# Gemini 3.5 Flash-Lite vs GPT-5.4 Pro

> Side-by-side benchmark comparison for Gemini 3.5 Flash-Lite and GPT-5.4 Pro across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

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

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

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for Gemini 3.5 Flash-Lite and GPT-5.4 Pro.

## Summary

- Gemini 3.5 Flash-Lite and GPT-5.4 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 3.5 Flash-Lite | GPT-5.4 Pro |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1.05M |
| Independent public score (not head-to-head) | 60.5 | 61.76 |
| Benchmarks Covered | 10 | 11 |
| Pricing (input/output) | $0.30 / $2.50 | $30.00 / $180.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 43.4 (Estimated · #104/151)
- GPT-5.4 Pro public-lane score: 58.5 (Estimated · #32/151)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54% | Coming soon | Coming soon |
| OSWorld-Verified | 74% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 50.2% | Coming soon | Coming soon |
| BrowseComp | Coming soon | 89.3% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 43.6 (Supported · #121/183)
- GPT-5.4 Pro public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54.0% | Coming soon | Coming soon |
| SWE-bench Pro | 54.2% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 79.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 75.0% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 76.1 (#16/48)
- GPT-5.4 Pro public-lane score: 87.9 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | Coming soon | 94% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 60.8 (Unranked · 3 rankable rows)
- GPT-5.4 Pro public-lane score: 70.1 (Unranked · 2 rankable rows)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 72.2% | Coming soon | Coming soon |
| ARC-AGI-2 | Coming soon | 83.3% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 53 (Supported · #71/181)
- GPT-5.4 Pro public-lane score: 61.2 (Estimated · #36/181)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 83.8% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.8% | Coming soon | Coming soon |
| HLE | Coming soon | 58.7% | Coming soon |
| FrontierScience | Coming soon | 36.7% | Coming soon |
| FrontierScience Research | Coming soon | 36.7% | Coming soon |
| HLE w/o tools | Coming soon | 42.7% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- GPT-5.4 Pro public-lane score: 69 (Unranked · 4 rankable rows)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-5.4 Pro | Winner |
|-----------|-----------|-----------|--------|
| IPhO 2025 (Theory) | Coming soon | 93.5% | Coming soon |
| FrontierMath (legacy) | Coming soon | 50% | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 50.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 37.500% | Coming soon |

## FAQ

### Can I compare Gemini 3.5 Flash-Lite and GPT-5.4 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 3.5 Flash-Lite vs GPT-5.4](/compare/gemini-3-5-flash-lite-vs-gpt-5-4)
- [GPT-5.4 Pro vs GPT-5.4](/compare/gpt-5-4-vs-gpt-5-4-pro)
- [Gemini 3.5 Flash-Lite vs GPT-5.4 mini](/compare/gemini-3-5-flash-lite-vs-gpt-5-4-mini)
- [GPT-5.4 Pro vs GPT-5.4 mini](/compare/gpt-5-4-mini-vs-gpt-5-4-pro)

## Explore More

- [Gemini 3.5 Flash-Lite profile](/models/gemini-3-5-flash-lite)
- [GPT-5.4 Pro profile](/models/gpt-5-4-pro)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)