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Model comparison

Gemini 3.5 Flash-Lite vs o3

Data verified

Head-to-head evidence from 10 shared benchmark results across 4 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

N/A
No comparison
o3
OpenAI
47.89/100
0 category wins0 category wins

Public leaderboard positions: Gemini 3.5 Flash-Lite unranked (Not scored); o3 #131 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemini 3.5 Flash-Lite and o3 share 10 comparable benchmark results. 0 of 8 categories are comparable. 11 results are unique to Gemini 3.5 Flash-Lite; 6 to o3.

Updated July 21, 2026
Shared results
10
Gemini 3.5 Flash-Lite only
11
o3 only
6
Comparable categories
0 / 8

Benchmark data for Gemini 3.5 Flash-Lite and o3 is coming soon on BenchLM.

Confidence note. This is a partial-evidence comparison with 10 shared benchmark results across 4 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.

o3 is priced at $2.00 input / $8.00 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 has the larger context window at 1M, compared with 200K for o3.

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 o3
CategoryGemini 3.5 Flash-LiteΔo3
AgenticGemini 3.5 Flash-Lite63.4MarginNo overlapo3Not measured
CodingGemini 3.5 Flash-Lite54.2MarginNo overlapo3Not measured
ReasoningGemini 3.5 Flash-Lite72.2MarginNo overlapo3Not measured
MathGemini 3.5 Flash-LiteNot measuredMarginNo overlapo314.5

Operational comparison

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

MetricGemini 3.5 Flash-Liteo3Comparison
Input / output priceUSD per 1M tokensGemini 3.5 Flash-Lite$0.3 input / $2.5 outputo3$2 input / $8 outputGemini 3.5 Flash-Lite has the lower combined listed price.
Generation speedtokens per secondGemini 3.5 Flash-LiteNot availableo3118 tok/sA complete speed comparison is not available.
First-answer latencyseconds to first tokenGemini 3.5 Flash-LiteNot availableo35.38 sA complete latency comparison is not available.
Context windowmaximum listed tokensGemini 3.5 Flash-Lite1Mo3200KGemini 3.5 Flash-Lite lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGemini 3.5 Flash-Liteo3Result
Terminal-Bench 2.0Source 54%—Not comparable
OSWorld-VerifiedSource 74%—Not comparable
GDPval-AASource 1140—Not comparable
AA Agentic IndexSource 26.8%—Not comparable
GDPval-AASource 32.0%—Not comparable
AA BriefcaseSource 634—Not comparable
AA Tau3 BankingSource 16.5%—Not comparable
τ²-bench resultsSource —80.7%Not comparable
Coding
BenchmarkGemini 3.5 Flash-Liteo3Result
Terminal-Bench 2.0Source 54.0%—Not comparable
SWE-bench ProSource 54.2%—Not comparable
AA Coding IndexSource 49.3%—Not comparable
AA-SciCodeSource 40.9%41.0%o3 leads
Reasoning
BenchmarkGemini 3.5 Flash-Liteo3Result
MRCRv2Source 72.2%—Not comparable
AA-LCRSource 62.0%69.3%o3 leads
CritPtSource 0.0%1.1%o3 leads
Knowledge
BenchmarkGemini 3.5 Flash-Liteo3Result
Artificial Analysis Intelligence IndexSource 36.5%30.4%Gemini 3.5 Flash-Lite leads
AA-GPQA DiamondSource 83.8%82.7%Gemini 3.5 Flash-Lite leads
AA-HLESource 17.5%20.0%o3 leads
AA-Omniscience IndexSource 6.9%-15.3%Gemini 3.5 Flash-Lite leads
AA-Omniscience AccuracySource 30.3%38.4%o3 leads
AA-Omniscience Hallucination RateSource 33.5%87.1%Gemini 3.5 Flash-Lite leads
Math
BenchmarkGemini 3.5 Flash-Liteo3Result
AA MATH-500Source —99.2%Not comparable
FrontierMath v2 (Tiers 1-3)Source —18.685%Not comparable
FrontierMath v2 (Tier 4)Source —2.083%Not comparable
Multimodal
BenchmarkGemini 3.5 Flash-Liteo3Result
AA-MMMU-ProSource 79.0%70.1%Gemini 3.5 Flash-Lite leads
Design Arena WebsiteSource —1067Not comparable
Inst. Following
BenchmarkGemini 3.5 Flash-Liteo3Result
AA-IFBenchSource —71.4%Not comparable
Frequently Asked Questions (3)

Can I compare Gemini 3.5 Flash-Lite and o3 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for Gemini 3.5 Flash-Lite and o3 today?

Gemini 3.5 Flash-Lite: $0.30 input / $2.50 output per 1M tokens o3: $2.00 input / $8.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

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Last updated: July 21, 2026

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