Models

Every model with a recorded change, from releases to retirements. 164 models from 10 companies.

All companies Anthropic DeepSeek Google Meta Microsoft Mistral AI Moonshot AI OpenAI SpaceXSI Z.ai

All families DALL-E GPT Image GPT Realtime GPT-4.x GPT-5.x GPT-6 GPT-Live OpenAI o-series Sora

Showing 82 models. Most popular is estimated US search interest over recent months, as of Oct 24, 2026. Searches for a family name count toward its current versions, and an older version ranks below the one that replaced it.

GPT-6 Astra
Model at OpenAI · GPT-6 family
New release: Perplexity Agent API lists GPT-6 Astra at $10 per million input tokens · 3d
GPT-6.1 Sol
Model at OpenAI · GPT-6 family
Benchmark: Vals Index: Sonnet 5.5 edges Opus 5.5 and Gemini 4 Argon · 1w
GPT-6 Luna
Model at OpenAI · GPT-6 family
Default change: GPT-6 Luna in ChatGPT updated on October 28 with more concise replies · 4d
GPT-6 Sol
Model at OpenAI · GPT-6 family
Default change: GPT-6 becomes the ChatGPT model on free and paid plans · 3w
GPT Image 2.5 Sunburst
Model at OpenAI · GPT Image family
New release: GPT Image 2.5 Sunburst and Flare released · Sep 8, 2026
GPT Image 2
Model at OpenAI · GPT Image family
GPT-5.6 Terra
Model at OpenAI · GPT-5.x family
Price change: GPT-5.6 Luna 80% cheaper, Terra 20% cheaper · Jul 30, 2026
GPT Image 2.5 Flare
Model at OpenAI · GPT Image family
New release: GPT Image 2.5 Sunburst and Flare released · Sep 8, 2026
GPT-5.6 Sol
Model at OpenAI · GPT-5.x family
Price change: GPT-5.6 Sol price cut to $4 input and $20 output · Aug 21, 2026
GPT-5.3-Codex-Spark
Model at OpenAI · GPT-5.x family
Retired: GPT-5.3-Codex-Spark research preview retired · Sep 14, 2026
WhisperRetiring Feb 26, 2027
Model at OpenAI
Retiring: Whisper and GPT-4o transcription models to shut down February 26, 2027 · Aug 26, 2026
GPT-5.6 Luna
Model at OpenAI · GPT-5.x family
Default change: ChatGPT replaces GPT-5.5 Instant with GPT-5.6 Sol and Luna · Aug 6, 2026
GPT-Rosalind
Model at OpenAI
Now available: Rosalind Academic Plan gives eligible labs sponsored GPT-Rosalind access · 2w
GPT Transcribe
Model at OpenAI
New release: GPT Transcribe and GPT Live Transcribe released · Jul 28, 2026
GPT-5.4 mini
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
gpt-5-6-cyber
Model at OpenAI · GPT-5.x family
Now available: Daybreak cybersecurity models available on Amazon Bedrock · Aug 11, 2026
GPT-Realtime-2.1
Model at OpenAI · GPT Realtime family
New release: GPT-Realtime-2.1 and GPT-Realtime-2.1 mini released · Jul 6, 2026
GPT Live Transcribe
Model at OpenAI · GPT-Live family
New release: GPT Transcribe and GPT Live Transcribe released · Jul 28, 2026
GPT-5.3-CodexRetiring Apr 1, 2027
Model at OpenAI · GPT-5.x family
Retiring: GPT-5.3-Codex, GPT-5.1 and GPT-5.4 nano to shut down April 1, 2027 · Oct 1, 2026
GPT-4o miniRetiring Jan 14, 2027
Model at OpenAI · GPT-4.x family
Retiring: GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini to shut down January 14, 2027 · 2w
GPT-5.5 Pro
Model at OpenAI · GPT-5.x family
New release: GPT-5.5 and GPT-5.5 Pro released in the API · Apr 24, 2026
o3
Model at OpenAI · OpenAI o-series family
Retiring: GPT-5 and o3 snapshots to shut down December 11 · Jun 11, 2026
GPT-5.4 nanoRetiring Apr 1, 2027
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
GPT-Realtime-2.1 mini
Model at OpenAI · GPT Realtime family
New release: GPT-Realtime-2.1 and GPT-Realtime-2.1 mini released · Jul 6, 2026
GPT-5 nano
Model at OpenAI · GPT-5.x family
Retiring: GPT-5 and o3 snapshots to shut down December 11 · Jun 11, 2026
gpt-realtimeRetiring Jan 20, 2027
Model at OpenAI · GPT Realtime family
Retiring: Legacy audio and realtime models to shut down January 20, 2027 · Jul 20, 2026
GPT-4o mini TTSRetiring Jan 6, 2027
Model at OpenAI · GPT-4.x family
Retiring: Text-to-speech models to shut down January 6, 2027 · Oct 1, 2026
o4-mini
Model at OpenAI · OpenAI o-series family
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
o1
Model at OpenAI · OpenAI o-series family
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
GPT-4 Turbo
Model at OpenAI · GPT-4.x family
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
GPT-5.5
Model at OpenAI · GPT-5.x family
Retired: GPT-5.5 retired from Codex and ChatGPT · 2w
GPT-5.1-Codex-Max
Model at OpenAI · GPT-5.x family
Retiring: Codex drops GPT-5.2-Codex, GPT-5.1-Codex models and GPT-5 for ChatGPT sign-in · Apr 7, 2026
GPT-5.4
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
GPT-4o mini TranscribeRetiring Feb 26, 2027
Model at OpenAI · GPT-4.x family
Retiring: Whisper and GPT-4o transcription models to shut down February 26, 2027 · Aug 26, 2026
GPT Image 1.5Retiring Dec 1, 2026
Model at OpenAI · GPT Image family
Retiring: Older GPT Image models to shut down December 1 · Jun 2, 2026
GPT Image 1
Model at OpenAI · GPT Image family
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
GPT Image 1 miniRetiring Dec 1, 2026
Model at OpenAI · GPT Image family
Retiring: Older GPT Image models to shut down December 1 · Jun 2, 2026
gpt-audioRetiring Jan 20, 2027
Model at OpenAI
Retiring: Legacy audio and realtime models to shut down January 20, 2027 · Jul 20, 2026
TTS-1Retiring Jan 6, 2027
Model at OpenAI
Retiring: Text-to-speech models to shut down January 6, 2027 · Oct 1, 2026
GPT-5.2
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
o3-pro
Model at OpenAI · OpenAI o-series family
Retiring: GPT-5 and o3 snapshots to shut down December 11 · Jun 11, 2026
chat-latest
Model at OpenAI
Default change: chat-latest now tracks the ChatGPT model for Plus, Pro, Business and Enterprise · 3w
GPT-5.1Retiring Apr 1, 2027
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
GPT-5
Model at OpenAI · GPT-5.x family
Perplexity AI: Perplexity retires older OpenAI model IDs from the Agent API and Orchestrator API · 1w
GPT-4.1Retiring Jan 14, 2027
Model at OpenAI · GPT-4.x family
Retiring: GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini to shut down January 14, 2027 · 2w
GPT-4oRetiring Jan 14, 2027
Model at OpenAI · GPT-4.x family
Retiring: GPT-4o, GPT-4o mini, GPT-4.1 and GPT-4.1 mini to shut down January 14, 2027 · 2w
GPT-3.5 Turbo
Model at OpenAI
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
GPT-4
Model at OpenAI · GPT-4.x family
Retired: Legacy GPT, o-series and GPT Image 1 snapshots shut down on October 23 · 1w
GPT-4o TranscribeRetiring Feb 26, 2027
Model at OpenAI · GPT-4.x family
Retiring: Whisper and GPT-4o transcription models to shut down February 26, 2027 · Aug 26, 2026
TTS-1 HDRetiring Jan 6, 2027
Model at OpenAI
Retiring: Text-to-speech models to shut down January 6, 2027 · Oct 1, 2026