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Model comparison

Gemini 3 Flash vs o4-mini (high)

Data verified

Head-to-head evidence from 2 shared benchmark results across 1 category. Overall scores shown here use the public BenchAlign v5 ranking lane.

60.49/100
Margin
10.5pts
← winning
49.98/100
1 category wins0 category wins

Public leaderboard positions: Gemini 3 Flash #49 (Supported); o4-mini (high) #118 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemini 3 Flash and o4-mini (high) share 2 comparable benchmark results. 1 of 8 categories are comparable. 17 results are unique to Gemini 3 Flash; 0 to o4-mini (high).

Updated July 20, 2026
Shared results
2
Gemini 3 Flash only
17
o4-mini (high) only
0
Comparable categories
1 / 8

Pick Gemini 3 Flash if you want the stronger benchmark profile. o4-mini (high) only becomes the better choice if you want the stronger reasoning-first profile.

Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 1 evidence category; 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 49.98. 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 20.2. The single biggest benchmark swing on the page is FrontierMath v2 (Tiers 1-3), 35.640% to 24.828%.

o4-mini (high) 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 200K for o4-mini (high).

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 o4-mini (high)
CategoryGemini 3 FlashΔo4-mini (high)
MathGemini 3 Flash27.8Margin← 7.6o4-mini (high)20.2

Decisive benchmark drivers

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

More
A · Gemini 3 FlashB · o4-mini (high)

  1. FrontierMath v2 (Tiers 1-3)

    Math
    Source ↗
    A 35.640%B 24.828%
    Winner: Gemini 3 FlashΔ 10.8
    FrontierMath v2 (Tiers 1-3): Gemini 3 Flash scored 35.640%; o4-mini (high) scored 24.828%. Gemini 3 Flash wins this benchmark.

  2. FrontierMath v2 (Tier 4)

    Math
    Source ↗
    A 4.167%B 6.250%
    Winner: o4-mini (high)Δ 2.1
    FrontierMath v2 (Tier 4): Gemini 3 Flash scored 4.167%; o4-mini (high) scored 6.250%. o4-mini (high) wins this benchmark.

Operational comparison

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

MetricGemini 3 Flasho4-mini (high)Comparison
Input / output priceUSD per 1M tokensGemini 3 Flash$0.5 input / $3 outputo4-mini (high)Not availableA complete price comparison is not available.
Generation speedtokens per secondGemini 3 Flash159 tok/so4-mini (high)161 tok/so4-mini (high) has the higher measured throughput.
First-answer latencyseconds to first tokenGemini 3 Flash1.19 so4-mini (high)21.94 sGemini 3 Flash reaches the first token sooner.
Context windowmaximum listed tokensGemini 3 Flash1Mo4-mini (high)200KGemini 3 Flash lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGemini 3 Flasho4-mini (high)Result
Claw-EvalSource 49.2%—Not comparable
τ²-bench resultsSource 43.3%—Not comparable
Gert LabsSource 56.63%—Not comparable
JobBenchSource 11.4%—Not comparable
Coding
BenchmarkGemini 3 Flasho4-mini (high)Result
Vibe Code BenchSource 20.20%—Not comparable
AA-SciCodeSource 49.9%—Not comparable
Reasoning
BenchmarkGemini 3 Flasho4-mini (high)Result
AA-LCRSource 48.0%—Not comparable
CritPtSource 1.4%—Not comparable
Knowledge
BenchmarkGemini 3 Flasho4-mini (high)Result
Artificial Analysis Intelligence IndexSource 27.4%—Not comparable
AA-GPQA DiamondSource 81.2%—Not comparable
AA-HLESource 14.1%—Not comparable
AA-Omniscience IndexSource -3.6%—Not comparable
AA-Omniscience AccuracySource 45.5%—Not comparable
AA-Omniscience Hallucination RateSource 90.2%—Not comparable
MathGemini 3 Flash wins
BenchmarkGemini 3 Flasho4-mini (high)Result
FrontierMath v2 (Tiers 1-3)Source 35.640%24.828%Gemini 3 Flash leads
FrontierMath v2 (Tier 4)Source 4.167%6.250%o4-mini (high) leads
Multimodal
BenchmarkGemini 3 Flasho4-mini (high)Result
AA-MMMU-ProSource 78.6%—Not comparable
Design Arena WebsiteSource 1228—Not comparable
Inst. Following
BenchmarkGemini 3 Flasho4-mini (high)Result
AA-IFBenchSource 55.1%—Not comparable
Frequently Asked Questions (2)

Which is better, Gemini 3 Flash or o4-mini (high)?

Gemini 3 Flash is ahead on BenchLM's BenchAlign leaderboard, 60.49 to 49.98. The biggest single separator in this matchup is FrontierMath v2 (Tiers 1-3), where the scores are 35.640% and 24.828%.

Which is better for math, Gemini 3 Flash or o4-mini (high)?

Gemini 3 Flash has the edge for math in this comparison, averaging 27.8 versus 20.2. Inside this category, FrontierMath v2 (Tiers 1-3) is the benchmark that creates the most daylight between them.

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Last updated: July 20, 2026

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