Tested prompt · Writing
Decline a meeting and offer two times: every AI model's reply, tested
We sent this everyday writing prompt to all 20 models in llmwise, the same way the app sends a message, and checked every reply the same way. Here's each one as it came, with whether it passed, what it cost and how long it took.
Based on 20 of our test runs on , through OpenRouter with the app's own prompt and settings. Updated .
Short answer
All 20 models passed this writing prompt's check (rubric). The cheapest reply that passed was GPT-6 Luna's, at $0.000072, and the fastest too, in 1.3 s. The dearest reply, Claude Fable 5.1's, cost 203 times as much ($0.0145).
The prompt, as sent, and its check
Checked by rubric (graded), the same way for every model.
Decline a meeting and offer two times (everyday)
Write an email to Tom declining his invitation to a vendor demo on Wednesday at 11:00, because you're presenting to the board then. Offer Thursday at 10:00 or Friday at 14:00 instead. Polite and brief: at most 120 words.
Graded on:
- Declines well: Declines clearly and politely, and says why.
- Alternatives: Offers both alternative times correctly.
- Brief: Brief and natural, like a real email.
Exactly what this prompt's replies are checked against, with every other prompt of our test runs.
Every model's result
All 20 models on this prompt, in catalog order.
| Model | Result | Cost | Time | Reply |
|---|---|---|---|---|
| Claude Fable 5.1Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0145 | 4.7 s | 182 tokens |
| Claude Opus 5.5Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0056 | 4.1 s | 173 tokens |
| Claude Sonnet 5.5Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0030 | 2.3 s | 194 tokens |
| Claude Sonnet 5Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0026 | 2.8 s | 149 tokens |
| Claude Haiku 5.5Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00014 | 1.3 s | 165 tokens |
| Claude Haiku 4.5Anthropic | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00098 | 2.0 s | 112 tokens |
| GPT-6 AstraOpenAI | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0079 | 3.3 s | 79 tokens |
| GPT-6.1 SolOpenAI | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00075 | 1.8 s | 70 tokens |
| GPT-6 SolOpenAI | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0014 | 1.3 s | 63 tokens |
| GPT-6 LunaOpenAI | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.000072 | 1.3 s | 64 tokens |
| Gemini 4 ArgonGoogle | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0013 | 3.6 s | 124 tokens |
| Gemini 3.1 Pro (preview)Google | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0058 | 6.2 s | 105 tokens |
| Gemini 3.8 FlashGoogle | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00077 | 3.5 s | 120 tokens |
| DeepSeek V4.1 FlashDeepSeek | Passed: Graded 4.7 of 5 on average (lowest 4). | $0.00022 | 2.2 s | 129 tokens |
| DeepSeek V4 ProDeepSeek | Passed: Graded 4.7 of 5 on average (lowest 4). | $0.00059 | 3.3 s | 82 tokens |
| Grok 4.7xAI | Passed: Graded 4.7 of 5 on average (lowest 4). | $0.0024 | 2.5 s | 70 tokens |
| Kimi K3Moonshot | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.0034 | 3.0 s | 104 tokens |
| GLM 5.3Z.ai | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00027 | 1.4 s | 95 tokens |
| GLM 5.3 FlashZ.ai | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00015 | 5.3 s | 111 tokens |
| Mistral Large 4Mistral | Passed: Graded 5.0 of 5 on average (lowest 5). | $0.00089 | 3.9 s | 76 tokens |
Cost: what OpenRouter charged us for the reply. Time: from sending to the whole reply. Reply: its length in tokens, thinking not counted. In llmwise you pay per message, not per token: each of these replies counted as one message on Pro.
Every reply
Every reply passed: here they are from the cheapest up.
GPT-6 Luna
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Vendor Demo Hi Tom, Thanks for the invitation. I’m presenting to the board on Wednesday at 11:00, so I can’t make the demo then. Would Thursday at 10:00 or Friday at 14:00 work instead? Best, [Your Name]
395 tokens in, 64 out · 1.3 s · $0.0001 · 1 message on Pro · answered by openai/gpt-6-luna via OpenAI ·
Claude Haiku 5.5
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo on Wednesday Hi Tom, Thank you for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I'm presenting to the board at that time, so I won't be able to attend. Would Thursday at 10:00 or Friday at 14:00 work for you instead? I'd be glad to reschedule. Thanks for understanding, and I look forward to hearing from you. Best regards, [Your Name]
545 tokens in, 165 out · 1.3 s · $0.0001 · 1 message on Pro · answered by anthropic/claude-haiku-5.5 via Anthropic ·
GLM 5.3 Flash
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo — Wednesday 11:00 Hi Tom, Thank you for the invitation to the vendor demo. Unfortunately, I have a board presentation at that time on Wednesday, so I won't be able to attend. If it's possible to reschedule, I'd be glad to join on Thursday at 10:00 or Friday at 14:00. Please let me know if either works for you and the vendor. Apologies for the conflict, and thank you for your flexibility. Best regards, [Your name]
411 tokens in, 158 out (47 of them reasoning) · 5.3 s · $0.0002 · 1 message on Pro · answered by z-ai/glm-5.3-flash via Wafer ·
DeepSeek V4.1 Flash
Passed: Graded 4.7 of 5 on average (lowest 4).
**Subject:** Re: Vendor demo invitation — Wednesday Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately I can't make it — I'm presenting to the board at that time. I'd still like to attend, if the demo can be rescheduled. Would Thursday at 10:00 or Friday at 14:00 work? Either suits me. If neither fits the vendor's schedule, let me know some other options and I'll do my best to work around them. Apologies for the inconvenience, and thanks for thinking of me. Best regards, [Your name]
434 tokens in, 135 out (6 of them reasoning) · 2.2 s · $0.0002 · 1 message on Pro · answered by deepseek/deepseek-v4.1-flash via Together ·
GLM 5.3
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo Wednesday Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I'm presenting to the board at that time, so I won't be able to attend. Would either Thursday at 10:00 or Friday at 14:00 work instead? I'm happy to make time on either day. Sorry for the inconvenience, and thanks for understanding. Best regards, [Your Name]
410 tokens in, 95 out · 1.4 s · $0.0003 · 1 message on Pro · answered by z-ai/glm-5.3 via Baidu ·
DeepSeek V4 Pro
Passed: Graded 4.7 of 5 on average (lowest 4).
Subject: Vendor demo – alternative times Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I’m presenting to the board at that time, so I won’t be able to join. Would Thursday at 10:00 or Friday at 14:00 work for you instead? I’m happy to make either time work. Best regards
406 tokens in, 120 out (38 of them reasoning) · 3.3 s · $0.0006 · 1 message on Pro · answered by deepseek/deepseek-v4-pro-0813 via Wafer ·
GPT-6.1 Sol
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Vendor Demo – Alternative Times Hi Tom, Thanks for the invitation. Unfortunately, I can’t attend the vendor demo on Wednesday at 11:00, as I’ll be presenting to the board then. Would Thursday at 10:00 or Friday at 14:00 work instead? Best, [Your Name]
397 tokens in, 70 out · 1.8 s · $0.0007 · 1 message on Pro · answered by openai/gpt-6.1-sol via OpenAI ·
Gemini 3.8 Flash
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Rescheduling vendor demo Hi Tom, Thanks for the invitation to the vendor demo. Unfortunately, I won’t be able to make it this Wednesday at 11:00 AM, as I have a board presentation scheduled at that time. I’m very interested in seeing the demo, though. Would it be possible to reschedule for either Thursday at 10:00 AM or Friday at 2:00 PM? Let me know if either of those times works for you and the vendor. Best regards, [Your Name]
428 tokens in, 120 out · 3.5 s · $0.0008 · 1 message on Pro · answered by google/gemini-3.8-flash via Google ·
Mistral Large 4
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo – Wednesday at 11:00 Hi Tom, Thanks for the invitation to the vendor demo. Unfortunately, I can't make Wednesday at 11:00, as I'm presenting to the board at that time. Would Thursday at 10:00 or Friday at 14:00 work for you instead? Happy to reschedule around either. Best regards, [Your name]
400 tokens in, 295 out (219 of them reasoning) · 3.9 s · $0.0009 · 1 message on Pro · answered by mistralai/mistral-large-4-0 via Mistral ·
Claude Haiku 4.5
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo Invitation – Wednesday Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I have a board presentation scheduled at that time and won't be able to attend. I'm interested in seeing the demo though. Would either of these times work for you instead? - Thursday at 10:00 - Friday at 14:00 Let me know what suits your schedule best, and I'll get it on my calendar. Best regards
425 tokens in, 112 out · 2.0 s · $0.0010 · 1 message on Pro · answered by anthropic/claude-haiku-4.5 via Amazon Bedrock ·
Gemini 4 Argon
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Rescheduling: Vendor Demo on Wednesday Hi Tom, Thanks for the invitation to the vendor demo. Unfortunately, I won't be able to make it this Wednesday at 11:00 as I'm presenting to the board at that time. If the demo can be moved, I'm available on Thursday at 10:00 or Friday at 14:00. If the time is already locked in with the vendor, please go ahead without me and share the recording or notes afterward. Best regards, [Your Name]
647 tokens in, 124 out · 3.6 s · $0.0013 · 1 message on Pro · answered by google/gemini-4-argon via Google AI Studio ·
GPT-6 Sol
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Vendor Demo Hi Tom, Thanks for the invitation. I’m presenting to the board on Wednesday at 11:00, so I can’t make the demo then. Would Thursday at 10:00 or Friday at 14:00 work instead? Best, [Your Name]
395 tokens in, 63 out · 1.3 s · $0.0014 · 1 message on Pro · answered by openai/gpt-6-sol via OpenAI ·
Grok 4.7
Passed: Graded 4.7 of 5 on average (lowest 4).
Subject: Re: Vendor demo — Wednesday Hi Tom, Thanks for the invitation. I’m presenting to the board on Wednesday at 11:00, so I can’t make the vendor demo then. Would Thursday at 10:00 or Friday at 14:00 work instead? Happy to join whichever is easier for you and the vendor. Best regards
1,630 tokens in, 144 out (74 of them reasoning) · 2.5 s · $0.0024 · 1 message on Pro · answered by x-ai/grok-4.7 via xAI ·
Claude Sonnet 5
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo – Wednesday 11:00 Hi Tom, Thanks for the invite! Unfortunately, I have a board presentation at that time on Wednesday, so I won't be able to join. Would Thursday at 10:00 or Friday at 14:00 work instead? Happy to make either one work on my end. Let me know what suits you, and I'll get it on the calendar. Best, [Your Name]
542 tokens in, 149 out · 2.8 s · $0.0026 · 1 message on Pro · answered by anthropic/claude-sonnet-5 via Claude Platform on AWS ·
Claude Sonnet 5.5
Passed: Graded 5.0 of 5 on average (lowest 5).
**Subject:** Re: Vendor Demo on Wednesday Hi Tom, Thank you for inviting me to the vendor demo on Wednesday at 11:00. Unfortunately, I won't be able to attend, as I'll be presenting to the board at that time. I'm still keen to see the demo, though. Would either of these work instead? - Thursday at 10:00 - Friday at 14:00 If neither suits, let me know what else is available and I'll do my best to make it work. Thanks again, and apologies for the inconvenience. Best regards, [Your name]
546 tokens in, 194 out · 2.3 s · $0.0030 · 1 message on Pro · answered by anthropic/claude-sonnet-5.5 via Anthropic ·
Kimi K3
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo Invitation Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I'll be presenting to the board at that time and won't be able to attend. Would either Thursday at 10:00 or Friday at 14:00 work instead? I'm happy to reschedule if neither suits you. Thanks for understanding, and I look forward to the demo. Best regards, [Your Name]
484 tokens in, 108 out (4 of them reasoning) · 3.0 s · $0.0034 · 1 message on Pro · answered by moonshotai/kimi-k3 via Fireworks ·
Claude Opus 5.5
Passed: Graded 5.0 of 5 on average (lowest 5).
**Subject:** Re: Vendor Demo – Wednesday at 11:00 Hi Tom, Thanks for the invitation to the vendor demo. Unfortunately, I can't make Wednesday at 11:00, as I'm presenting to the board at that time. I'd still like to see it, though. Would either of these work instead? - Thursday at 10:00 - Friday at 14:00 Let me know what suits you and the vendor, and I'll put it in my calendar. Best regards, [Your Name]
544 tokens in, 173 out · 4.1 s · $0.0056 · 1 message on Pro · answered by anthropic/claude-opus-5.5 via Claude Platform on AWS ·
Gemini 3.1 Pro
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Re: Vendor Demo Hi Tom, Thank you for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I won't be able to make it because I am presenting to the board at that time. Could we reschedule for later in the week? I am available on Thursday at 10:00 or Friday at 14:00. Let me know if either of those times works for you. Best, [Your Name]
428 tokens in, 415 out (310 of them reasoning) · 6.2 s · $0.0058 · 1 message on Pro · answered by google/gemini-3.1-pro-preview via Google ·
GPT-6 Astra
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Vendor Demo – Alternative Times Hi Tom, Thank you for the invitation to the vendor demo. Unfortunately, I’m presenting to the board on Wednesday at 11:00, so I won’t be able to attend then. Would Thursday at 10:00 or Friday at 14:00 work instead? Thanks for your flexibility. Best, [Your Name]
395 tokens in, 79 out · 3.3 s · $0.0079 · 1 message on Pro · answered by openai/gpt-6-astra via OpenAI ·
Claude Fable 5.1
Passed: Graded 5.0 of 5 on average (lowest 5).
Subject: Wednesday Vendor Demo Hi Tom, Thanks for the invitation to the vendor demo on Wednesday at 11:00. Unfortunately, I'm presenting to the board at that time and won't be able to attend. Would Thursday at 10:00 or Friday at 14:00 work instead? I'd still very much like to see the demo, so I'm happy to go with whichever suits you and the vendor better. Apologies for the inconvenience, and thanks for your flexibility. Best regards, [Your Name]
544 tokens in, 182 out · 4.7 s · $0.0145 · 1 message on Pro · answered by anthropic/claude-fable-5.1 via Anthropic ·
More writing prompts
The other writing prompts, each with every model's reply, and the results across all five.
Questions
Which AI does best on “Decline a meeting and offer two times”?
All 20 models passed this writing prompt's check (rubric). The cheapest reply that passed was GPT-6 Luna's, at $0.000072, and the fastest too, in 1.3 s. The dearest reply, Claude Fable 5.1's, cost 203 times as much ($0.0145).
What does a reply to “Decline a meeting and offer two times” cost?
Through the models' APIs, what OpenRouter charged us ran from $0.000072 (GPT-6 Luna) to $0.0145 (Claude Fable 5.1) for this prompt. In llmwise you don't pay by the token: a reply like these counts as one message on Pro, whichever model answers.
Claude, GPT, Gemini, DeepSeek, Grok, Kimi, GLM, and Mistral, 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.