Open-weight GPT reasoning model for self-hosted agents and controllable deployments
Details
| Field | Value |
|---|---|
| id | gpt-oss-20b |
| family | gpt-oss |
| modality | text->text |
| context_length | 131072 |
| max_output_tokens | 32768 |
| release_date | 2025-08-05 |
| is_open_weights | yes |
| supports_tool_call | yes |
| supports_reasoning | yes |
| supports_structured_output | no |
| supports_attachment | no |
| input_modalities | text |
| output_modalities | text |