GPT-Live 1 + GPT-6 SolOpenAI
Wins 8 of 11- Reliability (Pass³)
- 32.9%
- Latency P50
- 2.27s
- Cost per Minute (USD)
- $0.055
GPT-Live 1 + GPT-6 Sol vs Grok Voice Think Fast 2.0
Grok Voice Think Fast 2.0xAI
Wins 3 of 11- Reliability (Pass³)
- 28.6%
- Latency P50
- 1.44s
- Cost per Minute (USD)
- $0.080
GPT-Live 1 + GPT-6 Sol is ahead on ELO rating, hearing score, speaking score, task handling score, reliability, calls handled well, calls fully resolved and cost, and Grok Voice Think Fast 2.0 on turn taking score, calls where the agent went quiet and median latency.
Last updated Methodology by Dileep Chagam
Who is better at what
GPT-Live 1 + GPT-6 SolGrok Voice Think Fast 2.0
- ELO Rating10691030
- Hearing7166
- Turn Taking7278
- Speaking8382
- Task Handling8270
- Reliability (Pass³)32.9%28.6%
- Pass Rate (score ≥ 80)58.6%51.9%
- Task Completion Rate36.2%22.9%
- Dead-Air Rate (≥ 10 s)13.3%8.6%
- Latency P502.27s1.44s
- Cost per Minute (USD)$0.055$0.080
Results by call
Right every time, on booking and Healthcare calls
Banking callsHealthcare calls
- GPT-Live 1 + GPT-6 Sol
- Banking calls
- 28.6%
- Healthcare calls
- 37.1%
- Gap
- 8.6 points
29%37%GPT-Live 1 + GPT-6 Sol - Grok Voice Think Fast 2.0
- Banking calls
- 22.9%
- Healthcare calls
- 34.3%
- Gap
- 11.4 points
23%34%Grok Voice Think Fast 2.0
Related Comparisons
Each model on its own: GPT-Live 1 + GPT-6 Sol and Grok Voice Think Fast 2.0
GPT-Live 1 + GPT-6 Sol vs Grok Voice Think Fast 2.0 FAQ
Is GPT-Live 1 + GPT-6 Sol or Grok Voice Think Fast 2.0 more reliable?
GPT-Live 1 + GPT-6 Sol is more reliable, by 4.3 points. GPT-Live 1 + GPT-6 Sol handled 23 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.
GPT-Live 1 + GPT-6 Sol is more reliable, by 4.3 points. GPT-Live 1 + GPT-6 Sol handled 23 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, GPT-Live 1 + GPT-6 Sol, since it handles more real callers well on every run. GPT-Live 1 + GPT-6 Sol is ahead on ELO rating, hearing score, speaking score, task handling score, reliability, calls handled well, calls fully resolved and cost, and Grok Voice Think Fast 2.0 on turn taking score, calls where the agent went quiet and median latency.
GPT-Live 1 + GPT-6 Sol, by 13.3 points higher. GPT-Live 1 + GPT-6 Sol fully resolved 36.2% 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 0.83s sooner at the median. GPT-Live 1 + GPT-6 Sol takes 2.27s at the median and 2.72s 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 4.8 points. The agent went quiet for 10 seconds or more on 13.3% of GPT-Live 1 + GPT-6 Sol calls and 8.6% of Grok Voice Think Fast 2.0 calls.
GPT-Live 1 + GPT-6 Sol is $0.025 cheaper a minute. GPT-Live 1 + GPT-6 Sol costs $0.055 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.
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