DeepSeek V4.1 Flash 1017

The October 17, 2026 snapshot of DeepSeek V4.1 Flash supports text and image input, tool calling, and optional reasoning with low, high, and max effort. It has a shared 1,048,576-token context window and supports up to 393,216 output tokens within the remaining context. Released under the MIT license.

Reasoning
Vision
Tool Calling

Added Oct 17, 2026

Model weights

Pricing

Auto routing · per 1M tokens

Input: $0.15
Output: $0.60
Cache read: $0.0030

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Specifications

Context window: 1M
Max output: 393.2K

Benchmarks

Sourced from Artificial Analysis.

Intelligence Index

24.7

Better than 77% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

47.8%

Better than 63% of models compared

AA-Briefcase

Agentic knowledge work (Elo)

1117 Elo

Better than 58% of models compared

GDPval-AA v2

Economically valuable tasks (Elo)

1343 Elo

Better than 70% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

3.8%

Better than 20% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

55.3%

Better than 48% of models compared

Reasoning

HLE

Humanity's Last Exam

10.8%

Better than 51% of models compared

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

5.6%

Better than 57% of models compared

SciCode

Python programming for scientific computing

35.5%

Better than 13% of models compared

Legacy benchmarks

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

55.3%

Better than 47% of models compared

Last updated Oct 17, 2026

Artificial Analysis

Providers

Auto routing is available for this model. Explicit provider selection is not available.

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Reliability

Last 3 days