# Gemini 3.1 Flash-Lite vs Phi-3.5-mini

> Side-by-side benchmark comparison for Gemini 3.1 Flash-Lite and Phi-3.5-mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-1-flash-lite-vs-phi-3-5-mini
- Last updated: October 14, 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 Phi-3.5-mini.

## Summary

- Gemini 3.1 Flash-Lite and Phi-3.5-mini 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 | Phi-3.5-mini |
|----------|----------|----------|
| Creator | Google | Microsoft |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 1M | 128K |
| Independent public score (not head-to-head) | 47.21 | null |
| Benchmarks Covered | 11 | 8 |
| Pricing (input/output) | $0.25 / $1.50 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 28.1 (Estimated · #97/124)
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | 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: 27.4 (Estimated · #99/148)
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | 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 |
| HumanEval | Coming soon | 62.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: Coming soon
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | Winner |
|-----------|-----------|-----------|--------|
| JevBench 1.4 | 14.26 | Coming soon | Coming soon |
| JevBench 1.5 | 19.58 | Coming soon | Coming soon |
| BBH | Coming soon | 69% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 42 (Unranked · 1 rankable row)
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 73.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 47 (Estimated · #87/181)
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 81.1% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 86.2% | Coming soon | Coming soon |
| MMLU | Coming soon | 69% | Coming soon |
| MMLU-Pro | Coming soon | 47.4% | Coming soon |
| GPQA | Coming soon | 30.4% | Coming soon |
| MMMLU | Coming soon | 55.4% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: Coming soon
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | Winner |
|-----------|-----------|-----------|--------|
| MGSM | Coming soon | 47.9% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.1 Flash-Lite public-lane score: 44 (Unranked · 1 rankable row)
- Phi-3.5-mini public-lane score: Coming soon

| Benchmark | Gemini 3.1 Flash-Lite | Phi-3.5-mini | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 27.719% | Coming soon | Coming soon |
| GSM8K | Coming soon | 86.2% | Coming soon |

## FAQ

### Can I compare Gemini 3.1 Flash-Lite and Phi-3.5-mini 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 Claude Opus 5.5](/compare/claude-opus-5-5-vs-gemini-3-1-flash-lite)
- [Phi-3.5-mini vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-phi-3-5-mini)
- [Gemini 3.1 Flash-Lite vs GPT-6.1 Sol](/compare/gemini-3-1-flash-lite-vs-gpt-6-1-sol)
- [Phi-3.5-mini vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-phi-3-5-mini)

## Explore More

- [Gemini 3.1 Flash-Lite profile](/models/gemini-3-1-flash-lite)
- [Phi-3.5-mini profile](/models/phi-3-5-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)