Azure Realtime vs Amazon Nova 2 Sonic

Azure Realtime is more reliable, by 25.7 points. Azure Realtime handled 26 of 70 real callers well on all three runs, and Amazon Nova 2 Sonic 8. A caller only counts when every run of the call scored 80 or more.

For a voice agent, Azure Realtime, since it handles more real callers well on every run. Azure Realtime is ahead on ELO rating, hearing score, speaking score, task handling score, reliability, calls handled well, calls fully resolved, calls where the agent went quiet and median latency, and Amazon Nova 2 Sonic on turn taking score.

Azure Realtime, by 11.9 points higher. Azure Realtime fully resolved 25.7% of calls and Amazon Nova 2 Sonic 13.8%. A call counts only when every step the caller needed was done.

Yes. Azure Realtime starts replying 0.90s sooner at the median. Azure Realtime takes 1.86s at the median and 2.10s at p90; Amazon Nova 2 Sonic takes 2.76s and 3.40s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

Azure Realtime, by 1.0 points. The agent went quiet for 10 seconds or more on 6.2% of Azure Realtime calls and 7.1% of Amazon Nova 2 Sonic calls.

There is no verified per-minute rate for Amazon Nova 2 Sonic, so cost cannot be compared yet.

Cekura ran both as the whole agent with the same prompt, tools and phone connection. Both took the same 70 recorded real human callers on live calls, three times each. Each call is graded on 25 skills across Hearing, Turn Taking, Task Handling and Speaking, and passes at a score of 80 out of 100.