GPT models and ChatGPT by OpenAI
| Model | API ID | Release | Cutoff | Conf. | Status | Notes |
|---|---|---|---|---|---|---|
| GPT-5.6 Sol | gpt-5.6-sol |
2026-07 | 2026-02 | medium | active | Flagship of GPT-5.6 family — a new class of intelligence for coding and professional work. 1M context, 128k output. $5/$30 per MTok. |
| GPT-5.6 Terra | gpt-5.6-terra |
2026-07 | 2026-02 | medium | active | GPT-5.6 variant that balances intelligence and cost. 1M context, 128k output. $2.50/$15 per MTok. |
| GPT-5.6 Luna | gpt-5.6-luna |
2026-07 | 2026-02 | medium | active | GPT-5.6 model optimized for cost-sensitive workloads. 1M context, 128k output. $1/$6 per MTok. |
| GPT-5.5 | gpt-5.5 |
2026-04 | 2025-12 | high | active | Flagship for complex reasoning and coding. Cutoff: Dec 1, 2025. 1M context, 128k output. $5/$30 per MTok. |
| GPT-5.4 | gpt-5.4 |
2026-02 | 2025-08 | high | active | Affordable model for coding/professional work. Cutoff: Aug 31, 2025. 1M context, 128k output. $2.50/$15 per MTok. |
| GPT-5.4 mini | gpt-5.4-mini |
2026-02 | 2025-08 | high | active | Strongest mini model. Cutoff: Aug 31, 2025. 400k context, 128k output. $0.75/$4.50 per MTok. |
| GPT-5.4 nano | gpt-5.4-nano |
2026-02 | 2025-08 | medium | active | Smallest GPT-5.4 variant for lower-latency, lower-cost workloads. Cutoff: Aug 31, 2025. |
| GPT Image 2 | gpt-image-2 |
2026-03 | n/a | low | active | State-of-the-art image generation model. |
| GPT-Realtime-2 | gpt-realtime-2 |
2026-03 | n/a | medium | active | Reasoning model for realtime voice interactions. Verified on OpenAI docs July 2026. |
| GPT-Realtime-2.1 | gpt-realtime-2.1 |
2026-07 | n/a | medium | active | Next-generation realtime voice interaction model. Verified on OpenAI docs July 2026. |
| GPT-Realtime-2.1 Mini | gpt-realtime-2.1-mini |
2026-07 | n/a | medium | active | Mini variant of GPT-Realtime-2.1. Verified on OpenAI docs July 2026. |
| GPT-Realtime-1.5 | gpt-realtime-1.5 |
2026-03 | n/a | medium | active | The best voice model for audio in, audio out. Verified on OpenAI docs July 2026. |
| GPT-Realtime Mini | gpt-realtime-mini |
2026-03 | n/a | medium | active | A cost-efficient version of GPT-Realtime. Verified on OpenAI docs July 2026. |
| GPT-Realtime-Translate | gpt-realtime-translate |
2026-03 | n/a | medium | active | Streaming speech-to-speech translation model. Verified on OpenAI docs July 2026. |
| GPT-Realtime-Whisper | gpt-realtime-whisper |
2026-03 | n/a | medium | active | Streaming speech-to-text model for realtime transcription. Verified on OpenAI docs July 2026. |
| GPT-4o | gpt-4o |
2024-05 | 2023-10 | high | active | Legacy. Still available. Multiple snapshots. |
| GPT-4o mini | gpt-4o-mini |
2024-07 | 2023-10 | high | active | Legacy small model. |
| o3 | o3 |
2025-04 | 2024-06 | medium | active | Legacy reasoning model. |
| o3 mini | o3-mini |
2025-01 | 2024-06 | medium | active | Legacy reasoning model. |
| o1 | o1 |
2024-09 | 2023-10 | high | active | Legacy reasoning model. |
| GPT-4o mini TTS | gpt-4o-mini-tts |
2025-03 | n/a | low | deprecated | Deprecated text-to-speech model. |
| GPT-4o Transcribe | gpt-4o-transcribe |
2025-03 | n/a | low | active | Speech-to-text. |
| GPT-4o mini Transcribe | gpt-4o-mini-transcribe |
2025-03 | n/a | low | active | Speech-to-text. |
Knowledge Cutoffs