Grok Voice 3.0vsPhonic v1

Grok Voice 3.0 is more reliable, by 13.4 points. Grok Voice 3.0 passed 67 of 82 scenarios on all three runs, and Phonic v1 passed 56. 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, data accuracy, interruption, response time and cost, and Phonic v1 on agent responses. The two tie on calls where the agent went quiet.

Grok Voice 3.0, by 9.9 points. Grok Voice 3.0 saved everything exactly right on 87.3% of the calls that save data, and Phonic v1 on 77.4%. On Booking calls, 98.2% against 98.2%. On Medicare calls, 59.1% against 25.0%. A call counts only when nothing is missing, wrong, extra or saved twice.

Yes. Grok Voice 3.0 starts replying 0.26s sooner at the median. Grok Voice 3.0 takes 1.34s at the median and 1.62s at p90; Phonic v1 takes 1.60s and 1.88s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

Grok Voice 3.0, by 0.09 on a 0 to 5 scale. Grok Voice 3.0 scores 4.98 and Phonic v1 4.89 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 0.0% of Grok Voice 3.0 calls and 0.0% of Phonic v1 calls.

Grok Voice 3.0 is $0.060 cheaper a minute. Grok Voice 3.0 costs $0.080 a minute of call and Phonic v1 $0.140, 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, 3,198 calls across the benchmark. A call passes only when the agent said the right things and saved the right data.