01
Providers + pricing
| Capabilities | Provider details | ||||
|---|---|---|---|---|---|
| ● Your own key · billed by your provider · AnyRouter fee $0 | |||||
Nous Research nousresearch-byok | $0.10list | $0.30list | Unavailable | ||
StepFun stepfun-byok | $0.10list | $0.30list | Unavailable | ||
StepFun stepplan-byok | $0.10list | $0.30list | Unavailable | ||
CommandCode commandcode-byok | $0.10list | $0.30list | Unavailable | ||
| ● Free pool · donated keys · not available for this model — donate a key | |||||
02
Try it
POST /api/v1/chat/completions
import { createAnyRouter } from "@anyr/ai-sdk-provider"import { generateText } from "ai" const anyrouter = createAnyRouter() const { text } = await generateText({ model: anyrouter("stepfun-ai/step-3.5-flash"), prompt: "Say hi in 3 words.",})console.log(text)
Set
ANYROUTER_API_KEY · edits on the demo update this codeLive demo
03
Uptime + latency
—recent checks · all routes
No health checks recorded for this model yet.
24h
No traffic in the last 24h.
More performance detail
Step 3.5 Flash
- Nous Research
- StepFun
- StepFun
- CommandCode
Texttext → text256Ktoken context
Context
256KInput
$0.10Output
$0.30TTFT
100msUptime
—Routes
404
Your access
CreditsTín dụngCredits
Your own key · AnyRouter fee $0
Run Step 3.5 Flash on your own key — your requests are billed by the provider. Pool callers pay AnyRouter credits.
No BYOK keys configured for this model yet.
Share a key with the pool to earn credits for every request it serves, covering your plan cost.
Free poolnot in pool yetDonate key →
Create API key for this model05
About
Step 3.5 Flash is a sparse Mixture-of-Experts model by StepFun with 196.81B total parameters (196B backbone + 0.81B MTP head) and ~11B active per token. Built on a 45-layer transformer with 288 routed experts (Top-8 selection), 3:1 SWA attention ratio, and 256K context. Achieves 100–300 tok/s throughput (peaking at 350 tok/s for coding) for frontier reasoning and agentic tasks.
Released 2026-06-01
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