Azure Realtime is ahead of Gemini 3.8 Live Extended Thinking on reliability, success rate, agent responses, data accuracy, stalled calls, interruption and response time.
Last updated Methodology by Dileep Chagam
Azure Realtime is the better pick over Gemini 3.8 Live Extended Thinking on every measure that separates them: reliability across repeated calls (18.3 points higher), calls that pass every check (8.1 points higher), getting the agent's replies right (10.2 points higher), saving the caller's data correctly (1.7 points higher), fewer stalled calls (1.2 points lower), handling interruptions (0.01 higher) and fast replies (0.41s sooner).
Scenarios that passed on all three runs.
Azure Realtime, 18.3 points higher
Calls that passed every check.
Azure Realtime, 8.1 points higher
Calls where the agent's replies reached the expected outcome.
Azure Realtime, 10.2 points higher
Calls where everything the agent saved matched exactly.
Azure Realtime, 1.7 points higher
Calls where the agent went silent for 10 seconds or more.
Azure Realtime, 1.2 points lower
How well it handled being talked over, 0 to 5.
Azure Realtime, 0.01 higher
Median time to start replying after the caller finishes.
Azure Realtime, 0.41s sooner
One minute of call at the vendor's published rates.
Not comparable
The small figure is the place among ranked models. The cascade is not ranked.
Azure Realtime 1.66s, Gemini 3.8 Live Thinking 2.07s at the median.
Azure Realtime is more reliable, by 18.3 points. Azure Realtime passed 58 of 82 scenarios on all three runs, and Gemini 3.8 Live Extended Thinking passed 43. A scenario only counts when every run of it passed.
For a phone agent, Azure Realtime, since it gets more scenarios right on every run. Azure Realtime is ahead of Gemini 3.8 Live Extended Thinking on reliability, success rate, agent responses, data accuracy, stalled calls, interruption and response time.
Azure Realtime, by 1.7 points. Azure Realtime saved everything exactly right on 86.1% of the calls that save data, and Gemini 3.8 Live Extended Thinking on 84.4%. On Appointments, 94.2% against 88.9%. On Medicare, 65.2% against 72.7%. A call counts only when nothing is missing, wrong, extra or saved twice.
Yes. Azure Realtime starts replying 0.41s sooner at the median. Azure Realtime takes 1.66s at the median and 2.22s at p90; Gemini 3.8 Live Extended Thinking takes 2.07s and 2.74s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.
Azure Realtime, by 0.01 on a 0 to 5 scale. Azure Realtime scores 4.96 and Gemini 3.8 Live Extended Thinking 4.95 for how well the agent handled being talked over.
Azure Realtime, by 1.2 points. The agent went silent for 10 seconds or more on 4.1% of Azure Realtime calls and 5.3% of Gemini 3.8 Live Extended Thinking calls.
There is no verified per-minute rate for Gemini 3.8 Live Extended Thinking, so cost cannot be compared yet.
Cekura ran both as the whole agent in the same open-source Pipecat pipeline, with the same prompt, tools and connection. A simulated caller worked through all 82 scenarios on live calls, three times each, 2,952 calls across the benchmark. A call passes only when the agent said the right things and saved the right data.
