Step 3.5 Flash: price, context, what it takes
Step 3.5 Flash from stepfun, as OpenRouter's public list names it: stepfun/step-3.5-flash. Read 2026-11-06.
Prices are OpenRouter's, in US dollars. For most models that is the vendor's own list price; a vendor selling direct can differ.
- Input, per 1M tokens$0.100
- Output, per 1M tokens$0.300
- Context window262,144 tokens
- Longest answer65,536 tokens
- Takestext
- Givestext
- Acceptsreasoning, tools
- Released2026-01-29
- In the list since2026-10-28
One price since 2026-10-28, read 1 times.
| Model | Input, 1M | Output, 1M | Context | Accepts |
|---|---|---|---|---|
| Step 3.7 Flash | $0.200 | $1.15 | 262K | reasoning · JSON schema · tools |
| Step 5 Preview | $1.00 | $2.70 | 1.05M | reasoning · JSON schema · tools |
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