Model comparison
Gemini 3.1 Pro vs Gemini 3 Pro
Head-to-head evidence from 21 shared benchmark results across 8 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemini 3.1 Pro #83 (Estimated); Gemini 3 Pro #19 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemini 3.1 Pro and Gemini 3 Pro share 21 comparable benchmark results. 3 of 8 categories are comparable. 26 results are unique to Gemini 3.1 Pro; 6 to Gemini 3 Pro.
Updated July 20, 2026- Shared results
- 21
- Gemini 3.1 Pro only
- 26
- Gemini 3 Pro only
- 6
- Comparable categories
- 3 / 8
Pick Gemini 3 Pro if you want the stronger benchmark profile. Gemini 3.1 Pro only becomes the better choice if reasoning is the priority.
Confidence note. This is a partial-evidence comparison with 21 shared benchmark results across 8 evidence categories; 3 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 Pro is clearly ahead on the BenchAlign aggregate, 67.73 to 55.3. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemini 3 Pro's sharpest advantage is in mathematics, where it averages 32.9 against 31.8. The single biggest benchmark swing on the page is ARC-AGI-2, 77.1% to 31.1%. Gemini 3.1 Pro does hit back in reasoning, so the answer changes if that is the part of the workload you care about most.
Gemini 3 Pro gives you the larger context window at 2M, compared with 1M for Gemini 3.1 Pro.
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 | Gemini 3.1 Pro | Δ | Gemini 3 Pro |
|---|---|---|---|
| Reasoning | Gemini 3.1 Pro77.1 | Margin← 46.0 | Gemini 3 Pro31.1 |
| Multimodal | Gemini 3.1 Pro82.6 | Margin← 1.5 | Gemini 3 Pro81.1 |
| Math | Gemini 3.1 Pro31.8 | Margin→ 1.1 | Gemini 3 Pro32.9 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
ARC-AGI-2
ReasoningA 77.1%B 31.1%Winner: Gemini 3.1 ProΔ 46ARC-AGI-2: Gemini 3.1 Pro scored 77.1%; Gemini 3 Pro scored 31.1%. Gemini 3.1 Pro wins this benchmark. - Source ↗
MMMU-Pro
MultimodalA 83.9%B 81%Winner: Gemini 3.1 ProΔ 2.9MMMU-Pro: Gemini 3.1 Pro scored 83.9%; Gemini 3 Pro scored 81%. Gemini 3.1 Pro wins this benchmark. - Source ↗
FrontierMath v2 (Tier 4)
MathA 16.700%B 18.750%Winner: Gemini 3 ProΔ 2.1FrontierMath v2 (Tier 4): Gemini 3.1 Pro scored 16.700%; Gemini 3 Pro scored 18.750%. Gemini 3 Pro wins this benchmark. - Source ↗
CharXiv
MultimodalA 80.2%B 81.4%Winner: Gemini 3 ProΔ 1.2CharXiv: Gemini 3.1 Pro scored 80.2%; Gemini 3 Pro scored 81.4%. Gemini 3 Pro wins this benchmark. - Source ↗
FrontierMath v2 (Tiers 1-3)
MathA 36.900%B 37.600%Winner: Gemini 3 ProΔ 0.7FrontierMath v2 (Tiers 1-3): Gemini 3.1 Pro scored 36.900%; Gemini 3 Pro scored 37.600%. Gemini 3 Pro wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemini 3.1 Pro | Gemini 3 Pro | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemini 3.1 Pro$2 input / $12 output | Gemini 3 Pro$2 input / $12 output | Listed prices are equal. |
| Generation speedtokens per second | Gemini 3.1 Pro109 tok/s | Gemini 3 Pro109 tok/s | Measured throughput is equal. |
| First-answer latencyseconds to first token | Gemini 3.1 Pro29.71 s | Gemini 3 Pro32.65 s | Gemini 3.1 Pro reaches the first token sooner. |
| Context windowmaximum listed tokens | Gemini 3.1 Pro1M | Gemini 3 Pro2M | Gemini 3 Pro lists the larger context window. |
Benchmark Deep Dive
Agentic17 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| Claw-EvalSource | 57.8% | — | Not comparable |
| DeepSearchQASource | 69.7% | — | Not comparable |
| τ²-bench resultsSource | 95.6% | 87.1% | Gemini 3.1 Pro leads |
| AA Agentic IndexSource | 21.4% | — | Not comparable |
| APEX-Agents-AASource | 32.0% | — | Not comparable |
| GDPval-AASource | 23.2% | — | Not comparable |
| GDPval-AASource | 965 | — | Not comparable |
| Gert LabsSource | 56.87% | 63.23% | Gemini 3 Pro leads |
| ResearchClawBenchSource | 13.3% | — | Not comparable |
| AA AutomationBenchSource | 37.5% | — | Not comparable |
| AA EnterpriseOps-GymSource | 42.2% | — | Not comparable |
| AA Harvey LABSource | 0.0% | — | Not comparable |
| AA ITBenchSource | 30.3% | — | Not comparable |
| AA Tau3 BankingSource | 16.5% | — | Not comparable |
| terminalBenchHardSource | 53.8% | — | Not comparable |
| aaTerminalBench21Source | 73.8% | — | Not comparable |
| JobBenchSource | — | 11.4% | Not comparable |
Coding6 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| LiveCodeBench ProSource | 82.9% | — | Not comparable |
| React Native EvalsSource | 78.9% | — | Not comparable |
| Vibe Code BenchSource | 32.03% | 14.30% | Gemini 3.1 Pro leads |
| AA Coding IndexSource | 68.8% | — | Not comparable |
| AA-SciCodeSource | 58.9% | 56.1% | Gemini 3.1 Pro leads |
| AA LiveCodeBenchSource | — | 91.7% | Not comparable |
ReasoningGemini 3.1 Pro wins3 benchmarks
Knowledge11 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| GPQA-DSource | 94.3% | — | Not comparable |
| HLE w/o toolsSource | 45.4% | — | Not comparable |
| HealthBench HardSource | 20.6% | — | Not comparable |
| MedXpertQA (Text)Source | 71.5% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 46.5% | 39.5% | Gemini 3.1 Pro leads |
| AA-GPQA DiamondSource | 94.1% | 90.8% | Gemini 3.1 Pro leads |
| AA-HLESource | 44.7% | 37.2% | Gemini 3.1 Pro leads |
| AA-Omniscience IndexSource | 32.9% | 15.8% | Gemini 3.1 Pro leads |
| AA-Omniscience AccuracySource | 55.3% | 55.9% | Gemini 3 Pro leads |
| AA-Omniscience Hallucination RateSource | 49.9% | 90.9% | Gemini 3.1 Pro leads |
| AA MMLU-ProSource | — | 89.8% | Not comparable |
MathGemini 3 Pro wins2 benchmarks
Multilingual1 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| AA Global-MMLU-LiteSource | 93.2% | 92.2% | Gemini 3.1 Pro leads |
MultimodalGemini 3.1 Pro wins12 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| MMMU-ProSource | 83.9% | 81% | Gemini 3.1 Pro leads |
| CharXivSource | 80.2% | 81.4% | Gemini 3 Pro leads |
| ERQASource | 69.4% | — | Not comparable |
| SimpleVQASource | 72.4% | — | Not comparable |
| ScreenSpot ProSource | 84.4% | 72.7% | Gemini 3.1 Pro leads |
| ZeroBenchSource | 29.0% | — | Not comparable |
| MedXpertQA (MM)Source | 81.3% | — | Not comparable |
| AA-MMMU-ProSource | 82.4% | 80.2% | Gemini 3.1 Pro leads |
| Design Arena WebsiteSource | 1284 | — | Not comparable |
| MathVisionSource | — | 86.6% | Not comparable |
| VideoMMMUSource | — | 87.6% | Not comparable |
| V*Source | — | 88.0% | Not comparable |
Inst. Following1 benchmarks
| Benchmark | Gemini 3.1 Pro | Gemini 3 Pro | Result |
|---|---|---|---|
| AA-IFBenchSource | 77.1% | 70.4% | Gemini 3.1 Pro leads |
Frequently Asked Questions (4)
Which is better, Gemini 3.1 Pro or Gemini 3 Pro?
Gemini 3 Pro is ahead on BenchLM's BenchAlign leaderboard, 67.73 to 55.3. The biggest single separator in this matchup is ARC-AGI-2, where the scores are 77.1% and 31.1%.
Which is better for math, Gemini 3.1 Pro or Gemini 3 Pro?
Gemini 3 Pro has the edge for math in this comparison, averaging 32.9 versus 31.8. Inside this category, FrontierMath v2 (Tier 4) is the benchmark that creates the most daylight between them.
Which is better for reasoning, Gemini 3.1 Pro or Gemini 3 Pro?
Gemini 3.1 Pro has the edge for reasoning in this comparison, averaging 77.1 versus 31.1. Inside this category, ARC-AGI-2 is the benchmark that creates the most daylight between them.
Which is better for multimodal and grounded tasks, Gemini 3.1 Pro or Gemini 3 Pro?
Gemini 3.1 Pro has the edge for multimodal and grounded tasks in this comparison, averaging 82.6 versus 81.1. Inside this category, ScreenSpot Pro is the benchmark that creates the most daylight between them.
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