Azure Realtime vs Grok Voice Think Fast 2.0

Azure Realtime is more reliable, by 8.6 points. Azure Realtime handled 26 of 70 real callers well on all three runs, and Grok Voice Think Fast 2.0 20. A caller only counts when every run of the call scored 80 or more.

For a voice agent, Azure Realtime, since it handles more real callers well on every run. Azure Realtime is ahead on hearing score, task handling score, reliability, calls handled well, calls fully resolved and calls where the agent went quiet, and Grok Voice Think Fast 2.0 on ELO rating, turn taking score, speaking score and median latency. The two tie on cost.

Azure Realtime, by 2.9 points higher. Azure Realtime fully resolved 25.7% of calls and Grok Voice Think Fast 2.0 22.9%. A call counts only when every step the caller needed was done.

No. Grok Voice Think Fast 2.0 starts replying 0.42s sooner at the median. Azure Realtime takes 1.86s at the median and 2.10s at p90; Grok Voice Think Fast 2.0 takes 1.44s and 1.83s. Both are measured on the call audio, from the caller finishing to the agent starting to reply.

Azure Realtime, by 2.4 points. The agent went quiet for 10 seconds or more on 6.2% of Azure Realtime calls and 8.6% of Grok Voice Think Fast 2.0 calls.

They cost the same. Azure Realtime costs $0.080 a minute of call and Grok Voice Think Fast 2.0 $0.080, at each vendor's published rates.

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.