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  3. Gemini 3 Flash vs GPT-4o mini

Pairwise benchmark snapshot · Aug 1, 2026

Gemini 3 Flash vs GPT-4o mini benchmark

In this head-to-head showdown, Gemini 3 Flash delivers higher overall intelligence and human-preferred responses (Elo 1,495 vs 1,272), while Gemini 3 Flash leads in SWE-bench software engineering benchmarks (75.8%), while Gemini 3 Flash is more budget-friendly at $0.6/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Gemini 3 Flash holds the advantage over GPT-4o mini in overall benchmark performance and human evaluation rankings. Choose Gemini 3 Flash for demanding workloads, or review the breakdown below to compare coding and pricing metrics.
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Verified Head-to-Head Advantage Breakdown

7 direct benchmark disciplines evaluated across capability, speed, and cost

Gemini 3 Flash (7)GPT-4o mini (0)
Gemini 3 Flash
7 of 7 Wins
✓Preference Elo✓LiveBench✓SWE-bench✓GPQA Diamond✓Time to first token✓Output speed✓Context window
GPT-4o mini
0 of 7 Wins
Competitive baseline across remaining benchmarks
Google
Leads 7 of 7 metrics
Gemini 3 Flash

Fast Google frontier-adjacent model. Near-top official SWE-bench at a fraction of Opus price.

Flash TurboElo 1,495$0.6/1M out
OpenAI
GPT-4o mini

Legacy small OpenAI model. Useful as a cheap baseline.

4o MiniElo 1,272$0.6/1M out

Gemini 3 Series Lineage & Sibling Variants

5 models

Currently comparing Gemini 3 Flash vs GPT-4o mini. Alternative family tiers available.

Active: Gemini 3 Flash
Gemini 3 Pro$5Gemini 3.6 Pro$5Gemini 3.6 Flash$3.75Gemini 3.7 Flash$3.75
Top Rival Showdowns for Gemini 3 Flash
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Grok 4.6vs DeepSeek V4 Provs Qwen 3 Max
Preference LeaderGemini 3 Flash Wins

Gemini 3 Flash

Δ 223 Arena Elo pts

Throughput LeaderGemini 3 Flash Wins

Gemini 3 Flash

190 tok/s

Value per Dollar LeaderGemini 3 Flash Wins

Gemini 3 Flash

$0.6 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top Western standard models with China's leading frontier rival across 6 skill dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
Percentile 0–100
Head-to-Head Comparison

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Gemini 3 Flash (8)vsGPT-4o mini (0)
Gemini 3 Flash: 8W (100%)Overall: Gemini 3 FlashGPT-4o mini: 0W (0%)
← Gemini 3 Flash2 tiesGPT-4o mini →
🏆Gemini 3 Flash(5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
Gemini 3 FlashvsGPT-4o mini
Preference Elo
1,495vs1,272+223
Coding Elo
1,510vs—
SWE-bench
75.8%vs41.2%+34.6%
LiveBench
66.8%vs48.1%+18.7%
GPQA Diamond
78.4%vs60.1%+18.3%
Gemini 3 Flash: 5WGPT-4o mini: 0W
🏆Gemini 3 Flash(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Gemini 3 FlashvsGPT-4o mini
Output speed
190 tok/svs160 tok/s+30 tok/s
Time to first token
95 msvs130 ms+35 ms
Gemini 3 Flash: 2WGPT-4o mini: 0W
🏆Gemini 3 Flash(1/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Gemini 3 FlashvsGPT-4o mini
Output price
$0.6/1Mvs$0.6/1M
Input price
$0.15/1Mvs$0.15/1M
Context window
1Mvs128k+872k
Gemini 3 Flash: 1WGPT-4o mini: 0W

Side-by-Side Benchmark Matrix

Preference Elo+223
Gemini 3 Flash1,495
seed-bootstrap · Aug 1, 2026
GPT-4o mini1,272
seed-bootstrap · Aug 1, 2026
Coding Elo
Gemini 3 Flash1,510
seed-bootstrap · Aug 1, 2026
GPT-4o mini—
LiveBench+18.7%
Gemini 3 Flash66.8%
seed-bootstrap · Aug 1, 2026
GPT-4o mini48.1%
seed-bootstrap · Aug 1, 2026
SWE-bench+34.6%
Gemini 3 Flash75.8%
seed-bootstrap · Aug 1, 2026
GPT-4o mini41.2%
seed-bootstrap · Aug 1, 2026
GPQA Diamond+18.3%
Gemini 3 Flash78.4%
seed-bootstrap · Aug 1, 2026
GPT-4o mini60.1%
seed-bootstrap · Aug 1, 2026
Time to first token+35 ms
Gemini 3 Flash95 ms
seed-bootstrap · Aug 1, 2026
GPT-4o mini130 ms
seed-bootstrap · Aug 1, 2026
Output speed+30 tok/s
Gemini 3 Flash190 tok/s
seed-bootstrap · Aug 1, 2026
GPT-4o mini160 tok/s
seed-bootstrap · Aug 1, 2026
Input price
Gemini 3 Flash$0.15/1M
seed-bootstrap · Aug 1, 2026
GPT-4o mini$0.15/1M
seed-bootstrap · Aug 1, 2026
Output price
Gemini 3 Flash$0.6/1M
seed-bootstrap · Aug 1, 2026
GPT-4o mini$0.6/1M
seed-bootstrap · Aug 1, 2026
Context window+872k
Gemini 3 Flash1M
seed-bootstrap · Aug 1, 2026
GPT-4o mini128k
seed-bootstrap · Aug 1, 2026
BenchmarkGemini 3 FlashGPT-4o miniAdvantage Delta
Preference Elo
1,495
seed-bootstrap · Aug 1, 2026
1,272
seed-bootstrap · Aug 1, 2026
+223
Coding Elo
1,510
seed-bootstrap · Aug 1, 2026
——
LiveBench
66.8%
seed-bootstrap · Aug 1, 2026
48.1%
seed-bootstrap · Aug 1, 2026
+18.7%
SWE-bench
75.8%
seed-bootstrap · Aug 1, 2026
41.2%
seed-bootstrap · Aug 1, 2026
+34.6%
GPQA Diamond
78.4%
seed-bootstrap · Aug 1, 2026
60.1%
seed-bootstrap · Aug 1, 2026
+18.3%
Time to first token
95 ms
seed-bootstrap · Aug 1, 2026
130 ms
seed-bootstrap · Aug 1, 2026
+35 ms
Output speed
190 tok/s
seed-bootstrap · Aug 1, 2026
160 tok/s
seed-bootstrap · Aug 1, 2026
+30 tok/s
Input price
$0.15/1M
seed-bootstrap · Aug 1, 2026
$0.15/1M
seed-bootstrap · Aug 1, 2026
—
Output price
$0.6/1M
seed-bootstrap · Aug 1, 2026
$0.6/1M
seed-bootstrap · Aug 1, 2026
—
Context window
1M
seed-bootstrap · Aug 1, 2026
128k
seed-bootstrap · Aug 1, 2026
+872k
Interactive Simulator (USD)

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Gemini 3 Flash$14.25 / mo
In: $5.25Out: $9
GPT-4o mini$14.25 / mo
In: $5.25Out: $9

Key Selection Recommendations

  • 1
    Gemini 3 Flash:Pick Gemini 3 Flash when repo-level coding accuracy is the constraint.
  • 2
    Gemini 3 Flash:Pick Gemini 3 Flash when time-to-first-token matters more than peak Elo.
  • 3
    Gemini 3 Flash:Pick Gemini 3 Flash for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsGemini 3 Flash

Higher SWE-bench (75.8%).

High-volume chatGemini 3 Flash

Lower output list price ($0.6/1M).

Voice / low-latency UIGemini 3 Flash

Lower TTFT (95 ms).

Long-document RAGGemini 3 Flash

Larger window (1M).

Screenshots / visionGemini 3 Flash

Both accept images. Defaulting to the higher-Elo side (Gemini 3 Flash).

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsGemini 3 FlashHigher SWE-bench (75.8%).
High-volume chatGemini 3 FlashLower output list price ($0.6/1M).
Voice / low-latency UIGemini 3 FlashLower TTFT (95 ms).
Long-document RAGGemini 3 FlashLarger window (1M).
Screenshots / visionGemini 3 FlashBoth accept images. Defaulting to the higher-Elo side (Gemini 3 Flash).

Related Editorial Dispatches & Benchmark Notes

View all news
launchMar 16, 2026

Gemini 3 Flash: near-top official SWE-bench at a fraction of Opus

March 2026 speed SKU. Still a useful cheap-coding compare even after 3.6/3.7 Flash.

Community Sentiment

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
Google

Gemini 3 Flash

Elo 1,495
SWE-bench75.8%
Speed (tok/s)190 tok/s
Input / 1M Tokens$0.15/1M
Output / 1M Tokens$0.6/1M
OpenAI

GPT-4o mini

Elo 1,272
SWE-bench41.2%
Speed (tok/s)160 tok/s
Input / 1M Tokens$0.15/1M
Output / 1M Tokens$0.6/1M

Frequently Asked Questions

Which is better overall, Gemini 3 Flash or GPT-4o mini?
Gemini 3 Flash has the higher preference Elo in our latest snapshot (1,495). “Better” still depends on coding, price, and latency — see the table.
Which is better at coding, Gemini 3 Flash or GPT-4o mini?
Gemini 3 Flash leads SWE-bench at 75.8% vs 41.2%. SWE-bench is one harness, not your repo.
Which is cheaper to run in production?
Gemini 3 Flash output tokens are $0.6/1M versus $0.6/1M. Input prices and retry rates still move the real bill.
Which is faster, Gemini 3 Flash or GPT-4o mini?
Gemini 3 Flash has the lower time-to-first-token (95 ms vs 130 ms). Tokens/sec is a separate column if you care about long completions.
Which has the larger context window?
Gemini 3 Flash accepts 1M tokens versus 128k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Gemini 3 Flash and GPT-4o mini Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Mar 16, 2026

    Gemini 3 Flash: near-top official SWE-bench at a fraction of Opus

Similar Head-to-Head Comparisons

All Gemini 3 Flash matchups →|All GPT-4o mini matchups →
Gemini 3 Flash vs Gemini 2.5 Flash (previous gemini-flash)Gemini 3 Flash vs Gemini 3.6 Flash (next gemini-flash)GPT-4o mini vs OpenAI o1-mini (next gpt-mini)Gemini 2.0 Flash Thinking vs Gemini 3 FlashGemini 3.7 Flash vs Gemini 3 FlashGPT-4.5 Orion vs Gemini 3 Flash