OpenAI's current speech-to-speech realtime model. Served via the gateway's /v1/realtime WebSocket endpoint with text and audio input/output and function calling.
LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.
OpenAI's current speech-to-speech realtime model. Served via the gateway's /v1/realtime WebSocket endpoint with text and audio input/output and function calling. You can access it through LLM Gateway's OpenAI-compatible API with automatic provider routing, fallback, and cost analytics.
Pricing for GPT Realtime 2.1 on LLM Gateway starts at $4.00 per million input tokens and $24.00 per million output tokens, depending on the provider. The pricing table above always reflects the current per-provider rates.
GPT Realtime 2.1 supports a context window of up to 128,000 tokens on its largest provider deployment.
GPT Realtime 2.1 is served by OpenAI through LLM Gateway. Requests are automatically routed to the best available provider, with fallback when a provider has issues.
GPT Realtime 2.1 supports tool (function) calling, but not structured JSON output mode.
GPT Realtime 2.1 was released on July 6, 2026.
GPT-5.6 Sol
1,050,000 context$5.00 in / $30.00 out per 1M
GPT-5.6 Terra
1,050,000 context$2.00 in / $12.00 out per 1M
GPT-5.6 Luna
1,050,000 context$0.20 in / $1.20 out per 1M
GPT Realtime 2.1 Mini
128,000 context$0.60 in / $2.40 out per 1M
GPT-5.5
1,050,000 context$5.00 in / $30.00 out per 1M
GPT-5.5 Pro
1,050,000 context$30.00 in / $180.00 out per 1M