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Model comparison

DeepSeek V4 Pro (Max) vs Gemini 3.5 Flash-Lite

Data verified

Head-to-head evidence from 18 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

N/A
No comparison
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2 category wins0 category wins

Evidence parity. DeepSeek V4 Pro (Max) and Gemini 3.5 Flash-Lite share 18 comparable benchmark results. 2 of 8 categories are comparable. 30 results are unique to DeepSeek V4 Pro (Max); 3 to Gemini 3.5 Flash-Lite.

Updated July 21, 2026
Shared results
18
DeepSeek V4 Pro (Max) only
30
Gemini 3.5 Flash-Lite only
3
Comparable categories
2 / 8

Treat this as a split decision. DeepSeek V4 Pro (Max) makes more sense if coding is the priority or you want the cheaper token bill; Gemini 3.5 Flash-Lite is the better fit if its strengths line up with your actual workload.

Confidence note. This is a partial-evidence comparison with 18 shared benchmark results across 4 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

DeepSeek V4 Pro (Max) and Gemini 3.5 Flash-Lite finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.

Gemini 3.5 Flash-Lite is also the more expensive model on tokens at $0.30 input / $2.50 output per 1M tokens, versus $0.43 input / $0.87 output per 1M tokens for DeepSeek V4 Pro (Max). That is roughly 2.9x on output cost alone.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for DeepSeek V4 Pro (Max) and Gemini 3.5 Flash-Lite
CategoryDeepSeek V4 Pro (Max)ΔGemini 3.5 Flash-Lite
CodingDeepSeek V4 Pro (Max)70.9Margin← 16.7Gemini 3.5 Flash-Lite54.2
AgenticDeepSeek V4 Pro (Max)74.5Margin← 11.1Gemini 3.5 Flash-Lite63.4
ReasoningDeepSeek V4 Pro (Max)Not measuredMarginNo overlapGemini 3.5 Flash-Lite72.2
KnowledgeDeepSeek V4 Pro (Max)60.1MarginNo overlapGemini 3.5 Flash-LiteNot measured
MathDeepSeek V4 Pro (Max)95.2MarginNo overlapGemini 3.5 Flash-LiteNot measured

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · DeepSeek V4 Pro (Max)B · Gemini 3.5 Flash-Lite

  1. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 67.9%B 54%
    Winner: DeepSeek V4 Pro (Max)Δ 13.9
    Terminal-Bench 2.0: DeepSeek V4 Pro (Max) scored 67.9%; Gemini 3.5 Flash-Lite scored 54%. DeepSeek V4 Pro (Max) wins this benchmark.

  2. SWE-bench Pro

    Coding
    Source ↗
    A 55.4%B 54.2%
    Winner: DeepSeek V4 Pro (Max)Δ 1.2
    SWE-bench Pro: DeepSeek V4 Pro (Max) scored 55.4%; Gemini 3.5 Flash-Lite scored 54.2%. DeepSeek V4 Pro (Max) wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteComparison
Input / output priceUSD per 1M tokensDeepSeek V4 Pro (Max)$0.435 input / $0.87 outputGemini 3.5 Flash-Lite$0.3 input / $2.5 outputDeepSeek V4 Pro (Max) has the lower combined listed price.
Generation speedtokens per secondDeepSeek V4 Pro (Max)Not availableGemini 3.5 Flash-LiteNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenDeepSeek V4 Pro (Max)Not availableGemini 3.5 Flash-LiteNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensDeepSeek V4 Pro (Max)1MGemini 3.5 Flash-Lite1MListed context windows are equal.

Benchmark Deep Dive

AgenticDeepSeek V4 Pro (Max) wins
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
Terminal-Bench 2.0Source 67.9%54%DeepSeek V4 Pro (Max) leads
BrowseCompSource 83.4%—Not comparable
HLE w/ toolsSource 48.2%—Not comparable
MCP AtlasSource 73.6%—Not comparable
GDPval-AASource 13071140DeepSeek V4 Pro (Max) leads
ToolathlonSource 51.8%—Not comparable
AA Agentic IndexSource 36.4%26.8%DeepSeek V4 Pro (Max) leads
APEX-Agents-AASource 24.3%—Not comparable
τ²-bench resultsSource 96.2%—Not comparable
GDPval-AASource 40.4%32.0%DeepSeek V4 Pro (Max) leads
AA BriefcaseSource 932634DeepSeek V4 Pro (Max) leads
AA EnterpriseOps-GymSource 40.4%—Not comparable
AA Harvey LABSource 84.4%—Not comparable
AA ITBenchSource 38.3%—Not comparable
AA Tau3 BankingSource 25.8%16.5%DeepSeek V4 Pro (Max) leads
terminalBenchHardSource 46.2%—Not comparable
aaTerminalBench21Source 64%—Not comparable
OSWorld-VerifiedSource —74%Not comparable
CodingDeepSeek V4 Pro (Max) wins
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
CodeforcesSource 3206.0—Not comparable
SWE-bench VerifiedSource 80.6%—Not comparable
SWE-bench ProSource 55.4%54.2%DeepSeek V4 Pro (Max) leads
SWE MultilingualSource 76.2%—Not comparable
Terminal-Bench 2.0Source 67.9%54.0%DeepSeek V4 Pro (Max) leads
Vibe Code BenchSource 49.93%—Not comparable
AA Coding IndexSource 59.4%49.3%DeepSeek V4 Pro (Max) leads
AA-SciCodeSource 50.0%40.9%DeepSeek V4 Pro (Max) leads
Reasoning
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
MRCR 1MSource 83.5%—Not comparable
CorpusQA 1MSource 62.0%—Not comparable
AA-LCRSource 66.3%62.0%DeepSeek V4 Pro (Max) leads
CritPtSource 12.9%0.0%DeepSeek V4 Pro (Max) leads
MRCRv2Source —72.2%Not comparable
Knowledge
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
MMLU-ProSource 87.5%—Not comparable
SimpleQASource 57.9%—Not comparable
Chinese-SimpleQASource 84.4%—Not comparable
GPQASource 90.1%—Not comparable
GPQA-DSource 90.1%—Not comparable
HLESource 37.7%—Not comparable
Artificial Analysis Intelligence IndexSource 44.3%36.5%DeepSeek V4 Pro (Max) leads
AA-GPQA DiamondSource 88.8%83.8%DeepSeek V4 Pro (Max) leads
AA-HLESource 35.9%17.5%DeepSeek V4 Pro (Max) leads
AA-Omniscience IndexSource -10.0%6.9%Gemini 3.5 Flash-Lite leads
AA-Omniscience AccuracySource 43.3%30.3%DeepSeek V4 Pro (Max) leads
AA-Omniscience Hallucination RateSource 94.0%33.5%Gemini 3.5 Flash-Lite leads
AA Openness IndexSource 50.0%—Not comparable
Math
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
HMMT Feb 2026Source 95.2%—Not comparable
IMOAnswerBenchSource 89.8%—Not comparable
ApexSource 38.3%—Not comparable
Apex ShortlistSource 90.2%—Not comparable
Multimodal
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
Design Arena WebsiteSource 1264—Not comparable
AA-MMMU-ProSource —79.0%Not comparable
Inst. Following
BenchmarkDeepSeek V4 Pro (Max)Gemini 3.5 Flash-LiteResult
AA-IFBenchSource 76.5%—Not comparable
Frequently Asked Questions (3)

Which is better, DeepSeek V4 Pro (Max) or Gemini 3.5 Flash-Lite?

DeepSeek V4 Pro (Max) and Gemini 3.5 Flash-Lite are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.

Which is better for coding, DeepSeek V4 Pro (Max) or Gemini 3.5 Flash-Lite?

DeepSeek V4 Pro (Max) has the edge for coding in this comparison, averaging 70.9 versus 54.2. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, DeepSeek V4 Pro (Max) or Gemini 3.5 Flash-Lite?

DeepSeek V4 Pro (Max) has the edge for agentic tasks in this comparison, averaging 74.5 versus 63.4. Inside this category, AA Briefcase is the benchmark that creates the most daylight between them.

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