GPT Realtime 2.1 Mini vs Phonic-1

Phonic-1 is more reliable, by 17.1 points. GPT Realtime 2.1 Mini handled 10 of 70 real callers well on all three runs, and Phonic-1 22. A caller only counts when every run of the call scored 80 or more.

For a voice agent, Phonic-1, since it handles more real callers well on every run. Phonic-1 is ahead on ELO rating, hearing score, turn taking score, task handling score, reliability, calls handled well, calls fully resolved and median latency, and GPT Realtime 2.1 Mini on speaking score and calls where the agent went quiet.

Phonic-1, by 11.0 points higher. GPT Realtime 2.1 Mini fully resolved 13.8% of calls and Phonic-1 24.8%. A call counts only when every step the caller needed was done.

No. Phonic-1 starts replying 0.41s sooner at the median. GPT Realtime 2.1 Mini takes 2.40s at the median and 2.88s at p90; Phonic-1 takes 1.99s and 2.32s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

GPT Realtime 2.1 Mini, by 1.9 points. The agent went quiet for 10 seconds or more on 9.0% of GPT Realtime 2.1 Mini calls and 11.0% of Phonic-1 calls.

There is no verified per-minute rate for Phonic-1, 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.