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
Gemini Live vs PolyAI
PolyAI is ahead of Gemini Live on repeatable reliability, task completion, infrastructure reliability, tool call accuracy, interruption handling and response time.
Gemini Live ranked 10 of 10 · PolyAI ranked 1 of 10
Last updated Methodology by Luis Ojeda
Which to pick
PolyAI is the better pick over Gemini Live on every measure that separates them: reliability across repeated runs (57.31 points higher), completing the caller's task (10.98 points higher), calls that connect and stay up (26.83 points higher), accurate tool calls (0.50 higher), handling interruptions (0.02 higher) and fast replies (0.58s faster).
Every metric, side by side
Bars share one scale across all 10 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%10th
- PolyAI
- 87.80%1st
PolyAI, 57.31 points higher
Task completion
Calls where the expected outcome was fully reached.
- Gemini Live
- 87.80%10th
- PolyAI
- 98.78%1st
PolyAI, 10.98 points higher
Infrastructure-clean calls
Calls with no connection, audio or platform failure.
- Gemini Live
- 72.36%10th
- PolyAI
- 99.19%3rd
PolyAI, 26.83 points higher
Tool call accuracy
Mean score for calling the right tool with the right arguments.
- Gemini Live
- 4.40/59th
- PolyAI
- 4.90/51st
PolyAI, 0.50 higher
Voice tone and clarity
Mean score for how clear and natural the agent sounds.
- Gemini Live
- Not scored
- PolyAI
- 3.97/58th
Not comparable
Interruption handling
Mean score for yielding and recovering when the caller cuts in.
- Gemini Live
- 4.97/54th
- PolyAI
- 4.99/52nd
PolyAI, 0.02 higher
Mean response time
Mean time for the agent to start replying after the caller stops.
- Gemini Live
- 3.05s9th
- PolyAI
- 2.46s6th
PolyAI, 0.58s faster
246 calls per platform: 82 scenarios, 3 runs each.
What each platform ran, and what we saw
PolyAI
- Strength
- Leads repeatable reliability at 87.80% pass³ and task completion at 98.78% across all 246 calls.
- What can be improved
- Mean response time is 2.46s and voice tone and clarity is 3.97/5. Repetition and call termination were not scored; tool accuracy covers 237 calls and response time covers 245.
STT, LLM and TTS
- Component versions not supplied with these results
Related comparisons
- Gemini Live vs Retell
- Gemini Live vs LiveKit
- Gemini Live vs ElevenLabs
- Gemini Live vs Telnyx
- Gemini Live vs GPT Realtime
- Gemini Live vs Pipecat
- Gemini Live vs Vapi
- Gemini Live vs Smallest AI
- PolyAI vs Retell
- PolyAI vs LiveKit
- PolyAI vs ElevenLabs
- PolyAI vs Telnyx
- PolyAI vs GPT Realtime
- PolyAI vs Pipecat
- PolyAI vs Vapi
- PolyAI vs Smallest AI
Gemini Live vs PolyAI FAQ
Is Gemini Live or PolyAI more reliable?
PolyAI is more reliable, by 57.31 points. Gemini Live passed 30.49% of the 82 scenarios on all 3 runs and PolyAI passed 87.80%. A scenario only counts when every run of it passed.
PolyAI is more reliable, by 57.31 points. Gemini Live passed 30.49% of the 82 scenarios on all 3 runs and PolyAI passed 87.80%. A scenario only counts when every run of it passed.
PolyAI starts replying sooner, 0.58s faster. Mean response time is 3.05s for Gemini Live and 2.46s for PolyAI.
Gemini Live reached the expected outcome on 87.80% of calls and PolyAI on 98.78%. PolyAI is ahead on task completion.
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.
Test your voice agent the same way.
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