OpenAI logo

GPT-4o mini Realtime


GPT-4o mini Realtime is OpenAI logoOpenAI's language model with a 128K context window and up to 4K output tokens, available from 2 providers, starting at $0.600 / 1M input and $2.40 / 1M output. Preview release of the GPT-4o mini Realtime model for low-latency audio and text interaction over WebRTC or WebSocket.
Spec
Canonical IDopenai-gpt-4o-mini-realtime-preview
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Providers
Context Window128K tokens
Max Output4K tokens
Input ModalitiesAudioText
Output ModalitiesAudioText
Release Date · 1 year ago
Knowledge Cutoff

Capabilities

Input2/5
Text
Image·
Audio
Video·
PDF·
Output2/5
Text
Image·
Audio
Video·
Embedding·
Capabilities2/13
Reasoning·
Adaptive Reasoning·
Function Calling
Parallel Function Calling
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Pricing by Provider

ProviderStandard
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Audio In
$ / 1M
Audio Out
$ / 1M
OpenAI logo
OpenAI
gpt-4o-mini-realtime-preview
$0.600$2.40$0.300$10.00$20.00
Azure AI Foundry logo
Azure AI Foundry
azure/us/gpt-4o-mini-realtime-preview-2024-12-17
$0.660$2.64$0.330$11.00$22.00

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-5 Mini Image400K$2.50$2.00Available
GPT-5 Mini400K$0.250$2.00Available
GPT-5 Mini MediumAvailable
GPT-5 Mini MinimalAvailable
GPT-4.1 Mini1.0M$0.400$1.60Deprecating
GPT-4o mini Transcribe16K$1.25$5.00Available
GPT-4o mini TTS$0.600$10.00Available
GPT-4o mini Search Preview128K$0.150$0.600Available
GPT-4o mini Realtime128K$0.600$2.40Current
GPT-4o mini Audio128K$0.150$0.600Available
GPT-4o mini131K$0.150$0.600Available

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
GPT-5 Image400K$10.00$10.00
GPT-5 Pro400K$15.00$120.00
GPT-5 Codex400K$1.25$10.00
GPT-5410K$1.25$10.00
GPT-5 Chat128K$1.25$10.00
GPT-5 NanoNano400K$0.050$0.400
GPT-5 ChatGPT
GPT-5 Low
GPT-5 Medium
GPT-5 Minimal

Model IDs