DeepSeek V4.1 Flash 1017 API pricing

Capability scores

Epoch AI

Maths3 of 4 benchmarks72

Science and knowledge2 of 2 benchmarks67

CodingNot tested by Epoch

Reasoning and puzzles2 of 2 benchmarks44

Agents and long tasksNot tested by Epoch

Each bar is this model's score in that area. The white tick marks the best score any model Epoch has tested reaches there.

Epoch Capabilities Index

159

Range 157 to 162 · #19 of 271 models Epoch has scored

Maths

72average of 3 of 4 Epoch results

FrontierMath (tiers 1 to 3) (max)71%

FrontierMath (tier 4) (max)46%

OTIS Mock AIME (max)99%

Science and knowledge

67average of 2 of 2 Epoch results

GPQA Diamond (max)93%

SimpleQA Verified (max)43%

Reasoning and puzzles

44average of 2 of 2 Epoch results

Chess puzzles (max)46%

Mystery game puzzles (max)49%

The index combines many benchmarks into one general-capability score; the range is how sure Epoch is of the number. Each area score is this site's average of the model's Epoch results in that area, where 0 is what guessing would score and 100 is perfect. Compare every model, and value for money →

Source: Epoch AI, Capabilities & benchmarking (licensed CC BY 4.0). Data refreshed 2 November 2026. These are Epoch's own tests; other benchmark sites can rank models differently.

Cheaper models that come close

Our working on Epoch's index

Models within 5 points of DeepSeek V4.1 Flash 1017 on Epoch's Capabilities Index that cost less, comparing a typical chat mix (three parts input to one part output). A few points of index is a small difference and says nothing about your task: a place to start testing, not a verdict. Capability against price for every model.

Specification

USD per million tokens

Provider: DeepSeek
Model id: deepseek/deepseek-v4.1-flash-1017
Input: $0.15
Output: $0.60
Cached input: $0.003
Context window: 1.0M tokens
Maximum output: 393K tokens
Takes: text, image
Returns: text
Tool use: Yes
Reasoning: Yes
Released: 17 Oct 2026
First tracked: 17 Oct 2026

At $0.15 per million input tokens, DeepSeek V4.1 Flash 1017 is dearer than 85 of the 340 models on the price list.

Price changes

Tracked since 17 Sept 2026

No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.

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Coverage

1 story

The Decoder · 17 Oct 2026
Deepseek V4.1 Flash 1017 beats larger rivals in agentic tasks while once again massively cutting per-task costs

DeepSeek V4.1 Flash 1017 API pricing.