Model comparison

DeepSeek V4 Flash vs GPT-4o

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 28.6 on the Noometry Index.

Last verified October 12, 2026. 30 shared benchmarks.

DeepSeek V4 Flash

DeepSeek

53.6

Rank #35 Confirmed

GPT-4o OpenAI

28.6

Rank #324 Confirmed

Summary

They share 30 benchmarks with published results for both. DeepSeek V4 Flash scores higher in 8 categories and GPT-4o in 0 categories; 8 gaps are clear of the uncertainty.
The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 10.6.
The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 94.4% for DeepSeek V4 Flash and 6.4% for GPT-4o.
DeepSeek V4 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $2.50 / $10 for GPT-4o.
DeepSeek V4 Flash accepts more context: 1M tokens versus 128K.
DeepSeek V4 Flash has downloadable open weights; the other is API-only.

Side by side

DeepSeek V4 Flash and GPT-4o specifications
	DeepSeek V4 Flash	GPT-4o
Provider	DeepSeek	OpenAI
Noometry Index	53.6	28.6
Released	2026-04-24	2024-05-13
Weights	Open	Proprietary
Context window	1M	128K
Max output	393K	16K
Input $ / M tokens	$0.15	$2.50
Output $ / M tokens	$0.60	$10
Results tracked	41	72

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Category by category

Coding DeepSeek V4 Flash leads

DeepSeek V4 Flash: 47.9 (#59), GPT-4o: 24.8 (#328)

Coding benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
WeirdML	63%	25.1%
LMArena Coding	1457	1297
SWE-bench Verified	—	31%
FrontierCode	18.8%	—
SWE-bench Verified (bash only)	—	21.6%
Aider Polyglot	—	45.3%
LMArena WebDev	1582	—
SciCode	49.9%	—
GSO	—	0%
BigCodeBench Instruct	—	51.1%
LiveBench Coding	—	51.4%
BigCodeBench Complete	—	61.1%
CadEval	—	26%
ALE-Bench	1,306	—
HumanEval+	—	87.2%
MBPP+	—	72.2%

Agentic & Tool Use Not comparable

DeepSeek V4 Flash: —, GPT-4o: 21.0 (#141)

Agentic & Tool Use benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
GDPval	—	9.9%
TheAgentCompany	—	8.6%
Cybench	—	12.5%
BALROG	—	32.3%
LMArena Search	—	1006
METR Time Horizons	—	40.8%

Reasoning DeepSeek V4 Flash leads

DeepSeek V4 Flash: 53.7 (#30), GPT-4o: 9.4 (#343)

Reasoning benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
ARC-AGI-2	61.4%	0%
SimpleBench	61.1%	17.8%
ARC-AGI-1	89%	4.5%
CritPt	16.6%	0%
Chess Puzzles	33%	13%
LMArena Hard Prompts	1444	1281
DTBench	90.9%	64.5%
LMCA	41.7%	16.6%
Epoch Capabilities Index	154.49	128.97
Kagi LLM Benchmark	52.2%	—
NYT Connections (extended)	89.6%	—
EnigmaEval	—	0.8%
LiveBench Reasoning	—	55.8%
Mystery Game Puzzles	34%	—
LiveBench Data Analysis	—	60.9%
ForecastBench	—	57.7
LiveBench	—	55.3%

Math DeepSeek V4 Flash leads

DeepSeek V4 Flash: 60.3 (#37), GPT-4o: 10.6 (#312)

Math benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
FrontierMath (Tiers 1-3)	57.5%	0.4%
OTIS Mock AIME 2024-2025	94.4%	6.4%
LMArena Math	1427	1285
FrontierMath Tier 4	24.4%	—
MathArena Final-Answer Competitions	76.5%	—
ProofBench	56%	—
Omni-MATH	—	29.3%
LiveBench Math	—	49.5%
MATH Level 5	—	53.3%
FrontierMath (Feb 2025 set)	—	0.3%

Knowledge DeepSeek V4 Flash leads

DeepSeek V4 Flash: 55.4 (#48), GPT-4o: 28.8 (#242)

Knowledge benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
GPQA Diamond	91%	49.2%
SimpleQA Verified	33.6%	26%
LMArena Expert	1441	1250
Humanity's Last Exam	—	2.7%
MMLU-Pro	—	71.3%
Confabulations	—	15.3%
Vectara Hallucination Rate	—	9.6%
GPQA (HELM)	—	52%
MMLU	—	88.1%

Multimodal Not comparable

DeepSeek V4 Flash: —, GPT-4o: 34.5 (#91)

Multimodal benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
LMArena Vision	—	1137
Video-MME	—	71.9%
GeoBench	—	71%
VPCT	—	40%
ScienceQA	—	88.5%

Multilingual DeepSeek V4 Flash leads

DeepSeek V4 Flash: 53.0 (#72), GPT-4o: 43.2 (#186)

Multilingual benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
LMArena Non-English	1420	1283
LMArena Chinese	1468	1277
LMArena French	1439	1304
LMArena German	1418	1282
LMArena Japanese	1406	1257
LMArena Korean	1384	1234
LMArena Russian	1428	1286
LMArena Spanish	1436	1292

Instruction Following DeepSeek V4 Flash leads

DeepSeek V4 Flash: 74.9 (#81), GPT-4o: 66.6 (#207)

Instruction Following benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
LMArena Instruction Following	1421	1278
LiveBench Instruction Following	—	68.6%
IFEval	—	81.7%

Long Context DeepSeek V4 Flash leads

DeepSeek V4 Flash: 43.8 (#85), GPT-4o: 39.4 (#179)

Long Context benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
LMArena Longer Query	1434	1289
Fiction.LiveBench	—	66.7%

Writing & Preference DeepSeek V4 Flash leads

DeepSeek V4 Flash: 63.8 (#61), GPT-4o: 52.6 (#166)

Writing & Preference benchmarks
Benchmark	DeepSeek V4 Flash	GPT-4o
LMArena Text	1432	1300
LMArena Creative Writing	1403	1292
LMArena Multi-Turn	1449	1302
Short-Story Creative Writing	—	81.8%
EQ-Bench Creative Writing	1559	—
WildBench	—	82.8%
LiveBench Language	—	47.6%

Frequently asked questions

Is DeepSeek V4 Flash better than GPT-4o?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 28.6 on the Noometry Index.

Which is cheaper, DeepSeek V4 Flash or GPT-4o?

DeepSeek V4 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; GPT-4o lists at $2.50 and $10.

Is DeepSeek V4 Flash or GPT-4o better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.9 versus 24.8 in the Noometry coding category.

Which has the bigger context window?

DeepSeek V4 Flash does, with 1M tokens against 128K.

How many benchmarks do DeepSeek V4 Flash and GPT-4o share?

30 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and GPT-4o has 72.