Listener Elo 1,075 ±12 on Artificial Analysis (read October 22, 2026); latency not measured.
Benchmark summary: No speed tier: Coval, the source of the tiers, does not measure this model.
OpenAI GPT-Realtime-2 is a proprietary text-to-speech (TTS) API from OpenAI, measured by one independent benchmark, Artificial Analysis.
Speed tier
Not measured by Coval
No speed tier: Coval, the source of the tiers, does not measure this model.
Data read October 22, 2026. No combined score: methodology
Gradium TTS vs OpenAI GPT-Realtime-2 Fastest TTS APIs, by speed tierNeither Coval nor Speko measures OpenAI GPT-Realtime-2's latency, so it has no speed tier and does not appear in the speed tiers.
In the Artificial Analysis Speech Arena it holds 1,075 ±12 Elo (95% interval), 53rd highest of the 98 models Artificial Analysis rates; scores whose intervals overlap are a tie. In its Customer Service category, Artificial Analysis places it 48th, at 1,117 Elo.
Speko has not scored its pronunciation of numbers and dates.
Artificial Analysis lists $191.6. List prices, as each source prints them.
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