol, 3.7×cost $0.0014 and $0.0051 |
| A discount, then sales tax | Both passed | Closetook 1.5 s and 1.6 s | GPT-6.1 Sol, 2.9×cost $0.0006 and $0.0017 |
| Pens at 3 for $4 | Both passed | Claude Sonnet 5.5, 1.1×took 2.4 s and 2.2 s | GPT-6.1 Sol, 3.5×cost $0.0010 and $0.0036 |
| Compound interest over three years | Both passed | Claude Sonnet 5.5, 1.4×took 1.7 s and 1.3 s | GPT-6.1 Sol, 3.0×cost $0.0007 and $0.0021 |
| Four-digit numbers whose digits sum to 9 | Both passed | Claude Sonnet 5.5, 1.5×took 2.7 s and 1.8 s | GPT-6.1 Sol, 2.4×cost $0.0011 and $0.0026 |
| The highest of three dice is a 5 | Both passed | Closetook 1.8 s and 1.7 s | GPT-6.1 Sol, 2.7×cost $0.0008 and $0.0022 |
| An article in three bullets | Both passed | Closetook 2.0 s and 1.9 s | GPT-6.1 Sol, 3.4×cost $0.0009 and $0.0031 |
| An email thread in one sentence | Only GPT-6.1 Sol | Claude Sonnet 5.5, 1.2×took 1.7 s and 1.4 s | GPT-6.1 Sol, 3.2×cost $0.0007 and $0.0023 |
| Decisions and action items from a meeting | Both passed | Closetook 2.3 s and 2.2 s | GPT-6.1 Sol, 3.4×cost $0.0013 and $0.0043 |
| A quarterly memo for the CEO | Both passed | Claude Sonnet 5.5, 1.3×took 2.4 s and 1.8 s | GPT-6.1 Sol, 3.0×cost $0.0012 and $0.0037 |
| A study with a negative result | Both passed | GPT-6.1 Sol, 1.4×took 1.7 s and 2.4 s | GPT-6.1 Sol, 3.8×cost $0.0009 and $0.0034 |
| The region with the most revenue | Both passed | Claude Sonnet 5.5, 1.6×took 3.8 s and 2.4 s | GPT-6.1 Sol, 3.4×cost $0.0015 and $0.0051 |
| Average order value in August | Both passed | Claude Sonnet 5.5, 1.2×took 2.1 s and 1.7 s | GPT-6.1 Sol, 3.4×cost $0.0011 and $0.0037 |
| Revenue change from July to August | Both passed | Claude Sonnet 5.5, 1.3×took 3.0 s and 2.3 s | GPT-6.1 Sol, 3.4×cost $0.0014 and $0.0048 |
| A median, filtered two ways | Both passed | Claude Sonnet 5.5, 1.2×took 1.9 s and 1.5 s | GPT-6.1 Sol, 2.9×cost $0.0010 and $0.0030 |
| Correlation between ad spend and sign-ups | Both passed | Claude Sonnet 5.5, 1.5×took 6.5 s and 4.2 s | GPT-6.1 Sol, 2.4×cost $0.0029 and $0.0070 |
| A late order | Only Claude Sonnet 5.5 | Claude Sonnet 5.5, 1.3×took 3.2 s and 2.5 s | GPT-6.1 Sol, 3.4×cost $0.0011 and $0.0038 |
| A return inside the window | Both passed | GPT-6.1 Sol, 1.1×took 2.0 s and 2.2 s | GPT-6.1 Sol, 4.1×cost $0.0009 and $0.0035 |
| A frustrated customer | Neither passed | Closetook 2.9 s and 2.7 s | GPT-6.1 Sol, 3.5×cost $0.0012 and $0.0042 |
| A refund request outside the window | Only Claude Sonnet 5.5 | Claude Sonnet 5.5, 1.6×took 3.3 s and 2.0 s | GPT-6.1 Sol, 2.6×cost $0.0014 and $0.0038 |
| A message with a planted instruction | Both passed | GPT-6.1 Sol, 1.8×took 3.4 s and 6.1 s | GPT-6.1 Sol, 5.2×cost $0.0015 and $0.0079 |
| A delivery message into Spanish | Both passed | Claude Sonnet 5.5, 2.1×took 3.2 s and 1.5 s | GPT-6.1 Sol, 2.7×cost $0.0012 and $0.0032 |
| A product description into French | Both passed | Claude Sonnet 5.5, 1.7×took 3.0 s and 1.8 s | GPT-6.1 Sol, 2.6×cost $0.0012 and $0.0032 |
| A meeting note into German | Both passed | Claude Sonnet 5.5, 1.7×took 3.9 s and 2.3 s | GPT-6.1 Sol, 2.3×cost $0.0017 and $0.0038 |
| Idioms into natural Japanese | Both passed | GPT-6.1 Sol, 1.2×took 2.4 s and 2.9 s | GPT-6.1 Sol, 4.6×cost $0.0010 and $0.0046 |
| A lease clause into Brazilian Portuguese | Both passed | GPT-6.1 Sol, 1.2×took 3.7 s and 4.4 s | GPT-6.1 Sol, 4.1×cost $0.0015 and $0.0063 |
| Customers in one country | Both passed | GPT-6.1 Sol, 1.5×took 1.2 s and 1.8 s | GPT-6.1 Sol, 3.9×cost $0.0006 and $0.0024 |
| Count orders by status | Both passed | Claude Sonnet 5.5, 1.5×took 1.5 s and 1.0 s | GPT-6.1 Sol, 4.0×cost $0.0006 and $0.0024 |
| Revenue by category | Both passed | Closetook 1.7 s and 1.6 s | GPT-6.1 Sol, 4.3×cost $0.0009 and $0.0039 |
| Every customer, even those without orders | Both passed | GPT-6.1 Sol, 1.2×took 1.9 s and 2.3 s | GPT-6.1 Sol, 4.7×cost $0.0009 and $0.0043 |
| Monthly revenue with a running total | Both passed | Claude Sonnet 5.5, 1.5×took 4.0 s and 2.7 s | GPT-6.1 Sol, 3.1×cost $0.0019 and $0.0060 |
| A fact from one section | Both passed | Closetook 1.3 s and 1.4 s | GPT-6.1 Sol, 3.7×cost $0.0007 and $0.0027 |
| Core hours and start times | Both passed | Closetook 1.3 s and 1.4 s | GPT-6.1 Sol, 3.4×cost $0.0008 and $0.0027 |
| Two sections in one answer | Both passed | Closetook 1.2 s and 1.3 s | GPT-6.1 Sol, 3.2×cost $0.0008 and $0.0027 |
| A later amendment changes the answer | Both passed | Closetook 1.3 s and 1.2 s | GPT-6.1 Sol, 3.6×cost $0.0009 and $0.0031 |
| A question the handbook doesn't answer | Both passed | Claude Sonnet 5.5, 1.8×took 2.4 s and 1.4 s | GPT-6.1 Sol, 3.8×cost $0.0007 and $0.0028 |
| Pick the tool and work out the date | Both passed | Closetook 1.2 s and 1.3 s | GPT-6.1 Sol, 3.4×cost $0.0006 and $0.0021 |
| Convert a currency | Both passed | Claude Sonnet 5.5, 1.2×took 1.2 s and 1.0 s | GPT-6.1 Sol, 3.5×cost $0.0006 and $0.0021 |
| Book a meeting from a sentence | Both passed | Claude Sonnet 5.5, 1.2×took 1.8 s and 1.5 s | GPT-6.1 Sol, 3.0×cost $0.0009 and $0.0026 |
| Search, but don't book | Both passed | GPT-6.1 Sol, 1.1×took 1.3 s and 1.4 s | GPT-6.1 Sol, 3.4×cost $0.0007 and $0.0023 |
| Two calls with a unit conversion | Both passed | GPT-6.1 Sol, 1.4×took 2.7 s and 3.7 s | GPT-6.1 Sol, 4.4×cost $0.0009 and $0.0038 |
GPT-6.1 Sol vs Claude Sonnet 5.5 in our test runs
GPT-6.1 Sol and Claude Sonnet 5.5 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-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|
| 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 | 4 of 5 |
| Data analysis | 5 of 5 | 5 of 5 |
| Customer support | 2 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 | 46 of 50 · 1 message each · $0.0012 a reply | 47 of 50 · 1 message each · $0.0038 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.
GPT-6.1 Sol
Failed: Graded 3.7 of 5 on average (lowest 1).
Hi, I’m sorry your rain jacket hasn’t arrived. Standard delivery takes 3–5 business days, so your order is overdue. Please send us your order number so we can check the tracking and investigate the delay. Sam, Northwind support
513 tokens in, 124 out (68 of them reasoning) · 3.2 s · $0.0011 · 1 message on Pro · answered by openai/gpt-6.1-sol via OpenAI ·
Claude Sonnet 5.5
Passed: Graded 5.0 of 5 on average (lowest 5).
Hi there, I'm sorry your rain jacket hasn't arrived. Standard delivery takes 3 to 5 business days, so at 9 business days your order is well past that window. Since it's more than 7 business days late, you're eligible for free express shipping on your next order. I'm happy to note that on your account. I don't have tracking details in front of me, so please send me your order number and I'll look into where the package is and what's causing the delay. If it turns out to be lost, we'll work out the next steps for you, such as a replacement or a refund. Thanks for your patience, and sorry again for the trouble. Sam, Northwind support
717 tokens in, 207 out · 2.5 s · $0.0038 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
GPT-6.1 Sol and Claude Sonnet 5.5 on every plan
Whether the one-time free trial reaches each model, then each paid plan's messages on it.
| Plan | Price | GPT-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|---|
| 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
GPT-6.1 Sol takes up to 1.05M tokens; Claude Sonnet 5.5 up to 1M 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-6.1 Sol: Sent to OpenAI directly. Claude Sonnet 5.5: Sent to Anthropic directly.
Fact by fact
| Fact | GPT-6.1 Sol | Claude Sonnet 5.5 |
|---|---|---|
| Context window | 1.05M tokens | 1M 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 | $2.00 in / $10.00 out per million tokens |
| A typical message at API prices (4,000 tokens in, 700 out) | $0.0150 | $0.0150 |
| A $10 top-up adds | 100 messages | 100 messages |
| Where a message goes | Sent to OpenAI directly. | Sent to Anthropic 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-6.1 Sol through OpenRouter instead. | If Anthropic fails before the reply starts (an overload, a server error, a dropped connection), llmwise sends the same request to Claude Sonnet 5.5 through OpenRouter instead. |
| Anthropic's safety fallback | Doesn't apply | Anthropic's safety system can pass a Claude Sonnet 5.5 message to another Claude model. The reply then names the model that answered and says what you were charged for. |
GPT-6.1 Sol or Claude Sonnet 5.5?
From the facts above and our test runs: the rest is how their answers suit your work, which one chat can show you.
On the facts llmwise keeps, GPT-6.1 Sol and Claude Sonnet 5.5 are level: same count, same files, same context. Pick the one whose answers you prefer.
Each model's page, the families, and other pairs
GPT-6.1 Sol vs Claude Sonnet 5.5 is one pair of models. The page below covers the whole families.
- GPT-6.1 Sol: price, limits and messages on every plan
- Claude Sonnet 5.5: price, limits and messages on every plan
- Claude vs ChatGPT
- GPT-6.1 Sol vs GPT-6 Sol
- GPT-6 Astra vs GPT-6.1 Sol
- Claude Sonnet 5.5 vs GPT-6 Sol
- Claude Sonnet 5.5 vs Claude Sonnet 5
- Claude Opus 5.5 vs Claude Sonnet 5.5
- Every model-vs-model page
GPT-6.1 Sol is a GPT model; Claude Sonnet 5.5 is a Claude model.
Questions
Is GPT-6.1 Sol or Claude Sonnet 5.5 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-6.1 Sol and Claude Sonnet 5.5 for free?
Yes: both are in the free trial of 5 messages.
Which has the bigger context window, GPT-6.1 Sol or Claude Sonnet 5.5?
GPT-6.1 Sol: 1.05M tokens, against 1M 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-6.1 Sol and Claude Sonnet 5.5 in the same chat?
Yes. Pick GPT-6.1 Sol for one message and Claude Sonnet 5.5 for the next; the second sees the whole chat, including the first one's answer.
Which did better in your test runs, GPT-6.1 Sol or Claude Sonnet 5.5?
On the same 50 prompts, run on September 29, 2026, GPT-6.1 Sol passed 46 and Claude Sonnet 5.5 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.