Brandwave

AI voice agents:Which brands are most popular in search?

In August 2026, Retell AI was the most searched among AI voice agents worldwide, with an estimated 74K branded searches and 65.1% estimated Share of Search within this set. These are worldwide searches for English-language branded terms.

Share of Search, August 2026
  1. Retell AI65.1%
  2. Vapi19.5%
  3. Bland AI10.6%
  4. Synthflow4.7%

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Share of SearchLeaderboard

Compare the platforms used to build AI voice agents. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.

Share of Search among AI voice agents worldwide, by month

Share of Search by month for Retell AI, Vapi, Bland AI, Synthflow. The figures are in the table below the chart.

View monthly share of search table
MonthRetell AIVapiBland AISynthflow
Oct 202554.1%24.2%10.8%10.8%
Nov 202555.2%24.7%11%9%
Dec 202560.1%22%9.8%8%
Jan 202658.8%21.5%11.8%7.9%
Feb 202658.1%21.3%14.2%6.4%
Mar 202654.8%24.5%13.4%7.3%
Apr 202656.9%25.5%11.4%6.2%
May 202653.9%29.5%10.8%5.9%
Jun 202655.5%24.9%13.6%6.1%
Jul 202655.5%24.9%13.6%6.1%
Aug 202665.1%19.5%10.6%4.7%
Sep 2026————

This month’s ranking, August 2026

  1. 1.Retell AI

    65.1%

    Held 1st. 74K estimated branded searches, +22.3% vs prior month. Share +9.6 points.

  2. 2.Vapi

    19.5%

    Held 2nd. 22.2K estimated branded searches, -18.1% vs prior month. Share -5.3 points.

  3. 3.Bland AI

    10.6%

    Held 3rd. 12.1K estimated branded searches, -18.2% vs prior month. Share -2.9 points.

  4. 4.Synthflow

    4.7%

    Held 4th. 5.4K estimated branded searches, -18.2% vs prior month. Share -1.3 points.

Compare search popularity between leading brands

Which brand is most popular in search among AI voice agents worldwide?

In August 2026, Retell AI was the most searched among AI voice agents worldwide, with an estimated 74K branded searches and 65.1% estimated Share of Search within this set. Vapi is in 2nd place, 45.6 percentage points behind at 19.5% Share of Search.

Global AI voice agents, last 12 months ending September 2026
BrandShare of SearchPeakLowRank
Retell AI54.1% → 65.1%65.1%Aug 202653.9%May 20261st
Vapi24.2% → 19.5%29.5%May 202619.5%Aug 20262nd
Bland AI10.8% → 10.6%14.2%Feb 20269.8%Dec 20253rd
Synthflow10.8% → 4.7%10.8%Oct 20254.7%Aug 20264th

Each finding as a sentence

  • Across the 11 months ending August 2026, Retell AI’s estimated Share of Search among AI voice agents worldwide increased from 54.1% to 65.1%.
  • Across the 11 months ending August 2026, Vapi’s estimated Share of Search among AI voice agents worldwide decreased from 24.2% to 19.5%.
  • Across the 11 months ending August 2026, Synthflow’s estimated Share of Search among AI voice agents worldwide decreased from 10.8% to 4.7%.
  • Across the 11 months ending August 2026, Retell AI’s estimated Share of Search among AI voice agents worldwide peaked at 65.1% in August 2026 and was lowest at 53.9% in May 2026.
  • Across the 11 months ending August 2026, Vapi’s estimated Share of Search among AI voice agents worldwide peaked at 29.5% in May 2026 and was lowest at 19.5% in August 2026.
  • Across the 11 months ending August 2026, Bland AI’s estimated Share of Search among AI voice agents worldwide peaked at 14.2% in February 2026 and was lowest at 9.8% in December 2025.
  • Across the 11 months ending August 2026, Bland AI held steady: its estimated Share of Search among AI voice agents worldwide moved less than 0.5 percentage points.

How did search popularity change for AI voice agents worldwide in August 2026?

  1. In August 2026, Retell AI gained estimated Share of Search among AI voice agents worldwide, from 55.5% to 65.1%.

  2. In August 2026, Vapi lost estimated Share of Search among AI voice agents worldwide, from 24.9% to 19.5%.

  3. In August 2026, Bland AI lost estimated Share of Search among AI voice agents worldwide, from 13.6% to 10.6%.

  4. In August 2026, Synthflow lost estimated Share of Search among AI voice agents worldwide, from 6.1% to 4.7%.

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