# Gemini 3.5 Flash-Lite vs GPT-5.6 Sol

> Side-by-side benchmark comparison for Gemini 3.5 Flash-Lite and GPT-5.6 Sol across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-5-flash-lite-vs-gpt-5-6-sol
- Last updated: September 4, 2026

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

## Quick Verdict

Pick GPT-5.6 Sol if you want the stronger benchmark profile. Gemini 3.5 Flash-Lite only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- GPT-5.6 Sol leads overall 79.65 to 60.5.
- The clearest category separation is in coding, where the averages are 43.6 for Gemini 3.5 Flash-Lite and 74.4 for GPT-5.6 Sol.
- The biggest single benchmark swing is Terminal-Bench 2.0 in Agentic, with scores of 54% and 91.9%.
- Gemini 3.5 Flash-Lite is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- GPT-5.6 Sol also has the larger context window at 1.05M.

## Model Snapshot

| Property | Gemini 3.5 Flash-Lite | GPT-5.6 Sol |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Overall Score | 60.5 | 79.65 |
| Benchmarks Covered | 10 | 35 |
| Pricing (input/output) | $0.30 / $2.50 | $5.00 / $30.00 |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 43.4 (Estimated · #104/151)
- GPT-5.6 Sol public-lane score: 70.1 (Supported · #6/151)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54% | 91.9% | GPT-5.6 Sol |
| OSWorld-Verified | 74% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 50.2% | 85.8% | GPT-5.6 Sol |
| Terminal-Bench 3.0 | Coming soon | 34.6% | Coming soon |
| BrowseComp | Coming soon | 92.2% | Coming soon |
| OSWorld 2.0 | Coming soon | 62.6% | Coming soon |
| CyberGym | Coming soon | 84.5% | Coming soon |
| ExploitGym | Coming soon | 33.7% | Coming soon |
| Toolathlon | Coming soon | 58% | Coming soon |

### Coding

- Winner: GPT-5.6 Sol
- Gemini 3.5 Flash-Lite public-lane score: 43.6 (Supported · #121/183)
- GPT-5.6 Sol public-lane score: 74.4 (Supported · #5/183)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54.0% | 91.9% | GPT-5.6 Sol |
| SWE-bench Pro | 54.2% | 64.6% | GPT-5.6 Sol |
| LiveCodeBench (Vals) | 79.0% | 82.6% | GPT-5.6 Sol |
| SWE-bench (Vals) | 75.0% | 96.2% | GPT-5.6 Sol |
| Bug Hunt Bench | Coming soon | 42 fixes | Coming soon |
| deepSwe | Coming soon | 72.7% | Coming soon |
| FrontierCode 1.1 Extended | Coming soon | 60.6% | Coming soon |
| FrontierSWE v2 | Coming soon | 32.2% | Coming soon |
| cursorBench32 | Coming soon | 67.2% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| VulcanBench CII v1 | Coming soon | 86.5% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 76.1 (#16/48)
- GPT-5.6 Sol public-lane score: 86.4 (#4/48)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 83% | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 84.6% | Coming soon |

### Reasoning

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: 60.8 (Unranked · 3 rankable rows)
- GPT-5.6 Sol public-lane score: 69.8 (#14/22)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 72.2% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 92.5% | Coming soon |
| ARC-AGI-3 | Coming soon | 7.8% | Coming soon |
| GeneBench-Pro | Coming soon | 28.7% | Coming soon |

### Knowledge

- Winner: GPT-5.6 Sol
- Gemini 3.5 Flash-Lite public-lane score: 53 (Supported · #71/181)
- GPT-5.6 Sol public-lane score: 80.4 (Supported · #5/181)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 83.8% | 95.2% | GPT-5.6 Sol |
| MMLU-Pro (Vals) | 85.8% | 89.1% | GPT-5.6 Sol |
| GPQA | Coming soon | 94.6% | Coming soon |
| GPQA-D | Coming soon | 94.6% | Coming soon |
| HLE-Verified | Coming soon | 54.5% | Coming soon |
| LABBench2 | Coming soon | 82.1% | Coming soon |
| HealthBench Professional | Coming soon | 60.5% | Coming soon |
| HealthBench Hard | Coming soon | 33.1% | Coming soon |

### Instruction Following

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- GPT-5.6 Sol public-lane score: 88.8 (#27/120)

### Mathematics

- Winner: Coming soon
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- GPT-5.6 Sol public-lane score: 97 (Unranked · 3 rankable rows)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.6 Sol | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath (legacy) | Coming soon | 89% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 89.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 83.000% | Coming soon |

## FAQ

### Which is better overall, Gemini 3.5 Flash-Lite or GPT-5.6 Sol?

GPT-5.6 Sol is ahead overall on BenchLM right now.

### Where is the biggest gap between Gemini 3.5 Flash-Lite and GPT-5.6 Sol?

The widest category gap is in coding, where the averages are 43.6 for Gemini 3.5 Flash-Lite and 74.4 for GPT-5.6 Sol.

### How many benchmarks does Gemini 3.5 Flash-Lite cover on BenchLM?

Gemini 3.5 Flash-Lite currently has 10 sourced benchmark scores on BenchLM.

### How many benchmarks does GPT-5.6 Sol cover on BenchLM?

GPT-5.6 Sol currently has 35 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Gemini 3.5 Flash-Lite vs GPT-5.6 Terra](/compare/gemini-3-5-flash-lite-vs-gpt-5-6-terra)
- [GPT-5.6 Sol vs GPT-5.6 Terra](/compare/gpt-5-6-sol-vs-gpt-5-6-terra)
- [Gemini 3.5 Flash-Lite vs GPT-5.6 Luna](/compare/gemini-3-5-flash-lite-vs-gpt-5-6-luna)
- [GPT-5.6 Sol vs GPT-5.6 Luna](/compare/gpt-5-6-luna-vs-gpt-5-6-sol)

## Explore More

- [Gemini 3.5 Flash-Lite profile](/models/gemini-3-5-flash-lite)
- [GPT-5.6 Sol profile](/models/gpt-5-6-sol)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)