Models
11 · 2025–2026
GPT Realtime TranslateAudio16K
GPT Realtime WhisperAudio16K
GPT-4.1LLM · Multimodal · Tool-using model1M
GPT-5.4 ProLLM · Multimodal · Reasoning model +21.05M
GPT-5.4 Thinking1,050,000
ChatGPT Images 2.0Image generation · Reasoning model · Multimodal
GPT-5.5LLM · Multimodal · Reasoning model +11M
GPT-5.5 ProLLM · Multimodal · Reasoning model +11M
1Test Model Full FieldsLLM · Reasoning model · Multimodal256K
GPT-5.5 InstantLLM · Multimodal
GPT Realtime 2Audio · Multimodal · Reasoning model128K