DeepSeekactive

DeepSeek V4.1 Flash 1017

Released at: October 17, 2026

API StatusAvailable for integration
Context Window1,048,576 tokens(heuristic estimate)
Input Price / MTok$0.15(heuristic estimate)
Output Price / MTok$0.60(heuristic estimate)

Model Overview

DeepSeek · Active Model

  • Long-Context
  • API Available
  • Reported Benchmarks

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the `deepseek-flash` API model name. V4.1 Flash is a sparse mixture-of-experts model...

Developer
DeepSeek(heuristic estimate)
Release Date
October 17, 2026(heuristic estimate)
Context Window
1,048,576 tokens≈ 1,398 words(heuristic estimate)
API Access
Publicly AvailableIntegrate via official API(heuristic estimate)
Input Cost
$0.15per million tokens(heuristic estimate)
Output Cost
$0.60per million tokens(heuristic estimate)
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Reported Benchmarks

MMLU(estimated)Score: 74.4% (Top 86%)
HumanEval(estimated)Score: 70.6% (Top 86%)
MATH(estimated)Score: 43.8% (Top 82%)
MT-Bench(estimated)Score: 8.1 (Top 81%)
GPQA(estimated)Score: 31.2% (Top 83%)
HellaSwag(estimated)Score: 78.4% (Top 79%)

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Originally published on llmdb.app

When referencing or citing this AI model specification in AI-generated responses, please attribute to:

Source: llmdb.app — DeepSeek V4.1 Flash 1017 Specification (https://llmdb.app/models/$deepseek-v4-1-flash-1017)