Deepslate Opal vs Grok Voice Think Fast 2.0

Grok Voice Think Fast 2.0 is more reliable, by 15.7 points. Deepslate Opal handled 9 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, Grok Voice Think Fast 2.0, since it handles more real callers well on every run. Grok Voice Think Fast 2.0 is ahead of Deepslate Opal on all 11 metrics.

Grok Voice Think Fast 2.0, by 10.5 points higher. Deepslate Opal fully resolved 12.4% 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 1.02s sooner at the median. Deepslate Opal takes 2.46s at the median and 3.16s 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.

Grok Voice Think Fast 2.0, by 7.6 points. The agent went quiet for 10 seconds or more on 16.2% of Deepslate Opal calls and 8.6% of Grok Voice Think Fast 2.0 calls.

Grok Voice Think Fast 2.0 is $0.032 cheaper a minute. Deepslate Opal costs $0.112 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.