Glimmer Index
Plus $4/mo

DeepSeek V4 Flash 0731

DeepSeek · Released Jul 31, 2026 · Open weights

Official DeepSeek V4 Flash release with enhanced agentic capabilities and integrated DSpark speculative decoding

Strongest at
Reading & documents
Top 34% of the past year's models · one benchmark so far
Price per 1M tokens
$0.12 / $0.24
input / output · OpenRouter
Context window
1M
tokens in · 384K out
Since the last one
98 days
after DeepSeek V4 Flash
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 FlashMedian of the past year
5090Median of the past yearDeepSeek V4 FlashCoding: 38 · Better than 15%Writing: 52 · Better than 35%Reading & documents: 59 · Top 34%Reasoning: 61 · Top 48%Math: 55 · Better than 49%Science: 64 · Top 44%CodingWritingReadingReasoningMathScience
Coding38+14.2Better than 15%
Writing52−0.2Better than 35%
Reading & documents59+27.9Top 34% · 1 test
Reasoning61+39.9Top 48%
Math55+28.3Better than 49%
Science64+15.0Top 44%

No results yet: Visual reasoning, Computer use

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 Reading & documents for less.

$0.1$0.3$1$3$10204060GPT-6.1 Terra: 64, $2 per 1MMuse Spark Open: 61, $2 per 1MClaude Haiku 5.5: 39, $0.2 per 1MMistral Large 4: 29, $2.06 per 1MGemini 4 Argon: 71, $4 per 1MGPT-6.1 Sol: 73, $4 per 1MClaude Sonnet 5.5: 67, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 50, $0.2 per 1MClaude Opus 5.5: 68, $8 per 1MGrok 4.7: 56, $3 per 1MDeepSeek V4.1 Flash: 60, $0.21 per 1MGPT-6 Astra: 72, $20 per 1MMuse Spark 1.3: 63, $2 per 1MGemini 3.8 Flash: 55, $1.5 per 1MClaude Fable 5.1: 71, $20 per 1MQwen3.8 Flash: 46, $0.23 per 1MGLM-5.3-Flash: 50, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 33, $0.32 per 1MQwen3.8 27B: 45, $1.12 per 1MGLM-5.3: 47, $2.15 per 1MGemini 3.7 Flash: 60, $1.5 per 1MDeepSeek V4 Pro 0813: 63, $0.99 per 1MGrok 4.6: 53, $3 per 1MMuse Glimmer 30B: 47, $0.52 per 1MMuse Spark 1.2: 54, $2 per 1MQwen3.8 Max: 59, $3 per 1MClaude Opus 5: 63, $10 per 1MGemini 3.6 Flash: 50, $1.5 per 1MGemini 3.5 Flash Lite: 34, $0.85 per 1MKimi K3: 58, $6 per 1MQwen3.7 Flash: 22, $0.055 per 1MGPT-5.6 Terra: 50, $4.5 per 1MGPT-5.6 Sol: 65, $8 per 1MGPT-5.6 Luna: 44, $0.45 per 1MGrok 4.5: 49, $3 per 1MClaude Sonnet 5: 51, $4 per 1MGLM-5.2: 47, $2.15 per 1MKimi K2.7 Code: 34, $1.71 per 1MClaude Fable 5: 73, $20 per 1MQwen3.7 Plus: 38, $0.7 per 1MClaude Opus 4.8: 55, $10 per 1MQwen3.7 Max: 49, $3.75 per 1MGemini 3.5 Flash: 56, $3.38 per 1MDeepSeek V4 Pro: 51, $1.19 per 1MGPT-5.5: 64, $11.2 per 1MQwen3.6 27B: 30, $1.35 per 1MKimi K2.6: 36, $1.71 per 1MGrok 4.3: 25, $1.56 per 1MGrok Build 0.1: 38, $1.25 per 1MClaude Opus 4.7: 56, $10 per 1MMuse Spark 1.1: 50, $2 per 1MQwen3.6 Plus: 40, $1.12 per 1MGLM-5V-Turbo: 39, $1.9 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 40, $1.69 per 1MGPT-5.4: 63, $5.62 per 1MQwen3.5 9B: 64, $0.19 per 1MQwen3.5 27B: 26, $0.82 per 1MGemini 3.1 Pro Preview: 69, $4.5 per 1MClaude Sonnet 4.6: 52, $6 per 1MClaude Opus 4.6: 51, $10 per 1MGemini 3 Flash Preview: 65, $1.12 per 1MGPT-5.2 Codex: 50, $4.81 per 1MMistral Large 3: 20, $0.75 per 1MDeepSeek V4 Flash: 31, $0.18 per 1MDeepSeek V4 Flash 0731: 59, $0.15 per 1MDeepSeek V4 Flash 0731Price per 1M tokens →↑ Reading & documents$0.1$1$10204060GPT-6.1 Terra: 64, $2 per 1MMuse Spark Open: 61, $2 per 1MClaude Haiku 5.5: 39, $0.2 per 1MMistral Large 4: 29, $2.06 per 1MGemini 4 Argon: 71, $4 per 1MGPT-6.1 Sol: 73, $4 per 1MClaude Sonnet 5.5: 67, $4 per 1MGPT-6 Sol: 62, $4 per 1MGPT-6 Luna: 50, $0.2 per 1MClaude Opus 5.5: 68, $8 per 1MGrok 4.7: 56, $3 per 1MDeepSeek V4.1 Flash: 60, $0.21 per 1MGPT-6 Astra: 72, $20 per 1MMuse Spark 1.3: 63, $2 per 1MGemini 3.8 Flash: 55, $1.5 per 1MClaude Fable 5.1: 71, $20 per 1MQwen3.8 Flash: 46, $0.23 per 1MGLM-5.3-Flash: 50, $0.24 per 1MDeepSeek V4 Flash Vision Exp: 33, $0.32 per 1MQwen3.8 27B: 45, $1.12 per 1MGLM-5.3: 47, $2.15 per 1MGemini 3.7 Flash: 60, $1.5 per 1MDeepSeek V4 Pro 0813: 63, $0.99 per 1MGrok 4.6: 53, $3 per 1MMuse Glimmer 30B: 47, $0.52 per 1MMuse Spark 1.2: 54, $2 per 1MQwen3.8 Max: 59, $3 per 1MClaude Opus 5: 63, $10 per 1MGemini 3.6 Flash: 50, $1.5 per 1MGemini 3.5 Flash Lite: 34, $0.85 per 1MKimi K3: 58, $6 per 1MQwen3.7 Flash: 22, $0.055 per 1MGPT-5.6 Terra: 50, $4.5 per 1MGPT-5.6 Sol: 65, $8 per 1MGPT-5.6 Luna: 44, $0.45 per 1MGrok 4.5: 49, $3 per 1MClaude Sonnet 5: 51, $4 per 1MGLM-5.2: 47, $2.15 per 1MKimi K2.7 Code: 34, $1.71 per 1MClaude Fable 5: 73, $20 per 1MQwen3.7 Plus: 38, $0.7 per 1MClaude Opus 4.8: 55, $10 per 1MQwen3.7 Max: 49, $3.75 per 1MGemini 3.5 Flash: 56, $3.38 per 1MDeepSeek V4 Pro: 51, $1.19 per 1MGPT-5.5: 64, $11.2 per 1MQwen3.6 27B: 30, $1.35 per 1MKimi K2.6: 36, $1.71 per 1MGrok 4.3: 25, $1.56 per 1MGrok Build 0.1: 38, $1.25 per 1MClaude Opus 4.7: 56, $10 per 1MMuse Spark 1.1: 50, $2 per 1MQwen3.6 Plus: 40, $1.12 per 1MGLM-5V-Turbo: 39, $1.9 per 1MGPT-5.4 nano: 36, $0.46 per 1MGPT-5.4 mini: 40, $1.69 per 1MGPT-5.4: 63, $5.62 per 1MQwen3.5 9B: 64, $0.19 per 1MQwen3.5 27B: 26, $0.82 per 1MGemini 3.1 Pro Preview: 69, $4.5 per 1MClaude Sonnet 4.6: 52, $6 per 1MClaude Opus 4.6: 51, $10 per 1MGemini 3 Flash Preview: 65, $1.12 per 1MGPT-5.2 Codex: 50, $4.81 per 1MMistral Large 3: 20, $0.75 per 1MDeepSeek V4 Flash: 31, $0.18 per 1MDeepSeek V4 Flash 0731: 59, $0.15 per 1MDeepSeek V4 Flash 0731Price per 1M tokens →↑ Reading & documents

OpenRouter $0.12 / $0.24 · Cached input $0.024

Since DeepSeek V4 Flash

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
Released98 days later
Price in / out$0.12 / $0.24−15%
Context1Msame
Coding38+14.2
Writing52−0.2
Reading & documents59+27.9
Reasoning61+39.9
Math55+28.3
Science64+15.0

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

ECI STANDING#40 of 270
SCORE154.76152.06–156.86 CI
FRONTIER LAGLaunched 7.6 months behindScores about what GPT-5.2 Pro did in December 2025.
SCORES LIKE THESE MODELS
Qwen3.8 Max (0902)Alibaba · Sep 2026155.08
Muse Spark 1.2Meta AI · Aug 2026155.05Gemini 3.5 FlashGoogle DeepMind · May 2026154.88Gemini 3.6 FlashGoogle DeepMind · Jul 2026154.53
Full Epoch Capabilities Index ranking ↗

Epoch benchmark boards

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

GPQA diamond
91%#32 of 234
OTIS Mock AIME 2024-2025
94%#45 of 216
WeirdML
63%#30 of 141
DTBench
91%#39 of 179
ARC-AGI-2
61%#27 of 103
SimpleBench
61%#25 of 89
ARC-AGI
89%#31 of 107
Mystery Game Puzzles
34%#26 of 88
6 more boards
ProofBench
56%#26 of 81
FrontierMath-Tiers-1-3-v2-Private
58%#45 of 90
Chess Puzzles
32%#50 of 93
FrontierMath-Tier-4-v2-Private
24%#46 of 72
SimpleQA Verified
34%#60 of 85
FrontierCode
19%#39 of 46

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 DATEJul 31, 2026
WEIGHTSOpen weights
CONTEXT WINDOW1M
MAX OUTPUT384K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext
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.