OpenAI
GPT Realtime 1.5
Speech generation model for controllable voice, narration, and audio delivery
Model facts
- Context window
- 32K tokens
- Maximum output
- 4K tokens
- Cheapest paid input
- $4 per 1M tokens
- Cheapest paid output
- $16 per 1M tokens
- Open weights
- no
- Providers
- 2
Capabilities and modalities
tool calling, attachments, temperature control, text, image, audio.
Observed price history
- 2026-08-24: $4 input / $16 output per 1M tokens
API providers
- FastRouter — model id openai/gpt-realtime-1.5; $4 input / $16 output per 1M tokens; provider documentation
- Vercel AI Gateway — model id openai/gpt-realtime-1.5; $4 input / $16 output per 1M tokens; provider documentation