Glimmer Index
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DeepSeek V4.1 Flash

DeepSeek · Released Sep 10, 2026 · 48 days ago · Open weights

DeepSeek V4.1 Flash model for reasoning and agentic coding

Strongest at
Coding
Top 7% of the past year's models · 2 of 7 benchmarks
Price per 1M tokens
$0.14 / $0.42
input / output · OpenRouter
Context window
1M
tokens in · 384K out
Since the last one
41 days
after DeepSeek V4 Flash 0731
Lab announcement ↗Open in the timeline

Capability profile

Scored against 91 models released in the past year. 50 is the average model; further out is better.

This modelDeepSeek V4 Flash 0731Median of the past year
5090Median of the past yearCoding: 72 · Top 7%Writing: 56 · Top 49%Reading & documents: 60 · Top 30%Reasoning: 68 · Top 24%Math: 60 · Top 41%Science: 62 · Better than 39%Visual reasoning: 54 · Better than 47%Computer use: 68 · Top 50%DeepSeek V4 Flash 0731: 38DeepSeek V4 Flash 0731: 52DeepSeek V4 Flash 0731: 59DeepSeek V4 Flash 0731: 61DeepSeek V4 Flash 0731: 55DeepSeek V4 Flash 0731: 64CodingWritingReadingReasoningMathScienceVisionComputer use
Coding72+34.5Top 7%
Writing56+4.3Top 49%
Reading & documents60+1.5Top 30%
Reasoning68+7.1Top 24%
Math60+4.9Top 41%
Science62−2.7Better than 39%
Visual reasoning54Better than 47% · 1 test
Computer use68Top 50% · 1 test
Where these scores come from

Each capability combines the published benchmarks listed here, rescaled so 50 is the reference average and 15 points is one standard deviation. A hollow dot rests on a single benchmark.

Price against capability

The shaded corner holds anything better and cheaper. Prices blend input and output 3 to 1.

Nothing from the past year scores higher on Coding for less.

$0.3$1$3$10020406080Claude Haiku 5.5: 60, $0.2 per 1MMistral Large 4: 56, $2.06 per 1MGemini 4 Argon: 65, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 71, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 55, $0.2 per 1MClaude Opus 5.5: 79, $8 per 1MGrok 4.7: 59, $3 per 1MGPT-6 Astra: 73, $20 per 1MMuse Spark 1.3: 69, $2 per 1MGemini 3.8 Flash: 57, $1.5 per 1MClaude Fable 5.1: 85, $20 per 1MGLM-5.3-Flash: 54, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 55, $0.32 per 1MQwen3.8 27B: 60, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 59, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MGrok 4.6: 60, $3 per 1MMuse Spark 1.2: 53, $2 per 1MQwen3.8 Max: 55, $3 per 1MClaude Opus 5: 69, $10 per 1MGemini 3.6 Flash: 44, $1.5 per 1MGemini 3.5 Flash Lite: 41, $0.85 per 1MKimi K3: 63, $6 per 1MGPT-5.6 Terra: 58, $4.5 per 1MGPT-5.6 Sol: 68, $8 per 1MGPT-5.6 Luna: 56, $0.45 per 1MGrok 4.5: 50, $3 per 1MClaude Sonnet 5: 60, $4 per 1MGLM-5.2: 48, $2.15 per 1MKimi K2.7 Code: 36, $1.71 per 1MClaude Fable 5: 77, $20 per 1MQwen3.7 Plus: 25, $0.7 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 47, $3.38 per 1MDeepSeek V4 Pro: 41, $1.19 per 1MDeepSeek V4 Flash: 23, $0.18 per 1MGPT-5.5: 58, $11.2 per 1MQwen3.6 27B: 29, $1.35 per 1MKimi K2.6: 52, $1.71 per 1MGrok 4.3: 1, $1.56 per 1MGrok Build 0.1: 29, $1.25 per 1MClaude Opus 4.7: 60, $10 per 1MMuse Spark 1.1: 52, $2 per 1MGLM-5.1: 55, $2.15 per 1MQwen3.6 Plus: 39, $1.12 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 37, $1.69 per 1MGPT-5.4: 52, $5.62 per 1MGemini 3.1 Pro Preview: 38, $4.5 per 1MClaude Sonnet 4.6: 35, $6 per 1MGLM-5: 52, $1.55 per 1MGPT-5.3 Codex: 56, $4.81 per 1MClaude Opus 4.6: 54, $10 per 1MKimi K2.5: 54, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 55, $4.81 per 1MGPT-5.2: 57, $4.81 per 1MDeepSeek V3.2: 68, $0.32 per 1MClaude Opus 4.5: 59, $10 per 1MGPT-5.1: 46, $3.44 per 1MDeepSeek V4 Flash 0731: 38, $0.15 per 1MDeepSeek V4.1 Flash: 72, $0.21 per 1MDeepSeek V4.1 FlashPrice per 1M tokens →↑ Coding$1$10020406080Claude Haiku 5.5: 60, $0.2 per 1MMistral Large 4: 56, $2.06 per 1MGemini 4 Argon: 65, $4 per 1MGPT-6.1 Sol: 64, $4 per 1MClaude Sonnet 5.5: 71, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 55, $0.2 per 1MClaude Opus 5.5: 79, $8 per 1MGrok 4.7: 59, $3 per 1MGPT-6 Astra: 73, $20 per 1MMuse Spark 1.3: 69, $2 per 1MGemini 3.8 Flash: 57, $1.5 per 1MClaude Fable 5.1: 85, $20 per 1MGLM-5.3-Flash: 54, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 55, $0.32 per 1MQwen3.8 27B: 60, $1.12 per 1MGLM-5.3: 60, $2.15 per 1MGemini 3.7 Flash: 59, $1.5 per 1MDeepSeek V4 Pro 0813: 49, $0.99 per 1MGrok 4.6: 60, $3 per 1MMuse Spark 1.2: 53, $2 per 1MQwen3.8 Max: 55, $3 per 1MClaude Opus 5: 69, $10 per 1MGemini 3.6 Flash: 44, $1.5 per 1MGemini 3.5 Flash Lite: 41, $0.85 per 1MKimi K3: 63, $6 per 1MGPT-5.6 Terra: 58, $4.5 per 1MGPT-5.6 Sol: 68, $8 per 1MGPT-5.6 Luna: 56, $0.45 per 1MGrok 4.5: 50, $3 per 1MClaude Sonnet 5: 60, $4 per 1MGLM-5.2: 48, $2.15 per 1MKimi K2.7 Code: 36, $1.71 per 1MClaude Fable 5: 77, $20 per 1MQwen3.7 Plus: 25, $0.7 per 1MClaude Opus 4.8: 62, $10 per 1MQwen3.7 Max: 48, $3.75 per 1MGemini 3.5 Flash: 47, $3.38 per 1MDeepSeek V4 Pro: 41, $1.19 per 1MDeepSeek V4 Flash: 23, $0.18 per 1MGPT-5.5: 58, $11.2 per 1MQwen3.6 27B: 29, $1.35 per 1MKimi K2.6: 52, $1.71 per 1MGrok 4.3: 1, $1.56 per 1MGrok Build 0.1: 29, $1.25 per 1MClaude Opus 4.7: 60, $10 per 1MMuse Spark 1.1: 52, $2 per 1MGLM-5.1: 55, $2.15 per 1MQwen3.6 Plus: 39, $1.12 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 37, $1.69 per 1MGPT-5.4: 52, $5.62 per 1MGemini 3.1 Pro Preview: 38, $4.5 per 1MClaude Sonnet 4.6: 35, $6 per 1MGLM-5: 52, $1.55 per 1MGPT-5.3 Codex: 56, $4.81 per 1MClaude Opus 4.6: 54, $10 per 1MKimi K2.5: 54, $1 per 1MGemini 3 Flash Preview: 49, $1.12 per 1MGPT-5.2 Codex: 55, $4.81 per 1MGPT-5.2: 57, $4.81 per 1MDeepSeek V3.2: 68, $0.32 per 1MClaude Opus 4.5: 59, $10 per 1MGPT-5.1: 46, $3.44 per 1MDeepSeek V4 Flash 0731: 38, $0.15 per 1MDeepSeek V4.1 Flash: 72, $0.21 per 1MDeepSeek V4.1 FlashPrice per 1M tokens →↑ Coding

OpenRouter $0.14 / $0.42 · Cached input $0.004

Since DeepSeek V4 Flash 0731

5 releases in the DeepSeek line.

DeepSeek V4 Flash 0423Apr 23, 20261dDeepSeek V4 FlashApr 24, 202698dDeepSeek V4 Flash 0731Jul 31, 202641dDeepSeek V4.1 FlashSep 10, 202637dDeepSeek V4.1 Flash 1017Oct 17, 2026
Released41 days later
Price in / out$0.14 / $0.42+41%
Context1Msame
Coding72+34.5
Writing56+4.3
Reading & documents60+1.5
Reasoning68+7.1
Math60+4.9
Science62−2.7

A newer release is out: DeepSeek V4.1 Flash 1017.

ECI STANDING#32 of 270
SCORE155.93153.68–158.59 CI
FRONTIER LAGLaunched 8.9 months behindScores about what GPT-5.2 Pro did in December 2025.
SCORES LIKE THESE MODELSGPT-5.2 ProOpenAI · Dec 2025156.33GLM-5.3Z.ai (Zhipu AI) · Aug 2026155.99Claude Opus 4.6Anthropic · Feb 2026155.66DeepSeek V4 Pro 0813DeepSeek · Aug 2026155.64
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

Best result on each board it has run. The tick marks the leader.

OTIS Mock AIME 2024-2025
98%#26 of 216
ARC-AGI
94%#19 of 107
Mystery Game Puzzles
43%#16 of 88
GPQA diamond
90%#45 of 234
ARC-AGI-2
73%#20 of 103
Chess Puzzles
48%#23 of 93
DTBench
90%#50 of 179
ProofBench
54%#28 of 81
8 more boards
FrontierMath-Tiers-1-3-v2-Private
67%#33 of 90
FrontierCode
44%#17 of 46
SimpleQA Verified
43%#44 of 85
FrontierMath-Tier-4-v2-Private
27%#40 of 72
Furniture Assembly
34%#22 of 35
Surface Evolver Bench
46%#17 of 26
APEX-Agents
40%#39 of 51
WeirdML v3
12%#19 of 23

DeepSeek's past year

9 release days in the past year, about one every 41 days. The next is expected around Nov 28, 2026. Forecasts ↗

NovDecJanFebMarAprMayJunJulAugSepOctNov

Specifications

RELEASE DATESep 10, 2026
WEIGHTSOpen weights
CONTEXT WINDOW1M
MAX OUTPUT384K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/jpeg, image/png, image/gif, image/webp
OUTPUTStext

Models.dev record ↗

Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.