Higgs Realtime vs GPT Realtime 2.1 Mini

Higgs Realtime is more reliable, by 6.1 points. Higgs Realtime passed 46 of 82 scenarios on all three runs, and GPT Realtime 2.1 Mini 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, calls where the agent went quiet, interruption, response time and cost, and GPT Realtime 2.1 Mini on agent responses.

Higgs Realtime, by 1.7 points. Higgs Realtime saved everything exactly right on 66.2% of the calls that save data, and GPT Realtime 2.1 Mini on 64.5%. On Booking calls, 91.8% against 88.8%. On Medicare calls, 0.0% against 0.0%. A call counts only when nothing is missing, wrong, extra or saved twice.

Yes. Higgs Realtime starts replying 0.14s sooner at the median. Higgs Realtime takes 1.94s at the median and 2.02s at p90; GPT Realtime 2.1 Mini takes 2.08s and 2.75s. 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 GPT Realtime 2.1 Mini 4.99 for how well the agent handled being talked over.

Higgs Realtime, by 1.2 points. The agent went quiet for 10 seconds or more on 1.2% of Higgs Realtime calls and 2.5% of GPT Realtime 2.1 Mini calls.

Higgs Realtime is $0.0141 cheaper a minute. Higgs Realtime costs $0.0061 a minute of call and GPT Realtime 2.1 Mini $0.0202, 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.