ElevenLabs is ahead on repeatable reliability, voice tone and clarity, interruption handling and response time, and Telnyx on task completion and tool call accuracy. The two tie on infrastructure reliability.
Last updated Methodology by Luis Ojeda
Pick ElevenLabs for reliability across repeated runs (1.22 points higher), how the agent sounds (0.26 higher), handling interruptions (0.33 higher) and fast replies (0.54s faster). Pick Telnyx for completing the caller's task (6.10 points higher) and accurate tool calls (0.28 higher). They are level on calls that connect and stay up.
Bars share one scale across all 8 platforms. The place next to each figure is its rank in the field.
Share of the 82 scenarios that passed on all three runs.
ElevenLabs, 1.22 points higher
Calls where the expected outcome was fully reached.
Telnyx, 6.10 points higher
Calls with no connection, audio or platform failure.
Level
Mean score for calling the right tool with the right arguments.
Telnyx, 0.28 higher
Mean score for how clear and natural the agent sounds.
ElevenLabs, 0.26 higher
Mean score for yielding and recovering when the caller cuts in.
ElevenLabs, 0.33 higher
Mean time for the agent to start replying after the caller stops.
ElevenLabs, 0.54s faster
246 calls per platform: 82 scenarios, 3 runs each.
ElevenLabs is more reliable, by 1.22 points. ElevenLabs passed 69.51% of the 82 scenarios on all 3 runs and Telnyx passed 68.29%. A scenario only counts when every run of it passed.
ElevenLabs starts replying sooner, 0.54s faster. Mean response time is 1.27s for ElevenLabs and 1.82s for Telnyx.
ElevenLabs reached the expected outcome on 91.46% of calls and Telnyx on 97.56%. Telnyx 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.
