United States

OpenAI

Frontier chat models, plus a decisions line that returns probabilities.

HQ: San Francisco
Founded: 2015
Weights: mixed
Models listed: 75

Active this monthShips decision modelsMany model typesReasoning modelsWebsite

Release timeline

Latest 40. Size is context length.

128KOpenAI: GPT AudioJan 19 400KOpenAI: GPT-5.3-CodexFeb 24 1.1MOpenAI: GPT-5.4Mar 5 1.1MOpenAI: GPT-5.4 ProMar 5 400KOpenAI: GPT-5.4 MiniMar 17 400KOpenAI: GPT-5.4 NanoMar 17 272KOpenAI: GPT-5.4 Image 2Apr 21 1.1MOpenAI: GPT-5.5Apr 24 1.1MOpenAI: GPT-5.5 ProApr 24 128KOpenAI: GPT-4o TranscribeApr 27 —OpenAI: Whisper 1Apr 27 —OpenAI: Whisper Large V3May 1 —OpenAI: Whisper Large V3 TurboMay 1 128KOpenAI: GPT-4o Mini TranscribeMay 1 400KOpenAI: GPT Chat LatestMay 5 400KOpenAI: GPT Image 1Jun 24 400KOpenAI: GPT Image 1 MiniJun 24 400KOpenAI: GPT Image 2Jun 24 1.1MOpenAI: GPT-5.6 SolJul 9 1.1MOpenAI: GPT-5.6 Sol ProJul 9 1.1MOpenAI: GPT-5.6 TerraJul 9 1.1MOpenAI: GPT-5.6 Terra ProJul 9 1.1MOpenAI: GPT-5.6 LunaJul 9 1.1MOpenAI: GPT-5.6 Luna ProJul 9 —OpenAI: GPT TranscribeAug 5 1.1MOpenAI: GPT-6 Astra ProSep 4 1.1MOpenAI: GPT-6 AstraSep 4 400KOpenAI: GPT Image 2.5 FlareSep 9 400KOpenAI: GPT Image 2.5 SunburstSep 9 1.1MOpenAI: GPT-6 SolSep 22 1.1MOpenAI: GPT-6 Sol ProSep 22 1.1MOpenAI: GPT-6 LunaSep 22 1.1MOpenAI: GPT-6 Luna ProSep 22 1.1MOpenAI: GPT-6.1 SolSep 29 1.1MOpenAI: GPT-6.1 Sol ProSep 29 1.1MOpenAI: GPT-6 Luna DecisionsOct 6 1.1MOpenAI: GPT-6.1 TerraOct 26 1.1MOpenAI: GPT-6.1 Terra ProOct 26 400KOpenAI: GPT Image 2.6 FlareNov 4 400KOpenAI: GPT Image 2.6 SunburstNov 4

Models

OpenAI

new

OpenAI: GPT Image 2.6 Sunburst

image

Makes or edits images.

Input: $8 / M
Context: 400K

OpenAI

new

OpenAI: GPT Image 2.6 Flare

image

Makes or edits images.

Input: $8 / M
Context: 400K

OpenAI

OpenAI: GPT-6.1 Terra Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $1 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6.1 Terra

reasoning

A chat model that spends extra steps before it answers.

Input: $1 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Luna Decisions

decision

Returns probabilities for your questions, not a paragraph.

Input: $0.100 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6.1 Sol Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6.1 Sol

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Luna Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $0.100 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Luna

reasoning

A chat model that spends extra steps before it answers.

Input: $0.100 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Sol Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Sol

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT Image 2.5 Sunburst

image

Makes or edits images.

Input: $8 / M
Context: 400K

OpenAI

OpenAI: GPT Image 2.5 Flare

image

Makes or edits images.

Input: $8 / M
Context: 400K

OpenAI

OpenAI: GPT-6 Astra

reasoning

A chat model that spends extra steps before it answers.

Input: $10 / M
Context: 1.1M

OpenAI

OpenAI: GPT-6 Astra Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $10 / M
Context: 1.1M

OpenAI

OpenAI: GPT Transcribe

transcription

Turns audio into text.

Input: $75 / M
Context: —

OpenAI

OpenAI: GPT-5.6 Luna Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $0.200 / M
Context: 1.1M

OpenAI

OpenAI: GPT-5.6 Luna

reasoning

A chat model that spends extra steps before it answers.

Input: $0.200 / M
Context: 1.1M

OpenAI

OpenAI: GPT-5.6 Terra Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT-5.6 Terra

reasoning

A chat model that spends extra steps before it answers.

Input: $2 / M
Context: 1.1M

OpenAI

OpenAI: GPT-5.6 Sol Pro

reasoning

A chat model that spends extra steps before it answers.

Input: $4 / M
Context: 1.1M

OpenAI

OpenAI: GPT-5.6 Sol

reasoning

A chat model that spends extra steps before it answers.

Input: $4 / M
Context: 1.1M

OpenAI

OpenAI: GPT Image 2

image

Makes or edits images.

Input: $8 / M
Context: 400K

OpenAI

OpenAI: GPT Image 1

image

Makes or edits images.

Input: $10 / M
Context: 400K