ComfyUI Node
H3 Detail Schedule
Sigmas for MiniMax H3, with the refinement phase budgeted separately from the structure phase. H3's default shift of 12 leaves only one step below sigma 0.5, so fine detail is decided in a single jump; this gives that region its own steps while keeping the shift curve unchanged. Wire into SamplerCustomAdvanced.
H3 Detail Schedule
- SIGMAS
- report
◄structure_steps15►
◄detail_steps8►
◄split0.50►
◄shift12.00►
◄detail_spacing0.00►
CategoryNynxz/H3/Sampling
Inputs (5)
| Name | Type | Default | Description |
|---|---|---|---|
| structure_steps | INT | 151–1000 | Steps above the split — where global shape and motion are decided. H3 wants a long structure phase; this is what the default shift buys. |
| detail_steps | INT | 80–1000 | Steps below the split — refinement. Plain shift-12 gives you ONE of these at 20 steps, which is the whole reason this node exists. |
| split | FLOAT | 0.500.01–0.99 | The sigma where structure ends and refinement begins. Lower spends more of the budget on structure; 0.5 is where H3's own curve has spent 92% of its range. |
| shift | FLOAT | 12.000.01–100 | The flow shift, matching MiniMax H3 Sigma Shift. The CURVE is untouched by this node — every sigma it emits lies exactly on this curve, only sampled more densely at the bottom. Change it here and on the model. |
| detail_spacing | FLOAT | 0.000–1 | Evens out the refinement steps. At 0 the detail phase follows the curve, which makes its first step 3.7x shorter than the structure step before it — and res_multistep's second-order term, built from exactly that ratio, stops contributing for one step at the handoff. At 1 every refinement step is the same size in the sampler's own coordinate. The split and the final sigma do not move at any setting. Free; costs no steps. |
Outputs (2)
| Name | Type | Description |
|---|---|---|
| SIGMAS | SIGMAS | — |
| report | STRING | Where the steps landed, and the size of the final hop — the number that says whether detail gets resolved or invented. |