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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 $0.150 / 1M input and $0.600 / 1M output. A preview release of the GPT-4o Mini Realtime model, capable of responding to audio and text inputs in real time over WebRTC or WebSocket interfaces.
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

ProviderStandardBatch
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Audio In
$ / 1M
Audio Out
$ / 1M
Input
$ / 1M
Output
$ / 1M
Azure AI Foundry logo
Azure AI Foundry
eu/gpt-4o-mini-realtime-preview-2024-12-17
$0.150$0.600$0.075$11.00$22.00$0.075$0.300
OpenAI logo
OpenAI
gpt-4o-mini-realtime-preview
$0.600$2.40$0.300$10.00$20.00

Regional pricing

Provider-specific pricing that varies by region.
Azure AI Foundry logo
Azure AI Foundry
20 regions
RegionStandardBatch
Input
$ / 1M
Output
$ / 1M
Cache Read
$ / 1M
Audio In
$ / 1M
Audio Out
$ / 1M
Input
$ / 1M
Output
$ / 1M
Global
Global$0.150$0.600$0.075$11.00$22.00$0.075$0.300
Asia Pacific
Southeast Asia (Singapore)/ southeastasia$0.099$0.792$0.099$0.083
Europe
France Central (Paris)/ francecentral$0.165$0.660$0.083$0.083
Germany West Central (Frankfurt)/ germanywestcentral$0.165$0.660$0.083$0.083
Italy North (Milan)/ italynorth$0.165$0.660$0.083
Poland Central (Warsaw)/ polandcentral$0.165$0.660$0.083$0.083
Spain Central (Madrid)/ spaincentral$0.165$0.660$0.083$0.083
Sweden Central (Gävle)/ swedencentral$0.165$0.660$0.091$0.083
West Europe (Netherlands)/ westeurope$0.165$0.660$0.083$0.083
US
Central US (Iowa)/ centralus$0.165$0.660$0.083$0.083
East US (Virginia)/ eastus$0.165$0.660$0.083$0.083
East US 2 (Virginia)/ eastus2$0.165$0.660$0.083$0.083
North Central US (Illinois)/ northcentralus$0.165$0.660$0.083$0.083
South Central US (Texas)/ southcentralus$0.165$0.660$0.083$0.083
US Gov Arizona/ usgovarizona$0.207$0.825$0.104
US Gov Virginia/ usgovvirginia$0.207$0.825$0.104
West Central US (Wyoming)/ westcentralus$0.165$0.660$0.083
West US (California)/ westus$0.165$0.660$0.083$0.083
West US 2 (Washington)/ westus2$0.165$0.660$0.083$0.083
West US 3 (Phoenix)/ westus3$0.165$0.660$0.083$0.083

Cost Calculator

Preset:
Compares every provider & tier in USD

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-5.4 Mini1.1M$0.750$4.50Available
GPT-5 Image Mini400K$2.50$2.00Available
GPT-5 Mini400K$0.250$2.00Available
GPT-4.1 Mini1.0M$0.400$1.60Deprecating
GPT-4o mini Transcribe16K$0.150$0.600Available
GPT-4o mini TTS$0.150$0.600Available
GPT-4o Mini Search Preview128K$0.150$0.600Available
GPT-4o mini Realtime128K$0.150$0.600Current
GPT-4o mini Audio128K$0.150$0.600Available
GPT-4o Mini131K$0.150$0.600Available
GPT-4o Mini Audio128KAvailable

Other models

ModelTierReleasedContextInput / 1MOutput / 1M
GPT-5.4 NanoNano1.1M$0.200$1.25
GPT-5.41.1M$2.50$15.00
GPT-5.4 ProPro1.1M$30.00$180.00
GPT-5.4 3.51.1M
GPT-5.4 Pro 3.5Pro1.1M
GPT-5.3 Chat128K$1.75$14.00
GPT-5.3 Codex400K$1.75$14.00
GPT-5.3 Codex Spark128K
GPT-5.3 Instant128K
GPT-5.2 Codex400K$1.75$14.00

Model IDs