Choosing a model #
If you're not sure where to start, use GPT-5.6 Sol, our flagship model for complex reasoning and coding. Choose GPT-5.6 Terra to balance intelligence and cost, or GPT-5.6 Luna for cost-sensitive, high-volume workloads. All latest OpenAI models support text and image input, text output, multilingual capabilities, and vision. Models are available via the Responses API and our Client SDKs.
Flagship models #
Start with GPT-5.6 Sol for complex reasoning and coding, choose GPT-5.6 Terra to balance intelligence and cost, or use GPT-5.6 Luna for cost-sensitive, high-volume workloads.
Specialized models #
Purpose-built for specific tasks.
OpenAI Daybreak
Advanced cyber models for defenders
GPT-5.6 Cyber
Our most advanced cybersecurity model for authorized vulnerability research and security testing.
Daybreak Red
An alias for advanced cybersecurity models for authorized vulnerability research and security testing.
Daybreak Blue
An alias for flagship general-purpose models with safeguards for defensive cybersecurity work.
Image
Models for image generation and editing
Realtime
Models for realtime speech and translation
GPT-Realtime-2.1 Reasoning model with tool use
GPT-Realtime-2.1 Mini Reasoning model with tool use
GPT-Realtime-2 Reasoning model with tool use
GPT-Realtime-Translate Streaming speech-to-speech translation model
GPT-Realtime-1.5 The best voice model for audio in, audio out
GPT-Realtime Mini
Deprecated
A cost-efficient version of GPT-Realtime
Speech generation
Models for generating natural-sounding speech from text
Transcription
Models for transcribing speech into text
GPT-Transcribe
High-accuracy speech-to-text model for file and Realtime input transcription
GPT-Live-Transcribe
Low-latency speech-to-text model for realtime transcription
GPT-Realtime-Whisper
Streaming speech-to-text model for realtime transcription
GPT-4o Transcribe
Speech-to-text model powered by GPT-4o GPT-4o Mini Transcribe
Speech-to-text model powered by GPT-4o Mini
Browse our full catalog of models #
Diverse models for a variety of tasks