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Model comparison

Gemini 3.5 Flash-Lite vs GPT-5.4 mini

Data verified

Head-to-head evidence from 16 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

N/A
No comparison
56.77/100
0 category wins1 category wins

Public leaderboard positions: Gemini 3.5 Flash-Lite unranked (Not scored); GPT-5.4 mini #75 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemini 3.5 Flash-Lite and GPT-5.4 mini share 16 comparable benchmark results. 1 of 8 categories are comparable. 5 results are unique to Gemini 3.5 Flash-Lite; 14 to GPT-5.4 mini.

Updated July 21, 2026
Shared results
16
Gemini 3.5 Flash-Lite only
5
GPT-5.4 mini only
14
Comparable categories
1 / 8

Treat this as a split decision. Gemini 3.5 Flash-Lite makes more sense if you want the cheaper token bill or you need the larger 1M context window; GPT-5.4 mini is the better fit if agentic is the priority.

Confidence note. This is a partial-evidence comparison with 16 shared benchmark results across 5 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Gemini 3.5 Flash-Lite and GPT-5.4 mini 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.

GPT-5.4 mini is also the more expensive model on tokens at $0.75 input / $4.50 output per 1M tokens, versus $0.30 input / $2.50 output per 1M tokens for Gemini 3.5 Flash-Lite. Gemini 3.5 Flash-Lite gives you the larger context window at 1M, compared with 400K for GPT-5.4 mini.

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 Gemini 3.5 Flash-Lite and GPT-5.4 mini
CategoryGemini 3.5 Flash-LiteΔGPT-5.4 mini
AgenticGemini 3.5 Flash-Lite63.4Margin→ 2.3GPT-5.4 mini65.7
CodingGemini 3.5 Flash-Lite54.2MarginNo overlapGPT-5.4 miniNot measured
ReasoningGemini 3.5 Flash-Lite72.2MarginNo overlapGPT-5.4 miniNot measured
KnowledgeGemini 3.5 Flash-LiteNot measuredMarginNo overlapGPT-5.4 mini47.8
MathGemini 3.5 Flash-LiteNot measuredMarginNo overlapGPT-5.4 mini21.7
MultimodalGemini 3.5 Flash-LiteNot measuredMarginNo overlapGPT-5.4 mini76.6

Decisive benchmark drivers

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

More
A · Gemini 3.5 Flash-LiteB · GPT-5.4 mini

  1. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 54%B 60%
    Winner: GPT-5.4 miniΔ 6
    Terminal-Bench 2.0: Gemini 3.5 Flash-Lite scored 54%; GPT-5.4 mini scored 60%. GPT-5.4 mini wins this benchmark.

  2. OSWorld-Verified

    Agentic
    Source ↗
    A 74%B 72.1%
    Winner: Gemini 3.5 Flash-LiteΔ 1.9
    OSWorld-Verified: Gemini 3.5 Flash-Lite scored 74%; GPT-5.4 mini scored 72.1%. Gemini 3.5 Flash-Lite wins this benchmark.

Operational comparison

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

MetricGemini 3.5 Flash-LiteGPT-5.4 miniComparison
Input / output priceUSD per 1M tokensGemini 3.5 Flash-Lite$0.3 input / $2.5 outputGPT-5.4 mini$0.75 input / $4.5 outputGemini 3.5 Flash-Lite has the lower combined listed price.
Generation speedtokens per secondGemini 3.5 Flash-LiteNot availableGPT-5.4 mini201 tok/sA complete speed comparison is not available.
First-answer latencyseconds to first tokenGemini 3.5 Flash-LiteNot availableGPT-5.4 mini3.85 sA complete latency comparison is not available.
Context windowmaximum listed tokensGemini 3.5 Flash-Lite1MGPT-5.4 mini400KGemini 3.5 Flash-Lite lists the larger context window.

Benchmark Deep Dive

AgenticGPT-5.4 mini wins
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
Terminal-Bench 2.0Source 54%60%GPT-5.4 mini leads
OSWorld-VerifiedSource 74%72.1%Gemini 3.5 Flash-Lite leads
GDPval-AASource 11401171GPT-5.4 mini leads
AA Agentic IndexSource 26.8%30.2%GPT-5.4 mini leads
GDPval-AASource 32.0%33.6%GPT-5.4 mini leads
AA BriefcaseSource 634—Not comparable
AA Tau3 BankingSource 16.5%—Not comparable
MCP AtlasSource —57.7%Not comparable
ToolathlonSource —42.9%Not comparable
τ²-bench resultsSource —83.3%Not comparable
APEX-Agents-AASource —28.2%Not comparable
Coding
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
Terminal-Bench 2.0Source 54.0%—Not comparable
SWE-bench ProSource 54.2%—Not comparable
AA Coding IndexSource 49.3%56.1%GPT-5.4 mini leads
AA-SciCodeSource 40.9%49.9%GPT-5.4 mini leads
Vibe Code BenchSource —47.97%Not comparable
FrontierCode 1.1 MainSource —27.0%Not comparable
Reasoning
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
MRCRv2Source 72.2%—Not comparable
AA-LCRSource 62.0%69.3%GPT-5.4 mini leads
CritPtSource 0.0%10.0%GPT-5.4 mini leads
Knowledge
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
Artificial Analysis Intelligence IndexSource 36.5%40.0%GPT-5.4 mini leads
AA-GPQA DiamondSource 83.8%87.5%GPT-5.4 mini leads
AA-HLESource 17.5%26.6%GPT-5.4 mini leads
AA-Omniscience IndexSource 6.9%-18.7%Gemini 3.5 Flash-Lite leads
AA-Omniscience AccuracySource 30.3%37.5%GPT-5.4 mini leads
AA-Omniscience Hallucination RateSource 33.5%89.8%Gemini 3.5 Flash-Lite leads
GPQASource —88%Not comparable
HLESource —41.5%Not comparable
HLE w/o toolsSource —28.2%Not comparable
Math
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
FrontierMath v2 (Tiers 1-3)Source —28.280%Not comparable
FrontierMath v2 (Tier 4)Source —2.080%Not comparable
Multimodal
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
AA-MMMU-ProSource 79.0%73.3%Gemini 3.5 Flash-Lite leads
MMMU-ProSource —76.6%Not comparable
MMMU-Pro w/ PythonSource —78%Not comparable
Inst. Following
BenchmarkGemini 3.5 Flash-LiteGPT-5.4 miniResult
AA-IFBenchSource —73.3%Not comparable
Frequently Asked Questions (2)

Which is better, Gemini 3.5 Flash-Lite or GPT-5.4 mini?

Gemini 3.5 Flash-Lite and GPT-5.4 mini 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 agentic tasks, Gemini 3.5 Flash-Lite or GPT-5.4 mini?

GPT-5.4 mini has the edge for agentic tasks in this comparison, averaging 65.7 versus 63.4. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.

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Last updated: July 21, 2026

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