Cartesia

#4 in Voice & Text-to-SpeechPrice: ~$39/1M chars (May 2026 figure)

GetToolRank Score

80/100

Top blind-preference voice quality (Sonic 3.6) and built for low-latency streaming agents.

Score breakdown

Output quality & capability (30%)

9/10

Ease of use & time to first result (20%)

7/10

Value & pricing clarity (15%)

7/10

Momentum & reliability (15%)

9/10

Openness & integration (10%)

8/10

Trust, licensing & safety (10%)

7/10

Sonic 3.6 released Aug 27 2026; #1 of 92 on Artificial Analysis provider board, Sept 8 2026 (via Gradium)

Official site	https://www.cartesia.ai
Starting price	~$39/1M chars (May 2026 figure) (check the vendor's page; prices change often)
Affiliate program	nothing found; not confirmed absent · No affiliate program confirmed.
Verification	verified-web
Last reviewed	2026-10-16

gradium.ai https://gradium.ai/content/best-elevenlabs-alternatives-2026-tts-apis-voice-quality-price

Scores are editorial and come from desk research. See our methodology and disclosures.