Higgs Realtime vs Amazon Nova 2 Sonic

Higgs Realtime is more reliable, by 6.1 points. Higgs Realtime passed 46 of 82 scenarios on all three runs, and Amazon Nova 2 Sonic passed 41. A scenario only counts when every run of it passed.

For a voice agent, Higgs Realtime, since it gets more scenarios right on every run. Higgs Realtime is ahead on reliability, success rate, data accuracy, interruption and response time, and Amazon Nova 2 Sonic on agent responses. The two tie on calls where the agent went quiet.

Higgs Realtime, by 6.3 points. Higgs Realtime saved everything exactly right on 66.2% of the calls that save data, and Amazon Nova 2 Sonic on 59.9%. On Booking calls, 91.8% against 82.5%. On Medicare calls, 0.0% against 1.5%. A call counts only when nothing is missing, wrong, extra or saved twice.

Yes. Higgs Realtime starts replying 0.24s sooner at the median. Higgs Realtime takes 1.94s at the median and 2.02s at p90; Amazon Nova 2 Sonic takes 2.18s and 2.76s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

Higgs Realtime, by 0.01 on a 0 to 5 scale. Higgs Realtime scores 5.00 and Amazon Nova 2 Sonic 4.99 for how well the agent handled being talked over.

They go quiet on the same share of calls. The agent went quiet for 10 seconds or more on 1.2% of Higgs Realtime calls and 1.2% 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 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, 3,690 calls across the benchmark. A call passes only when the agent said the right things and saved the right data.