step-3.5-flash API status on NVIDIA NIM

Check provider

Available from NVIDIA NIM

★★★★★★★★★★ 3.5 Benchmark-backed score

StepFun Step 3.5 Flash is available free on NVIDIA NIM with up to 40 RPM and no daily token cap.

Check providerOpenAI compatibleReasoningTool callingTextReasoning

Check Provider Compare Save API Key

API Details

Copy-ready connection details

Use these values in your client or SDK.

Base URL

https://integrate.api.nvidia.com/v1

Model ID

stepfun-ai/step-3.5-flash

API format OpenAI Chat Completions

Technical Details

step-3.5-flash specifications

Provider catalog

Context window 262K

Max output 66K

Status Check provider

Knowledge cutoff 2025-01

Released Feb 2, 2026

Last updated Jul 26, 2026

Free listing since Feb 2, 2026

Input text, reasoning

Output text

Capabilities reasoning, tool calling

Open weights Yes

AI Recommendation

Should you use step-3.5-flash?

step-3.5-flash is listed for chat workloads and supports a 262K context window.

Check NVIDIA NIM's current endpoint status before integrating this listing. Use the alternatives table if the provider listing is unavailable.

Best for

Chat

Strengths & Weaknesses

Strengths

Long context window
Reasoning mode listed
Tool calling support
Works with OpenAI-style SDKs

Watch outs

Current endpoint availability needs provider confirmation
Free-tier rate limits apply
Vision support is not listed

Benchmark Overview

Benchmark signals for step-3.5-flash

Measured data

Intelligence General reasoning and instruction following

25.5/100

Speed Observed generation speed

290 tok/s

Context Maximum listed context window

262K

Pricing

step-3.5-flash pricing per 1M tokens

Check provider

Input $0.1 per 1M tokens

Output $0.3 per 1M tokens

Free access Check provider NVIDIA NIM

Rate limit Up to 40 RPM provider policy

Availability

step-3.5-flash availability by provider

Current provider only

We only found this step-3.5-flash listing on NVIDIA NIM in the current catalog. Use the related models section for nearby alternatives.

Provider	Model listing	Access	Context	API	Limits
NVIDIA NIM	stepfun-ai/step-3.5-flash	Check provider	262K	OpenAI-style	Up to 40 RPM

View NVIDIA NIM setup guide →

Compare

step-3.5-flash alternatives to consider

Open comparison

Model	Provider	Context	Access
01-ai/yi-large	NVIDIA NIM	131K	Free tier
adept/fuyu-8b	NVIDIA NIM	131K	Free tier
ai21labs/jamba-1.5-large-instruct	NVIDIA NIM	131K	Free tier
aisingapore/sea-lion-7b-instruct	NVIDIA NIM	131K	Free tier
baai/bge-m3	NVIDIA NIM	131K	Free tier

Typical Use Cases

step-3.5-flash use cases

Chat

step-3.5-flash is tagged for chat in this catalog and works with OpenAI-compatible client libraries.

FAQ

step-3.5-flash free API FAQ

Is step-3.5-flash free to use?

step-3.5-flash appears in the free model catalog for NVIDIA NIM, but its current endpoint availability should be confirmed with the provider before use.

What is the step-3.5-flash model ID?

The model ID shown in this catalog is stepfun-ai/step-3.5-flash.

What are the step-3.5-flash free tier rate limits on NVIDIA NIM?

The listed free tier limit is Up to 40 RPM. Limits can change per account tier, so confirm against the provider dashboard.

What context window does step-3.5-flash support?

The listed context window is 262K tokens with up to 66K output tokens.

More about step-3.5-flash

StepFun Step 3.5 Flash is available free on NVIDIA NIM with up to 40 RPM and no daily token cap. StepFun's latest flash-optimized model prioritizes speed and efficiency for high-throughput tasks while retaining strong general performance. OpenAI-compatible API. Requires free NVIDIA Developer Program membership and phone verification.

For API keys, setup steps, and provider-level limits, see the NVIDIA NIM provider page.