Compare Avg Price, Text to Speech, license, and release date. Search any text-to-speech model with the pickers below.
GPT-Realtime-2
OpenAI
N/A
TTS-1
OpenAI
$0.00
TTS-1 currently shows the lower Avg Price: $0.001 vs N/A for GPT-Realtime-2. That is the public OpenAI text-to-speech API pricing versus OpenAI text-to-speech API pricing. Duration, resolution, and voice settings can still flip the invoice.
TTS-1 currently leads on Text to Speech: N/A for GPT-Realtime-2 vs 1.2K for TTS-1. Rank and price move independently, so the cheaper text-to-speech model is not automatically the weaker one.
GPT-Realtime-2 is proprietary (Proprietary). TTS-1 is proprietary (Proprietary). Open-weight models can be self-hosted; proprietary ones are billed only through the provider API on this page.
Use the model pickers at the top of this page. Search any text-to-speech model in the index and the URL updates to a new comparison, the same way LLM comparison pages work. Open either model from the sidebar for the single-model Avg Price page.
This comparison uses public llm-stats and ZeroEval arena data for text-to-speech models, then normalizes Avg Price, Text to Speech, license, and release date inside AnotherWrapper. Treat the numbers as comparable public list rates, not a quote from either vendor.
Next step
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