Models3in catalog
Largest context262KStep 3.5 Flash
Avg context
258K
Cheapest input
—
Largest output
256K
Step 3.5 Flash (free)
Speed tiers
fast 3
Capabilities
What Stepfun models support across the catalog.
Vision
1 / 3
33% of models
Tool use
3 / 3
100% of models
Function calling
3 / 3
100% of models
Extended thinking
3 / 3
100% of models
Streaming
3 / 3
100% of models
Prompt caching
1 / 3
33% of models
All Stepfun models
Sorted by context window, largest first. Tap a row for full specs.
| Model | Context | Max output | Input $/M | Speed |
|---|---|---|---|---|
| Step 3.5 Flash | 262K | 66K | — | fast |
| Step 3.5 Flash (free) | 256K | 256K | — | fast |
| Step 3.7 Flash | 256K | 256K | — | fast |
See rankings
How Stepfun models rank against the full catalog.