The Model Index
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DeepSeek V4.1 Flash 1017 vs Gemini 3.8 Flash

On the index (GPT-4 = 100), DeepSeek V4.1 Flash 1017 scores 176 and Gemini 3.8 Flash 175. Side by side on the same third-party tests, with price and context. The link in your address bar shares this exact comparison.

Next to DeepSeek V4.1 Flash 1017
Presets
DeepSeek V4.1 Flash 1017
176160–192
WeightsOpen
ReleasedOct 2026
Price in / out$0.30 / $1.2
Context1.05M
Core tests taken5 of 9
Gemini 3.8 Flash
175159–191
WeightsClosed
ReleasedSep 2026
Price in / out$0.82 / $4.13
Context1.05M
Core tests taken7 of 9

DeepSeek V4.1 Flash 1017 and Gemini 3.8 Flash are too close to call (1 point apart, within the uncertainty), ahead on 2 of 5 shared core tests, and costs 3.1× less.

Test by testthird-party results

DeepSeek V4.1 Flash 1017Gemini 3.8 Flash
0%25%50%75%100%REASONING & KNOWLEDGEGPQA Diamond (Epoch AI)GPQA Diamond (Epoch AI)SimpleQA VerifiedSimpleQA VerifiedMATHSFrontierMath (tiers 1-3)FrontierMath (tiers 1-3)AIME-style maths (OTIS mock)AIME-style maths (OTIS mock)Chess puzzlesChess puzzlesFrontierMath (tier 4)FrontierMath (tier 4)CODINGTerminal-Bench 4.0Terminal-Bench 4.0Code MigrationCode MigrationVibe Code Bench v1.1Vibe Code Bench v1.1AGENTSMystery game puzzlesMystery game puzzlesPROFESSIONAL WORKFinance Agent (v2)Finance Agent (v2)EMBEMBHLAB-Vals-1.1HLAB-Vals-1.1Legal Research BenchLegal Research BenchTax Agent BenchTax Agent BenchNOVEL PROBLEMSARC-AGI-2ARC-AGI-2ARC-AGI-1ARC-AGI-1
Every result as a table
TestDeepSeek V4.1 Flash 1017Gemini 3.8 Flash
Reasoning & knowledge
GPQA Diamond (Epoch AI)93.2%95.4%
SimpleQA Verified42.5%69.7%
Maths
FrontierMath (tiers 1-3)71.2%68.4%
AIME-style maths (OTIS mock)99.4%98.9%
Chess puzzles46.0%58.0%
FrontierMath (tier 4)46.3%21.9%
Coding
Terminal-Bench 4.031.8%19.7%
Code Migration44.2%36.5%
Vibe Code Bench v1.187.7%78.6%
Agents
Mystery game puzzles49.0%47.0%
Professional work
Finance Agent (v2)57.0%61.4%
EMB61.8%72.2%
HLAB-Vals-1.114.2%12.1%
Legal Research Bench45.2%38.9%
Tax Agent Bench44.4%32.1%
Novel problems
ARC-AGI-278.1%89.2%
ARC-AGI-194.5%98.5%

Tests at least two of these models have taken. Bold rows are the core tests.

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