DeepSeek V3.1 vs DeepSeek V4.1-Flash vs DeepSeek V4-Pro

Best cell per row highlighted. Null means undisclosed — never counted as zero.

DeepSeek
DeepSeek V3.1GA
7.7
AI Panel
DeepSeek
DeepSeek V4.1-FlashGA
8.6
AI Panel
DeepSeek
DeepSeek V4-ProGA
8.5
AI Panel

Identity & lifecycle

ProviderDeepSeekDeepSeekDeepSeek
Family / tierDeepSeek V3 · LargeDeepSeek V4 · FlashDeepSeek V4 · Pro
StatusGAGAGA
Released2025-08-212026-09-102026-08-13
Knowledge cutoff2025-06—2026-02

Architecture & context

Context window128K1M1M
Max output tokens8K384K384K
Input modalitiestexttext, imagetext
Reasoning modeoptionaloptionaloptional
Open weightsYesYesYes

Pricing (per Mtok)

Input$0.21$0.3$1.32
Output$0.79$1.2$3.96
Cached input$0.021$0.006$0.044
Batch input———
Free tierNoYesYes

Speed

Output speed (tok/s)———
Time to first token (s)———
Latency tiermediumfastmedium

Trust & deployment

Trains on inputsYesYesYes
LicenseMITMITMIT
Clouds———
Compliance———

AI Panel scoring

Unified score7.78.68.5
Decision Maker7.58.58
Domain Strategist7.598.5
Finance Lead8.599
Domain Practitioner898.5
Power User7.58.57.5
Skeptic7.57.57.5
Value score8.89.69.4

Benchmarks

MMLU-Pro83.7—87.5
GPQA Diamond7490.990.1
AIME 202588——
SWE-bench Verified66—80.6
HumanEval——76.8
LiveCodeBench80—93.5
Aider Polyglot76.3——
Terminal-Bench—90.6—
MRCR Long Context——83.5
SimpleQA——57.9
Humanity's Last Exam—36.837.7
LMArena Elo1417—1463
LMArena Coding Elo1461—1503

Scores link to their sources. Missing cells mean the vendor hasn't disclosed a result — honesty over padding.