The Orchestrator › Models › StepFun
StepFun: Step 3.5 Flash 2603
Step 3.5 Flash 2603 via TrustedRouter
Specifications
| Provider | StepFun |
| Model ID | stepfun/step-3.5-flash-2603 |
| Context window | 262K tokens (262,144) |
| Modalities | text → text |
| Tokenizer | unknown |
| Router sources | TrustedRouter |
| Released | — |
| Tracked since | 2026-11-14 |
| Popularity | Not in the ranked set |
| Reasoning | — |
Pricing (per million tokens)
| Variant | Source | API ID | Input | Output | Context |
|---|---|---|---|---|---|
| standard | TrustedRouter | stepfun/step-3.5-flash-2603 | $0.105 | $0.317 | 262K |
Recorded price history
| Date | Input / 1M | Output / 1M | Context |
|---|---|---|---|
| 2026-11-14 | $0.105 | $0.317 | 262K |
Capabilities
Agentic tool useStructured outputs256K+ context windowControllable reasoningNo content storage (attested)
Trust flags come from TrustedRouter's per-provider attestations.
Supported parameters
tools, max_tokens, reasoning, include_reasoning, structured_outputs, response_format