OpenAI TTS-1
Listed Proprietary · OpenAI
7.6
/100
OpenAI TTS-1 is a proprietary text-to-speech (TTS) API from OpenAI, measured by one independent benchmark, Artificial Analysis.
Artificial Analysis
Google Gemini 2.5 Flash Lite TTS Google · text-to-speech (TTS) API
ListedSpeech Arena Elo 1,082 on Artificial Analysis, latency not measured; ranked 57th of 112 in the TTS for Voice Agents 2026 index.
Benchmark summary: 7.8/100, ranked 57th of 112 in the TTS for Voice Agents 2026 index (Listed). Strongest criterion: price, 2.2 of 5 points.
Google Gemini 2.5 Flash Lite TTS is a proprietary text-to-speech (TTS) API from Google, measured by one independent benchmark, Artificial Analysis.
Overall score
7.8 /100
Score breakdown
- Real-time speed 0 /60
- Voice quality 5.6 /20
- Accuracy 0 /15
- Price 2.2 /5
Data checked on September 30, 2026
Updated after each benchmark capture
Every point comes from a public benchmark: sources · methodology
Google Gemini 2.5 Flash Lite TTS ranks 57th of 112 in the 2026 text-to-speech (TTS) API benchmark, with a score of 7.8/100.
Real-time latency
Neither Coval nor Speko measures Google Gemini 2.5 Flash Lite TTS's latency, so it scores 0 of 60 on real-time speed and does not appear in the real-time ranking.
Accuracy (word error rate)
No accuracy measurement: Coval does not measure its word error rate and Speko does not rate its pronunciation robustness, so accuracy counts 0 of 15.
Voice quality
In the Artificial Analysis Speech Arena (capture of October 1, 2026), Google Gemini 2.5 Flash Lite TTS has an Elo of 1,082 (±12, 95% confidence) from 3,103 blind comparisons, 41st highest of the 92 models Artificial Analysis rates.
Price
Artificial Analysis lists Google Gemini 2.5 Flash Lite TTS at $9.2 per 1M characters (9th lowest of the 78 models Artificial Analysis lists a price for).
Scoring note
Artificial Analysis changed its Speech Arena Elo between the captures of September 30, 2026 and October 1, 2026 without a new measurement date (1,081, then 1,082): the score uses the average, 1,081.5. The value shown is the latest.
Benchmark measurements
Artificial Analysis Speech Arena
- Speech Arena Elo (blind listener preference)
- 1,082
- Elo 95% interval (±)
- 12
- Arena rank
- 41
- Arena rank range
- 37-48
- Arena appearances
- 3,103
- Voices tested
- 5
- Price per 1M characters
- 9.2 USD
- Released
- Dec 2025
- Artificial Analysis model
- Gemini 2.5 Flash Lite TTS
- Artificial Analysis leaderboard
- artificialanalysis.ai
Not collected
- Speed (Coval time to first audio) — not measured by Coval (capture of 2026-10-01, 30-day window); counts 0
- Speed (Speko time to first audio) — not measured by Speko (capture of 2026-10-01); counts 0
- Quality (Speko naturalness) — not measured by Speko (capture of 2026-10-01); counts 0
- Accuracy (Coval word error rate) — not measured by Coval (capture of 2026-10-01, 30-day window); counts 0
- Accuracy (Speko robustness) — not measured by Speko (capture of 2026-10-01); counts 0
- Price (Speko cost per 1M characters) — not measured by Speko (capture of 2026-10-01); counts 0
Similar TTS models
OpenAI TTS-1 HD
Listed Proprietary · OpenAI
7.6
/100
OpenAI TTS-1 HD is a proprietary text-to-speech (TTS) API from OpenAI, measured by one independent benchmark, Artificial Analysis.
Artificial Analysis
async Pro v1.0
Listed Proprietary · Async
8.1
/100
async Pro v1.0 is a proprietary text-to-speech (TTS) API from Async, measured by one independent benchmark, Artificial Analysis.
Knowledge sharing Assistants Artificial Analysis