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Smallest AI vs Telnyx

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Telnyx is ahead on repeatable reliability, task completion, infrastructure reliability, tool call accuracy and response time, and Smallest AI on voice tone and clarity and interruption handling.

Smallest AI ranked 9 of 10 · Telnyx ranked 5 of 10

Last updated Methodology by Luis Ojeda

Which to pick

Pick Smallest AI for how the agent sounds (0.16 higher) and handling interruptions (0.28 higher). Pick Telnyx for reliability across repeated runs (12.19 points higher), completing the caller's task (3.25 points higher), calls that connect and stay up (3.66 points higher), accurate tool calls (0.13 higher) and fast replies (0.90s 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.

Smallest AI
56.10%9th
Telnyx
68.29%5th

Telnyx, 12.19 points higher

Task completion

Calls where the expected outcome was fully reached.

Smallest AI
94.31%5th
Telnyx
97.56%2nd

Telnyx, 3.25 points higher

Infrastructure-clean calls

Calls with no connection, audio or platform failure.

Smallest AI
96.34%7th
Telnyx
100.00%1st

Telnyx, 3.66 points higher

Tool call accuracy

Mean score for calling the right tool with the right arguments.

Smallest AI
4.58/56th
Telnyx
4.71/54th

Telnyx, 0.13 higher

Voice tone and clarity

Mean score for how clear and natural the agent sounds.

Smallest AI
4.37/52nd
Telnyx
4.21/56th

Smallest AI, 0.16 higher

Interruption handling

Mean score for yielding and recovering when the caller cuts in.

Smallest AI
4.91/58th
Telnyx
4.63/510th

Smallest AI, 0.28 higher

Mean response time

Mean time for the agent to start replying after the caller stops.

Smallest AI
2.71s8th
Telnyx
1.82s3rd

Telnyx, 0.90s faster

246 calls per platform: 82 scenarios, 3 runs each.

What each platform ran, and what we saw

Smallest AI

Strength
94.31% task completion across all 246 calls, and 62.71% pass³ on the Appointment suite (37 of 59 scenarios).
What can be improved
Atoms tool parameters cannot be arrays, so Medicare list arguments arrive as comma-separated text; its tool accuracy reads that text as a list. With the standard check it scores 45.12% pass³.
STT, LLM and TTS
  • pulse
  • electron
  • waves_lightning_v3_1_pro (chelsea)
Open example All Smallest AI calls

Telnyx

Strength
Tied for second 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
Open example All Telnyx calls

Related comparisons

Smallest AI vs Telnyx FAQ

  • Telnyx is more reliable, by 12.19 points. Smallest AI passed 56.10% of the 82 scenarios on all 3 runs and Telnyx passed 68.29%. A scenario only counts when every run of it passed.

  • Telnyx starts replying sooner, 0.90s faster. Mean response time is 2.71s for Smallest AI and 1.82s for Telnyx.

  • Smallest AI reached the expected outcome on 94.31% 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.

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