StepFunActive
Step 3.5 Flash 2603
StepFun flash model for efficient multimodal reasoning, coding, and tool use
Context
262,144
Max output
256,000
Input / 1M
$0.10
Output / 1M
$0.30
Providers
6
01Profile
Profile
Released
2026-04-02
Last updated
2026-04-02
Knowledge cutoff
2025-01
Weights
Open
02Capabilities
Capabilities
Input
text
Output
text
Reasoning
Yes
Tool calling
Yes
Structured output
No
Attachments
No
Cache read
$0.02
Cache write
Not listed
03Pricing
Pricing across 4 providers
Per 1M tokens, USD. Sorted by input price. First-party row highlighted.
04History
Change history
12+ recent events since 2026-04-02
2026-09-03Contextnano-gptContext window—→ 262,144
2026-09-03Contextnano-gptMax output—→ 65,536
2026-08-03Contextnano-gptContext window256,000→ new
2026-08-03Contextnano-gptMax output256,000→ new
2026-07-10Addedempiriolabsoffering→ new
2026-07-09Removedrouting-runofferingremoved→ new
2026-06-15Contextstepfun-ai-step-planContext window256,000→ new
2026-06-15Contextstepfun-ai-step-planMax output256,000→ new
2026-06-15Contextstepfun-step-planContext window256,000→ new
2026-06-15Contextstepfun-step-planMax output256,000→ new
2026-06-03Addednano-gptoffering→ new
2026-06-03Price uprouting-runinput / 1M—→ $0.10