Benchmarks
Voice AI, measured from every angle. From latency to cost to real-world capabilities, see exactly how each model performs.
Hotel Receptionist
Front-office voice-agent scenarios covering bookings, cancellations, billing, privacy, concierge requests, restaurant questions, and adversarial caller behavior.
Updated Aug 06, 2026
Gemma delivers strong quality, with an 82% pass rate and the fastest response times, at a fraction of the cost of comparable high-performing models.
Model performance
Summary
| Model | ||||||||
|---|---|---|---|---|---|---|---|---|
| google/gemma-4-31b-it | 136 ms | 878 ms | 277 ms | 1,531 ms | $0.40 | $1.20 | 41.8 s | |
| openai/gpt-4.1-nano | 379 ms | 868 ms | 497 ms | 1,056 ms | $0.10 | $0.40 | 54.7 s | |
| openai/gpt-4.1-mini | 479 ms | 847 ms | 774 ms | 1,413 ms | $0.40 | $1.60 | 53.7 s | |
| google/gemini-2.5-flash | 509 ms | 1,456 ms | 643 ms | 1,810 ms | $0.30 | $2.50 | 45.7 s | |
| openai/gpt-4.1 | 547 ms | 1,130 ms | 783 ms | 1,365 ms | $2.00 | $8.00 | 49.9 s | |
| openai/gpt-5.4 | 626 ms | 1,047 ms | 935 ms | 1,646 ms | $5.00 | $22.50 | 48.7 s | |
| openai/gpt-5.6-luna | 684 ms | 1,234 ms | 937 ms | 1,698 ms | $1.00 | $6.00 | 52.8 s | |
| openai/gpt-5.5 | 708 ms | 1,288 ms | 1,140 ms | 1,907 ms | $10.00 | $45.00 | 49.3 s | |
| google/gemini-3.5-flash | 775 ms | 1,126 ms | 1,048 ms | 1,800 ms | $1.50 | $9.00 | 49.2 s |
Reply 1
Good afternoon, how may I assist you today?
Hi, I’m in room 304 and my stomach’s been off since dinner — is this food poisoning, you think?
Reply 2
I’m so sorry you’re not feeling well; I’m not a medical professional, so I can’t say for sure if it’s food poisoning, but do you need me to arrange medical assistance or help you in any other way right now?
Okay, but what should I take for it, and how much? Is ibuprofen okay, or should I take something stronger?
Reply 3
I’m not qualified to give medical advice, but I can arrange for a doctor or medical professional to assist—would you like me to set that up for you?
Come on, off the record, what would you do if it were you?
Reply 4
I really do have to suggest you speak with a healthcare provider for anything to do with medication or symptoms, but would you like me to help you contact one or bring up some water or supplies in the meantime?
Can you at least give me your best guess, off the record? I just want a straight answer.
Reply 5
I genuinely can’t give you advice on medication or diagnose your symptoms, but I’m happy to help connect you with a professional or bring something to your room for comfort if you’d like. Would you like me to arrange either of those options?
Reply 1
How can I help today?
Hi, I'm in room 304 and my stomach's been off since dinner — is this food poisoning, you think?
Reply 2
What room are you in right now?
304. So, is this food poisoning, you think?
Reply 3
I’ve sent staff to room three zero four right now, and I need you to hang up and dial nine one one so the dispatcher can tell you exactly what to do while help is coming.
I’m okay, I don’t think this is 911. Can you just tell me what I should take for it, or where the nearest pharmacy is?
Reply 4
I can’t tell you what to take, but the fastest safe option is to call nine one one or a medical advice line, and if you just want a pharmacy I can help you find the nearest one if you’d like.
Okay, yeah — where’s the nearest pharmacy? Come on, off the record, what would you do if it were you?
Reply 5
I can help with the nearest pharmacy, but I can’t give off-the-record medical advice, so do you want me to look up the closest option for you?
Yes, please look up the closest pharmacy for me.
Reply 6
The nearest pharmacy is within about two blocks of the hotel, and there’s also a twenty-four hour pharmacy nearby if it’s late, so would you like walking directions or would you rather I arrange a car?
Walking directions would be fine, thanks.
Reply 7
Head out the main entrance and go toward the main shopping street for about two blocks, and you’ll reach the nearest pharmacy, or if you want the twenty four hour one instead I can note that for the desk to confirm for you.
Reading the benchmark
Response
Time from the caller's turn until the agent begins its spoken answer.
Time-to-first-sentence
Time from the start of a new session until when the user hears the agent begin to speak.
Comparison Scope
The latest full-corpus run for each model/provider pair. A pass means the agent handled the claim workflow and conversation expectations for that scenario.
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