|         OpenAI GPT          |       ✅       |       ✅       |       ✅        |         ✅         |      ❌      |
|        OpenAI GPT-2         |       ✅       |       ✅       |       ✅        |         ✅         |      ✅      |
|           Pegasus           |       ✅       |       ✅       |       ✅        |         ✅         |      ✅      |
|          Perceiver          |       ✅       |       ❌       |       ✅        |         ❌         |      ❌      |
|         ProphetNet          |       ✅       |       ❌       |       ✅        |         ❌         |      ❌      |
|           QDQBert           |       ❌       |       ❌       |       ✅        |         ❌         |      ❌      |
|             RAG             |       ✅       |       ❌       |       ✅        |         ✅         |      ❌      |
