DeepSeek-V4.1-Flash Free API on ModelScope

Free API Verified

Available from ModelScope

★★★★★★★★★★ 3.5 Benchmark-backed score

DeepSeek V4.1 Flash model for reasoning and agentic coding

Free APIOpenAI compatibleReasoningTool callingJSON mode

Try in Playground Compare Save API Key

API Details

Copy-ready connection details

Use these values in your client or SDK.

Base URL

https://api-inference.modelscope.cn/v1

Model ID

deepseek-ai/DeepSeek-V4.1-Flash

API format OpenAI Chat Completions + OpenAI Responses

Technical Details

DeepSeek-V4.1-Flash specifications

Provider and model catalog

Context window 8K

Max output 4K

Status Online

Family deepseek-flash

Knowledge cutoff 2025-05

Released Sep 10, 2026

Last updated Sep 10, 2026

Free listing since Sep 10, 2026

Input text, image

Output text

Capabilities reasoning, tool calling, structured output, file attachments, temperature control

Open weights Yes

Weights Hugging Face

External benchmark references

Benchmark	Score	Metric	Date
GPQA Diamond	90.9	pass@1	Not listed
MathArena Apex	65.6	pass@1	Not listed
Humanity's Last Exam	36.8	pass@1	Not listed
Humanity's Last Exam	39.1	pass@1	Not listed

AI Recommendation

Should you use DeepSeek-V4.1-Flash?

DeepSeek-V4.1-Flash is listed for chat workloads and supports a 8K context window.

Use it when ModelScope's free tier is enough for evaluation, demos, or light production traffic.

Best for

Chat

Strengths & Weaknesses

Strengths

Reasoning mode listed
Tool calling support
Structured JSON output
Open weights available

Watch outs

Vision support is not listed

Benchmark Overview

Benchmark signals for DeepSeek-V4.1-Flash

Measured data

Intelligence General reasoning and instruction following

39.5/100

Speed Observed generation speed

179 tok/s

Context Maximum listed context window

Pricing

DeepSeek-V4.1-Flash pricing per 1M tokens

Free tier listed

Input $0.3 per 1M tokens

Output $1.2 per 1M tokens

Access Available ModelScope

Availability

DeepSeek-V4.1-Flash availability by provider

2 alternatives

We found 3 provider listings for deepseek-v4-1-flash. Check model ID, quota, pricing, and API format before switching providers.

Provider	Model listing	Access	Context	API	Limits
ModelScope	deepseek-ai/DeepSeek-V4.1-Flash	Free tier	8K	Native	Varies
NVIDIA NIM	deepseek-ai/deepseek-v4.1-flash	Free tier	1.0M	OpenAI-style	Up to 40 RPM
OpenCode Zen	DeepSeek V4.1 Flash	Free tier	1.0M	Native	Varies

View ModelScope setup guide →

Compare

DeepSeek-V4.1-Flash alternatives to consider

Open comparison

Model	Provider	Context	Access
deepseek-ai/deepseek-v4.1-flash	NVIDIA NIM	1.0M	Free tier
DeepSeek V4.1 Flash	OpenCode Zen	1.0M	Free tier
Qwen/Qwen3.5-35B-A3B	ModelScope	256K	Check provider
Qwen/Qwen3.5-27B	ModelScope	256K	Check provider
MiniMax-M2.5-highspeed	ModelScope	205K	Check provider

Typical Use Cases

DeepSeek-V4.1-Flash use cases

Chat

DeepSeek-V4.1-Flash is tagged for chat in this catalog and works with OpenAI-compatible client libraries.

FAQ

DeepSeek-V4.1-Flash free API FAQ

Is DeepSeek-V4.1-Flash free to use?

DeepSeek-V4.1-Flash is listed with free API access on ModelScope, subject to the provider's quota and account policy.

What is the DeepSeek-V4.1-Flash model ID?

The model ID shown in this catalog is deepseek-ai/DeepSeek-V4.1-Flash.

What context window does DeepSeek-V4.1-Flash support?

The listed context window is 8K tokens with up to 4K output tokens.

More about DeepSeek-V4.1-Flash