# Gemini 3 Pro vs GPT-5.2

> Side-by-side benchmark comparison for Gemini 3 Pro and GPT-5.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-pro-vs-gpt-5-2
- Last updated: October 17, 2026

- Shared sourced benchmarks: 23
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Gemini 3 Pro if you want the stronger benchmark profile. GPT-5.2 only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Gemini 3 Pro leads overall 61.18 to 59.86.
- The clearest category separation is in reasoning, where the averages are 50.1 for Gemini 3 Pro and 64.3 for GPT-5.2.
- The biggest single benchmark swing is Vibe Code Bench in Coding, with scores of 14.30% and 53.50%.
- Gemini 3 Pro is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Gemini 3 Pro also has the larger context window at 2M.

## Model Snapshot

| Property | Gemini 3 Pro | GPT-5.2 |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 2M | 400K |
| Overall Score | 61.18 | 59.86 |
| Benchmarks Covered | 27 | 31 |
| Pricing (input/output) | $2.00 / $12.00 | $1.75 / $14.00 |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Gemini 3 Pro public-lane score: Coming soon
- GPT-5.2 public-lane score: 44.4 (Supported · #58/128)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 63.23% | 46.54% | Gemini 3 Pro |
| JobBench | 11.4% | 34.3% | GPT-5.2 |
| BrowseComp | Coming soon | 65.8% | Coming soon |
| OSWorld-Verified | Coming soon | 47.3% | Coming soon |

### Coding

- Winner: Directional only
- Gemini 3 Pro public-lane score: 43 (Estimated · #59/150)
- GPT-5.2 public-lane score: 36.8 (Supported · #73/150)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 14.30% | 53.50% | GPT-5.2 |
| SWE-bench Verified | Coming soon | 80% | Coming soon |
| SWE-bench Pro | Coming soon | 55.6% | Coming soon |

### Reasoning

- Winner: Not comparable
- Gemini 3 Pro public-lane score: 50.1 (Unranked · 4 rankable rows)
- GPT-5.2 public-lane score: 64.3 (Unranked · 4 rankable rows)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 31.1% | 52.9% | GPT-5.2 |
| ARC-AGI-1 | 75.00% | 86.17% | GPT-5.2 |

### Multimodal & Grounded

- Winner: Gemini 3 Pro
- Gemini 3 Pro public-lane score: 80 (#18/54)
- GPT-5.2 public-lane score: 75.9 (#22/54)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 87.2% | 86.7% | Gemini 3 Pro |
| MMMU-Pro | 81% | 79.5% | Gemini 3 Pro |
| RealWorldQA | 83.3% | 83.3% | Tie |
| OmniDocBench 1.5 | 88.5% | 85.7% | Gemini 3 Pro |
| Video-MME (with subtitle) | 88.4% | 86.0% | Gemini 3 Pro |
| Video-MME (w/o subtitle) | 87.7% | 85.8% | Gemini 3 Pro |
| MathVision | 86.6% | 83.0% | Gemini 3 Pro |
| We-Math | 86.9% | 79.0% | Gemini 3 Pro |
| DynaMath | 85.1% | 86.8% | GPT-5.2 |
| SimpleVQA | 73.2% | 55.8% | Gemini 3 Pro |
| MMLongBench-Doc | 60.5% | Coming soon | Coming soon |
| CC-OCR | 79.0% | 70.3% | Gemini 3 Pro |
| AI2D_TEST | 94.1% | 92.2% | Gemini 3 Pro |
| CountBench | 97.3% | 91.9% | Gemini 3 Pro |
| RefCOCO (avg) | 84.1% | Coming soon | Coming soon |
| ODINW13 | 46.3% | Coming soon | Coming soon |
| ERQA | 70.5% | 59.8% | Gemini 3 Pro |
| VideoMMMU | 87.6% | 85.9% | Gemini 3 Pro |
| MLVU (M-Avg) | 83.0% | 85.6% | GPT-5.2 |
| ScreenSpot Pro | 72.7% | Coming soon | Coming soon |
| CharXiv | 81.4% | 82.1% | GPT-5.2 |
| V* | 88.0% | 75.9% | Gemini 3 Pro |

### Knowledge

- Winner: Directional only
- Gemini 3 Pro public-lane score: 60.8 (Estimated · #47/184)
- GPT-5.2 public-lane score: 59.7 (Supported · #50/184)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | Coming soon | 92.4% | Coming soon |

### Instruction Following

- Winner: Directional only
- Gemini 3 Pro public-lane score: 86.1 (#45/148)
- GPT-5.2 public-lane score: 92.6 (#19/148)

### Mathematics

- Winner: Not comparable
- Gemini 3 Pro public-lane score: Coming soon
- GPT-5.2 public-lane score: 71.1 (Unranked · 3 rankable rows)

| Benchmark | Gemini 3 Pro | GPT-5.2 | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | Coming soon | 100% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 67.400% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 31.700% | Coming soon |

## FAQ

### Which is better overall, Gemini 3 Pro or GPT-5.2?

Gemini 3 Pro is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3 Pro and GPT-5.2?

The widest category gap is in reasoning, where the averages are 50.1 for Gemini 3 Pro and 64.3 for GPT-5.2.

### How many benchmarks does Gemini 3 Pro cover on BenchLM?

Gemini 3 Pro currently has 27 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.2 cover on BenchLM?

GPT-5.2 currently has 31 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3 Pro vs Gemini 3 Pro Deep Think](/compare/gemini-3-pro-vs-gemini-3-pro-deep-think)
- [GPT-5.2 vs Gemini 3 Pro Deep Think](/compare/gemini-3-pro-deep-think-vs-gpt-5-2)
- [Gemini 3 Pro vs GPT-5.2 Pro](/compare/gemini-3-pro-vs-gpt-5-2-pro)
- [GPT-5.2 vs GPT-5.2 Pro](/compare/gpt-5-2-vs-gpt-5-2-pro)

## Explore More

- [Gemini 3 Pro profile](/models/gemini-3-pro)
- [GPT-5.2 profile](/models/gpt-5-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)