Claude Opus 5.5
Claude Opus 5.5 is the Claude option for complex agentic planning, long briefs, and multi-step creative work. Use it when you want deep reasoning at a lower planning cost than Fable 5.
Best for
- ambitious planning
- story structure
- long briefs
- creative direction
Use when
- You are planning a complex image, video, or campaign concept.
- The task benefits from careful structure and writing sensitivity.
- You want a Claude-style planning pass before generating assets.
Avoid when
- You need the fastest Agent response.
- You only need to run a known prompt in a known generation model.
Inputs
- Agent prompt
Outputs
- Agent response
- generation plans
DayGen surfaces
- /chat