# Gemini 3.1 Flash-Lite vs o3-pro

> Side-by-side benchmark comparison for Gemini 3.1 Flash-Lite and o3-pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-flash-lite-vs-o3-pro
- Last updated: October 17, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Gemini 3.1 Flash-Lite and o3-pro.

## Summary

- Gemini 3.1 Flash-Lite and o3-pro do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | Gemini 3.1 Flash-Lite | o3-pro |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 1M | 200K |
| Independent public score (not head-to-head) | 46.96 | 45.38 |
| Benchmarks Covered | 11 | 0 |
| Pricing (input/output) | $0.25 / $1.50 | $20.00 / $80.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 27.4 (Estimated · #100/128)
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | 38.46% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 34.1% | Coming soon | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 27.2 (Estimated · #101/150)
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 0.00% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 80.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 62.8% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: Coming soon
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| JevBench 1.4 | 14.26 | Coming soon | Coming soon |
| JevBench 1.5 | 19.58 | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 42 (Unranked · 1 rankable row)
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 73.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 46.9 (Estimated · #89/184)
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 81.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 44 (Unranked · 1 rankable row)
- o3-pro public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | o3-pro | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 27.719% | Coming soon | Coming soon |

## FAQ

### Can I compare Gemini 3.1 Flash-Lite and o3-pro on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [Gemini 3.1 Flash-Lite vs o3](/compare/gemini-3-1-flash-lite-vs-o3)
- [o3-pro vs o3](/compare/o3-vs-o3-pro)
- [Gemini 3.1 Flash-Lite vs o3-mini](/compare/gemini-3-1-flash-lite-vs-o3-mini)
- [o3-pro vs o3-mini](/compare/o3-mini-vs-o3-pro)

## Explore More

- [Gemini 3.1 Flash-Lite profile](/models/gemini-3-1-flash-lite)
- [o3-pro profile](/models/o3-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)