HASTATAgent stack guide Unknown
Step 3.5 Flash 2603
StepFun flash model for efficient multimodal reasoning, coding, and tool use
Fresh · fetched 2026-08-17T02:11:57.739Z · Models.dev(opens in a new tab)
Minimum context256K
Output256K
Providers5
CapabilitiesTool calling, Reasoning
Provider offers
| Providers | Input / 1M | Output / 1M | Cache read / 1M | Context / output | Updated |
|---|---|---|---|---|---|
 NanoGPTstepfun-ai/step-3.5-flash-2603 | $0.10 | $0.30 | $0.050 | 256K | 2026-04-02 |
 StepFun Step Plan (China)step-3.5-flash-2603 | Unavailable | Unavailable | Unavailable | 256K | 2026-04-02 |
 StepFun (Global)step-3.5-flash-2603 | $0.10 | $0.30 | $0.020 | 256K | 2026-04-02 |
 StepFun (China)step-3.5-flash-2603 | $0.10 | $0.30 | $0.020 | 256K | 2026-04-02 |
 StepFun Step Plan (Global)step-3.5-flash-2603 | Unavailable | Unavailable | Unavailable | 256K | 2026-04-02 |
Lowest reported provider price in USD per 1M tokens; unavailable is not free. Provider documentation remains authoritative. Catalogue presence is not an uptime, security, or quality endorsement.
Source metadata and limitations
Capabilities are source-reported. Tool calling does not prove quality in a particular harness. Prices and limits can change.
Modalities: text → text