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OpenAIVoiceHolo rare

GPT-Realtime-2.1

Realtime speech-to-speech model with configurable reasoning, tool use, and robust voice-agent behavior

gpt-realtime-2.1
Type
Voice
Quality
Not rated yet
Context window
128,000 tokens
Max output
32,000 tokens
Input price
$4.00 / 1M tokens
Output price
$24.00 / 1M tokens
Cache read
$0.40 / 1M tokens
Cache write
—
Released
Jul 6, 2026
Knowledge cutoff
Sep 2024
Takes in
Text, Image, Audio
Puts out
Text, Audio
Reasoning
Yes
Tool calling
Yes
Structured output
No
File attachments
Yes
Access
Paid
License
Proprietary
Rarity
Holo rare
Set number
941/1044
Open OpenAI docsWhere to run it 2Meet its creatureBattle Qwen3-LiveTranslate Flash Realtime

Weights aren’t public. Use is governed by OpenAI’s terms. Specs from models.dev, last changed Oct 19, 2026. Official source: platform.openai.com.

How good is it?

Public leaderboard scores for GPT-Realtime-2.1, refreshed daily from Epoch AI and LMArena.

No public leaderboard lists GPT-Realtime-2.1 yet. Epoch AI and LMArena cover most chat, image, and video models from the big labs; embeddings, speech, and small open models mostly go unrated.

Where to run it

2 providers sell GPT-Realtime-2.1 through an API. Prices are per million tokens, cheapest first.

API providers

ProviderInputOutputContext
OpenAIOfficialCheapest paidgpt-realtime-2.1$4.00$24.00128K
Vercel AI Gatewayopenai/gpt-realtime-2.1$4.00$24.00128K

From models.dev and Hugging Face, checked daily. Resellers’ listings can lag behind their price pages, so confirm with the provider before you commit.

Face off

Current voice models from other labs at a similar output price.

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