Now on VeniceLLMReasoningOpen weights

DeepSeek V4.1 Flash Uncensored

A community-abliterated, FP8 build of DeepSeek's 552B multimodal MoE — vision, tools, and controllable reasoning with the refusal circuitry surgically removed.

For agents
curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-1-flash-uncensored",
    "messages": [{ "role": "user", "content": "Explain quantum tunneling simply." }]
  }'
Model IDdeepseek-v4-1-flash-uncensored
Maker
DeepSeek (base); uncensored FP8 build by dealignai
Context
512K tokens
Reasoning
Supported
Privacy
Private

Overview

What is DeepSeek V4.1 Flash Uncensored

DeepSeek V4.1 Flash Uncensored is a community-abliterated build of DeepSeek's V4.1-Flash, a 552B-parameter multimodal Mixture-of-Experts model with 8B/16B active parameters, native vision, tool use, and controllable reasoning. The dealignai FP8 checkpoint removes refusal circuitry at the weight level while preserving capability, and it runs on Venice with zero prompt retention.

Running it privately on Venice

On Venice, this abliterated DeepSeek build runs under the private tier: your prompts are never stored, profiled, or used for training — zero retention, no personal history tied to your requests. That matters double here, because an uncensored model is exactly the kind of workload Big-Tech APIs log, flag, and de-platform. You also get it at $0.33 per 1M input tokens with cached input at just $0.01, permissionless via the app or the OpenAI-compatible API.

PrivateNo prompt trainingTEE · hardware enclaveEnd-to-end encrypted

Agent quickstart

Three calls, copied straight out

The API is OpenAI-compatible: change the base URL and the model id and existing client code works unchanged.

Streaming chat

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-1-flash-uncensored",
    "stream": true,
    "messages": [{ "role": "user", "content": "Draft the release note." }]
  }'

Tool calling

curl https://api.venice.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-1-flash-uncensored",
    "messages": [{ "role": "user", "content": "Find the rate limits." }],
    "tools": [{
      "type": "function",
      "function": {
        "name": "search_docs",
        "description": "Search the API documentation.",
        "parameters": {
          "type": "object",
          "properties": { "query": { "type": "string" } },
          "required": ["query"]
        }
      }
    }],
    "tool_choice": "auto"
  }'

Python SDK

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["VENICE_API_KEY"],
    base_url="https://api.venice.ai/api/v1",
)

resp = client.chat.completions.create(
    model="deepseek-v4-1-flash-uncensored",
    messages=[{"role": "user", "content": "Build without permission."}],
)
print(resp.choices[0].message.content)

Specifications

Datasheet

Maker
DeepSeek (base); uncensored FP8 build by dealignai
Modality
Text and image input, text output (multimodal MoE)
Open weights
Yes — MIT (base model)
License
MIT (base model)
Context window
512K tokens
Input images
RGB images; multiple images per request; up to 1,024 image tokens per image with a minimum area of 295,936 pixels
Released
September 10, 2026 (base); uncensored build October 2026; on Venice since Oct 2026
Architecture
Causal Encoder-Decoder MoE (20+20 layers), CSA2 sparse attention, Hyper-Connections, Engram n-gram memory, DSpark speculative drafting
Parameters
552B total; 8B active (prefill) / 16B active (decode)
Quantization
Native FP8 (e4m3fn) weights with FP4 routed experts
Max output
128K tokens
Capabilities
Vision, Function calling, Reasoning, Web search, Code-optimized
Privacy on Venice
Private — zero retention
Available on Venice since
Oct 2026

Assessment

Strengths and limitations

Strengths
  • Genuinely uncensored: refusal circuitry is removed at the weight level, so it answers prompts the base model declines — no runtime hooks or steering vectors to break mid-session.
  • Full modern capability stack: vision (multiple image inputs), tool use / function calling, structured JSON output, web search, and reasoning with controllable effort.
  • Remarkably cheap for its class: $0.33 in / $1.32 out per 1M tokens, with cached input at $0.01/M, a direct payoff of the architecture's compressed KV cache.
  • Asymmetric Causal Encoder-Decoder design (8B active prefill, 16B decode) makes it especially efficient for input-heavy agentic workloads like document parsing and repo-scale code.
  • Open MIT-licensed base weights: self-hostable, fine-tunable, and independently auditable, unlike every closed rival in its price bracket.
  • The base V4.1-Flash family benchmarks ahead of DeepSeek's own former flagship V4-Pro on performance, cost, and speed.
Limitations
  • This is a community modification, not an official DeepSeek release — the abliteration metrics are distributor-reported, not vendor-verified.
  • No built-in guardrails of any kind: anyone deploying the open weights themselves must add their own input and output moderation.
  • Venice serves a 512K-token context window, not the full 1M-token context the upstream checkpoint supports.
  • The FP8/FP4 quantized checkpoint trades a small amount of fidelity for serving efficiency, and the deepseek_v41 architecture is not yet in mainline transformers/vLLM, which complicates self-hosting.
  • Abliteration can degrade edge-case behavior on sensitive tasks; the base model's own alignment is surgically altered, so outputs deserve more scrutiny than a stock model's.

Use cases

What it is good for

  1. 01Red-teaming, offensive-security research, and refusal-rate evaluation where stock models simply decline to engage.
  2. 02Long-context agentic pipelines that parse documents and images, call tools, and return structured JSON — at a fraction of frontier pricing.
  3. 03Repo-scale code analysis and refactoring within the 512K-token window, with cached system prompts billed at $0.01/M.
  4. 04Private research on sensitive or controversial topics where prompt logging by a mainstream provider is a dealbreaker.
  5. 05Multimodal assistants that need to reason over several images and documents in a single turn.

Prompting

Getting better results

Enforce a JSON schema in your request when you need machine-readable output — structured output is supported natively.

Attach multiple images in one turn for comparisons; the vision tower handles several inputs per request.

Dial reasoning effort explicitly: leave it at the abliterated build's reasoning-max default for hard problems, lower it for snappy chat.

Keep your system prompt and reference documents stable across calls so they hit the $0.01/M cached-input rate.

Front-load long context — the 8B-active prefill makes input-heavy prompts disproportionately cheap relative to output.

Use function calling for agent loops rather than parsing free text; the model is code-optimized and tool-trained.

Alternatives

How it compares

ModelBest forContextOpen weightsPrice (Venice)
DeepSeek V4.1 Flash UncensoredCheap private agentic work with vision & tools524K tokensYes$0.33 in · $1.32 out / 1M
Gemini 3.8 FlashFast general multimodal chat1M tokensNo$0.94 in · $4.69 out / 1M
Qwen 3.7 PlusBalanced long-context assistant work1M tokensNo$0.50 in · $2 out / 1M
Kimi K3Maximum-context research & agents1M tokensYes$3.75 in · $18.75 out / 1M

Pick DeepSeek V4.1 Flash Uncensored when you need an uncensored, open-weights workhorse with vision, tools, and reasoning at the lowest output price in its class — and accept 512K of context instead of 1M. Kimi K3 is the upgrade path when maximum context justifies 14× the cost.

Pricing

What it costs on Venice

Billed per token on Venice: $0.33 per 1M input tokens and $1.32 per 1M output tokens.

Input / 1M tokens
$0.33
Per 1M tokens
Output / 1M tokens
$1.32
Per 1M tokens
Cached input / 1M
$0.01
Per 1M tokens

New Venice accounts include a free daily allowance and 500 welcome credits — no credit card required.

Getting a key

From nothing to a first call

  1. 01

    Create a key in API settings. Nothing else is required to start.

  2. 02

    Export it as VENICE_API_KEY so the snippets above run unedited.

  3. 03

    Point an existing OpenAI client at https://api.venice.ai/api/v1. The scheme is part of the value: an OpenAI client given a bare host does not resolve it.

  4. 04

    Pass deepseek-v4-1-flash-uncensored as the model and send the request.

FAQ

Frequently asked questions

It is a community-abliterated build of DeepSeek's V4.1-Flash, a 552B-parameter multimodal Mixture-of-Experts model with 8B/16B active parameters. The dealignai FP8 checkpoint removes the model's refusal circuitry at the weight level while preserving vision, reasoning, tool use, and multi-turn coherence. On Venice it runs with zero prompt retention.

Venice bills it per token: $0.33 per 1M input tokens, $1.32 per 1M output tokens, and just $0.01 per 1M cached input tokens. There is no subscription required — you pay for what you use.

Yes. The base model, DeepSeek V4.1-Flash, is released under the MIT license, and the uncensored FP8 checkpoint is published on Hugging Face. You can self-host or fine-tune it, though the deepseek_v41 architecture is not yet in mainline transformers/vLLM and needs DeepSeek's reference runtime tooling.

Yes — the refusal circuitry is removed permanently at the weight level via abliteration, not via a system prompt or runtime filter that can be re-enabled. The trade-off is that it has no guardrails of its own, so outputs on sensitive topics deserve scrutiny, and self-hosters must add their own moderation.

Yes. It natively accepts RGB images (multiple per request, up to 1,024 image tokens per image) and supports function calling, structured JSON output, web search, and continuously controllable reasoning effort. It is also code-optimized for programming workloads.

Venice serves it with a 512K-token context window and up to 128K output tokens. The upstream checkpoint supports up to 1M tokens, so Venice's deployment trades some maximum context for efficient serving at low prices.

Choose the DeepSeek build when you need uncensored outputs, open MIT-licensed weights, and the lowest cost — $0.33/$1.32 per 1M versus Gemini's $0.94/$4.69. Choose Gemini 3.8 Flash when you want a polished, moderated general assistant and a full 1M-token context and don't mind closed weights.

Venice runs it under its private tier with zero retention: prompts and outputs are not stored, profiled, or used for training, and requests are not tied to a personal behavioral history. Note that inference is not end-to-end encrypted in a TEE — the privacy guarantee is Venice's no-storage policy.

DeepSeek published the MIT-licensed base model on September 10, 2026, but released no uncensored version itself. The FP8 checkpoint Venice hosts was produced by the dealignai research team, one of several community abliteration builds that appeared within weeks of the base release.

Run DeepSeek V4.1 Flash Uncensored privately

One key, free to start, no credit card.

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