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Model comparison

Gemini 3 Flash vs GPT-5.4 mini

Data verified

Head-to-head evidence from 15 shared benchmark results across 7 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.49/100
Margin
3.7pts
← winning
56.77/100
1 category wins0 category wins

Public leaderboard positions: Gemini 3 Flash #49 (Supported); GPT-5.4 mini #75 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemini 3 Flash and GPT-5.4 mini share 15 comparable benchmark results. 1 of 8 categories are comparable. 4 results are unique to Gemini 3 Flash; 15 to GPT-5.4 mini.

Updated July 23, 2026
Shared results
15
Gemini 3 Flash only
4
GPT-5.4 mini only
15
Comparable categories
1 / 8

Pick Gemini 3 Flash if you want the stronger benchmark profile. GPT-5.4 mini only becomes the better choice if you want the stronger reasoning-first profile.

Confidence note. This is a partial-evidence comparison with 15 shared benchmark results across 7 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 Flash is clearly ahead on the BenchAlign aggregate, 60.49 to 56.77. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 3 Flash's sharpest advantage is in mathematics, where it averages 27.8 against 21.7. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 35.640% to 28.280%.

GPT-5.4 mini is also the more expensive model on tokens at $0.75 input / $4.50 output per 1M tokens, versus $0.50 input / $3.00 output per 1M tokens for Gemini 3 Flash. GPT-5.4 mini is the reasoning model in the pair, while Gemini 3 Flash is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. Gemini 3 Flash 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 Flash and GPT-5.4 mini
CategoryGemini 3 FlashΔGPT-5.4 mini
MathGemini 3 Flash27.8Margin← 6.1GPT-5.4 mini21.7
AgenticGemini 3 FlashNot measuredMarginNo overlapGPT-5.4 mini65.7
KnowledgeGemini 3 FlashNot measuredMarginNo overlapGPT-5.4 mini47.8
MultimodalGemini 3 FlashNot 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 FlashB · GPT-5.4 mini

  1. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 35.640%B 28.280%
    Winner: Gemini 3 FlashΔ 7.4
    FrontierMath v2 (Tiers 1-3): Gemini 3 Flash scored 35.640%; GPT-5.4 mini scored 28.280%. Gemini 3 Flash wins this benchmark.

  2. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 4.167%B 2.080%
    Winner: Gemini 3 FlashΔ 2.1
    FrontierMath v2 (Tier 4): Gemini 3 Flash scored 4.167%; GPT-5.4 mini scored 2.080%. Gemini 3 Flash wins this benchmark.

Operational comparison

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

MetricGemini 3 FlashGPT-5.4 miniComparison
Input / output priceUSD per 1M tokensGemini 3 Flash$0.5 input / $3 outputGPT-5.4 mini$0.75 input / $4.5 outputGemini 3 Flash has the lower combined listed price.
Generation speedtokens per secondGemini 3 Flash159 tok/sGPT-5.4 mini201 tok/sGPT-5.4 mini has the higher measured throughput.
First-answer latencyseconds to first tokenGemini 3 Flash1.19 sGPT-5.4 mini3.85 sGemini 3 Flash reaches the first token sooner.
Context windowmaximum listed tokensGemini 3 Flash1MGPT-5.4 mini400KGemini 3 Flash lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGemini 3 FlashGPT-5.4 miniResult
Claw-EvalSource 49.2%—Not comparable
τ²-bench resultsSource 43.3%83.3%GPT-5.4 mini leads
Gert LabsSource 56.63%—Not comparable
JobBenchSource 11.4%—Not comparable
Terminal-Bench 2.0Source —60%Not comparable
OSWorld-VerifiedSource —72.1%Not comparable
MCP AtlasSource —57.7%Not comparable
ToolathlonSource —42.9%Not comparable
AA Agentic IndexSource —30.2%Not comparable
APEX-Agents-AASource —28.2%Not comparable
GDPval-AASource —33.6%Not comparable
GDPval-AASource —1171Not comparable
Coding
BenchmarkGemini 3 FlashGPT-5.4 miniResult
Vibe Code BenchSource 20.20%47.97%GPT-5.4 mini leads
AA-SciCodeSource 49.9%49.9%Tie
AA Coding IndexSource —56.1%Not comparable
FrontierCode 1.1 MainSource —27.0%Not comparable
Reasoning
BenchmarkGemini 3 FlashGPT-5.4 miniResult
AA-LCRSource 48.0%69.3%GPT-5.4 mini leads
CritPtSource 1.4%10.0%GPT-5.4 mini leads
Knowledge
BenchmarkGemini 3 FlashGPT-5.4 miniResult
Artificial Analysis Intelligence IndexSource 27.4%40.0%GPT-5.4 mini leads
AA-GPQA DiamondSource 81.2%87.5%GPT-5.4 mini leads
AA-HLESource 14.1%26.6%GPT-5.4 mini leads
AA-Omniscience IndexSource -3.6%-18.7%Gemini 3 Flash leads
AA-Omniscience AccuracySource 45.5%37.5%Gemini 3 Flash leads
AA-Omniscience Hallucination RateSource 90.2%89.8%GPT-5.4 mini leads
GPQASource —88%Not comparable
HLESource —41.5%Not comparable
HLE w/o toolsSource —28.2%Not comparable
MathGemini 3 Flash wins
BenchmarkGemini 3 FlashGPT-5.4 miniResult
FrontierMath v2 (Tiers 1-3)Source 35.640%28.280%Gemini 3 Flash leads
FrontierMath v2 (Tier 4)Source 4.167%2.080%Gemini 3 Flash leads
Multimodal
BenchmarkGemini 3 FlashGPT-5.4 miniResult
AA-MMMU-ProSource 78.6%73.3%Gemini 3 Flash leads
Design Arena WebsiteSource 1226—Not comparable
MMMU-ProSource —76.6%Not comparable
MMMU-Pro w/ PythonSource —78%Not comparable
Inst. Following
BenchmarkGemini 3 FlashGPT-5.4 miniResult
AA-IFBenchSource 55.1%73.3%GPT-5.4 mini leads
Frequently Asked Questions (2)

Which is better, Gemini 3 Flash or GPT-5.4 mini?

Gemini 3 Flash is ahead on BenchLM's BenchAlign leaderboard, 60.49 to 56.77. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 35.640% and 28.280%.

Which is better for math, Gemini 3 Flash or GPT-5.4 mini?

Gemini 3 Flash has the edge for math in this comparison, averaging 27.8 versus 21.7. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.

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