Grok Voice 3.0 vs Higgs Realtime

Grok Voice 3.0 is more reliable, by 25.6 points. Grok Voice 3.0 passed 67 of 82 scenarios on all three runs, and Higgs Realtime passed 46. A scenario only counts when every run of it passed.

For a voice agent, Grok Voice 3.0, since it gets more scenarios right on every run. Grok Voice 3.0 is ahead on reliability, success rate, agent responses, data accuracy, calls where the agent went quiet and response time, and Higgs Realtime on interruption and cost.

Grok Voice 3.0, by 21.1 points. Grok Voice 3.0 saved everything exactly right on 87.3% of the calls that save data, and Higgs Realtime on 66.2%. On Booking calls, 98.2% against 91.8%. On Medicare calls, 59.1% against 0.0%. A call counts only when nothing is missing, wrong, extra or saved twice.

Yes. Grok Voice 3.0 starts replying 0.60s sooner at the median. Grok Voice 3.0 takes 1.34s at the median and 1.62s at p90; Higgs Realtime takes 1.94s and 2.02s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

Higgs Realtime, by 0.02 on a 0 to 5 scale. Grok Voice 3.0 scores 4.98 and Higgs Realtime 5.00 for how well the agent handled being talked over.

Grok Voice 3.0, by 1.2 points. The agent went quiet for 10 seconds or more on 0.0% of Grok Voice 3.0 calls and 1.2% of Higgs Realtime calls.

Higgs Realtime is $0.0739 cheaper a minute. Grok Voice 3.0 costs $0.0800 a minute of call and Higgs Realtime $0.0061, at each vendor's published rates.

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.