Top Claude Opus tier for the hardest reasoning, coding, and long-horizon agents
Details
| Field | Value |
|---|---|
| id | claude-opus-4-8 |
| family | claude-opus |
| modality | text+image+pdf->text |
| context_length | 1000000 |
| max_output_tokens | 128000 |
| quantization | unknown |
| knowledge_cutoff | 2026-01 |
| release_date | 2026-05-28 |
| is_open_weights | no |
| supports_tool_call | yes |
| supports_reasoning | yes |
| supports_structured_output | yes |
| supports_attachment | yes |
| input_modalities | text, image, pdf |
| output_modalities | text |