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deepseek-aiReleased Sep 10, 2026

deepseek-ai: DeepSeek-V4.1-Flash

deepseek/deepseek-v4.1-flashHugging FaceChatVision8-bitconversationaldeepseek_v41eval-resultsfp8image-text-to-textreasoningtext-generationtools

Input
$0.005
Per million input tokens
Output
$0.01
Per million output tokens
Context
1.0M
Largest endpoint
Max output
131K
Largest endpoint
Modality
Text + Image → Text
textimage

Providers

Live endpoints for this model, cheapest first. TTFT is time to first token, measured on streamed requests; response is request to last byte, measured on every request; throughput covers the last day; uptime is measured over the last day and week.

ProviderContextMax outInputOutputCache readTTFTResponseThroughputCapacityUptime 1dUptime 7dToolsReasoningHealthData
Consensus Protocolfp490% offUS1.0M131K$0.005$0.01$0.001255.29s30m14.9s30m39 tok/s69/80 free99.7%98.2%VerifiedEffortHealthyZDR

Pricing

USD per million tokens.

ProviderInputOutputCache read
Consensus Protocolfp490% off$0.005$0.01$0.00125

Price history

Input price · USD per million tokens

Output price · USD per million tokens

Performance

Timing percentiles cover the labelled window: the last 30 minutes when it has enough samples, otherwise the last day. TTFT is the seconds to the first token, measured only on streamed requests; response is the seconds from request to last byte, measured on every request, streamed or not. Throughput is output tokens per second over the last day, counted only over streamed generations long enough to have a rate — a buffered answer has no generation phase, and a two-token one times the scheduler rather than the model. Tool calls is the share of the last day of tool requests this endpoint answered with a tool call, published once the day holds twenty of them; under that the cell is blank rather than a rate nothing measured.

ProviderTTFT p50p75p90p99Response p50p75p90p99Throughput p50p75p90p99Tool calls 1dRunaways 1d
Consensus Protocolfp45.29s30m6.43s7.96s10.1s14.9s30m32.8s62.9s162.9s39 tok/s48 tok/s58 tok/s73 tok/s—0.0%

Time to first token by hour · last 7 days

Hourly median per provider. The line spans hours with no streamed traffic; where samples are sparse, a dot marks each hour actually timed.

Throughput by hour · last 7 days

Hourly median output tokens per second per provider, over generations long enough to have a rate. The line spans hours with no answer long enough to measure; where samples are sparse, a dot marks each hour actually measured.

Rotating benchmark probes

Diagnostic scores from rotating dataset subsets. Percentages cover graded replies only and are not full benchmark results. Each score belongs to the provider’s serving configuration.

ProviderGSM8KMMLUMMMUaime25math500mmbenchmmlu-pro
Consensus Protocolfp4
99.3%294 graded
92.6%390 graded
86.0%57 graded
100.0%26 graded
100.0%247 graded
91.5%71 graded
88.3%291 graded

Benchmark answers are graded mechanically against the vendored dataset reference answers — numeric comparison of the final number for GSM8K, MATH-500 and AIME 2025, the committed multiple-choice letter for MMLU, MMLU-Pro, MMMU and MMBench, cosine ranking of the returned vectors for the Banking77 and SciDocs retrieval triplets, and per-utterance word match for LibriSpeech and FLEURS — never by another model; a reply that ran into the probe’s token cap before it committed to an answer is recorded but not graded.

Uptime

Share of successful requests and probes over the last day and week.

  • Consensus Protocolfp4
    1d 99.7%7d 98.2%Healthy

Availability by hour · last 7 days

Share of successful requests and probes per hour and provider. The line spans hours with nothing to measure; where samples are sparse, a dot marks each hour actually measured.

Activity

Prompt tokens and completion tokens per UTC day over the last 30 days. Every billed request counts, the platform's own paid probe traffic included.

Prompt tokens3.0Blast 30 days
Completion tokens87.2Mlast 30 days
Quickstart
curl https://api-staging.impossiblecarrot.cc/api/v1/chat/completions \  -H "Authorization: Bearer $HEIMDALL_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "deepseek/deepseek-v4.1-flash",    "messages": [{ "role": "user", "content": "Hello" }]  }'

Set HEIMDALL_API_KEY to a key from your account. See the quickstart for routing suffixes and provider preferences.

About

We introduce DeepSeek-V4.1-Flash, a multimodal Mixture-of-Experts (MoE) model with 552B backbone parameters and support for contexts of up to one million tokens. The model natively processes images and text, and generates text autoregressively.

Author
deepseek-ai
Family
deepseek/deepseek-v4.1-flash
Parameters
frequency_penalty (-2–2), max_tokens (1–131072), min_p (0–1), presence_penalty (-2–2), reasoning_effort (none, low, medium, high), repetition_penalty (0–2), response_format (any value), seed (0–2147483647), stop (list), temperature (0–2), tool_choice (any value), tools (true/false), top_k (0–200), top_p (0–1)
Licence
mit
Size
763.2B parameters, I8 weights
Tokenizer
—
Available until
—

From the model card

What the repository states about these weights, read from deepseek-ai/DeepSeek-V4.1-Flash on Oct 11, 2026.

Languages
—
Papers
—
Datasets
—
Revision
dba1be0Sep 10, 2026
Downloads
496.7K
Likes
3.4K
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