Gemini Live
- Strength
- Second-highest repetition score at 4.78/5 across 174 scored calls.
- What can be improved
- One rerun had no latency evidence and scored 0/5 for both task outcome and tool accuracy.
Speech-to-speech setup
- reasoning: high
- hybrid VAD
All platform comparisons
Gemini Live · ranked 8 of 8Telnyx · ranked 4 of 8
Gemini Live vs Telnyx
Telnyx is ahead on repeatable reliability, task completion, infrastructure reliability, tool call accuracy and response time, and Gemini Live on interruption handling.
Last updated Methodology by Luis Ojeda
Verdict
Which to pick
Pick Gemini Live for handling interruptions (0.34 higher). Pick Telnyx for reliability across repeated runs (37.80 points higher), completing the caller's task (9.76 points higher), calls that connect and stay up (27.64 points higher), accurate tool calls (0.31 higher) and fast replies (1.23s faster).
Head to head
Every metric, side by side
Bars share one scale across all 8 platforms. The place next to each figure is its rank in the field.
Repeatable reliability
Share of the 82 scenarios that passed on all three runs.
- Gemini Live
- 30.49%8th
- Telnyx
- 68.29%4th
Telnyx, 37.80 points higher
Task completion
Calls where the expected outcome was fully reached.
- Gemini Live
- 87.80%8th
- Telnyx
- 97.56%1st
Telnyx, 9.76 points higher
Infrastructure-clean calls
Calls with no connection, audio or platform failure.
- Gemini Live
- 72.36%8th
- Telnyx
- 100.00%1st
Telnyx, 27.64 points higher
Tool call accuracy
Mean score for calling the right tool with the right arguments.
- Gemini Live
- 4.40/57th
- Telnyx
- 4.71/53rd
Telnyx, 0.31 higher
Voice tone and clarity
Mean score for how clear and natural the agent sounds.
- Gemini Live
- Not scored
- Telnyx
- 4.21/55th
Not comparable
Interruption handling
Mean score for yielding and recovering when the caller cuts in.
- Gemini Live
- 4.97/53rd
- Telnyx
- 4.63/58th
Gemini Live, 0.34 higher
Mean response time
Mean time for the agent to start replying after the caller stops.
- Gemini Live
- 3.05s7th
- Telnyx
- 1.82s3rd
Telnyx, 1.23s faster
246 calls per platform: 82 scenarios, 3 runs each.
On the calls
What each platform ran, and what we saw
Telnyx
- Strength
- Tied for first in task completion at 97.56% across all 246 calls.
- What can be improved
- An opening interruption led the agent into plan discussion before completing the recording notice and TPMO disclosure.
STT, LLM and TTS
- deepgram/nova-3
- zai-org/GLM-5.2
- Telnyx Ultra
Frequently asked questions
Is Gemini Live or Telnyx more reliable?
Telnyx is more reliable, by 37.80 points. Gemini Live passed 30.49% of the 82 scenarios on all 3 runs and Telnyx passed 68.29%. A scenario only counts when every run of it passed.
Which responds faster, Gemini Live or Telnyx?
Telnyx starts replying sooner, 1.23s faster. Mean response time is 3.05s for Gemini Live and 1.82s for Telnyx.
Which completes more calls, Gemini Live or Telnyx?
Gemini Live reached the expected outcome on 87.80% of calls and Telnyx on 97.56%. Telnyx is ahead on task completion.
How were Gemini Live and Telnyx tested?
Both ran the same Appointment and Medicare agents through the same 82 caller scenarios, 3 times each, with the same evaluators and mock tools. Only the platform and its speech and model components changed.