# Gemini 3.5 Flash-Lite vs GPT-4o

> Side-by-side benchmark comparison for Gemini 3.5 Flash-Lite and GPT-4o across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemini-3-5-flash-lite-vs-gpt-4o
- 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-4o.

## Summary

- Gemini 3.5 Flash-Lite and GPT-4o 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-4o |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 1M | 128K |
| Independent public score (not head-to-head) | 60.5 | 40.49 |
| Benchmarks Covered | 10 | 1 |
| Pricing (input/output) | $0.30 / $2.50 | $2.50 / $10.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 43.4 (Estimated · #104/151)
- GPT-4o public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash-Lite | GPT-4o | 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 |

### Coding

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 43.6 (Supported · #121/183)
- GPT-4o public-lane score: 38.7 (Estimated · #145/183)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-4o | 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-4o public-lane score: Coming soon

### Reasoning

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 60.8 (Unranked · 3 rankable rows)
- GPT-4o public-lane score: Coming soon

| Benchmark | Gemini 3.5 Flash-Lite | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 72.2% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: 53 (Supported · #71/181)
- GPT-4o public-lane score: 38.2 (Estimated · #148/181)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 83.8% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.8% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- GPT-4o public-lane score: 39 (#105/120)

### Mathematics

- Winner: Insufficient shared evidence
- Gemini 3.5 Flash-Lite public-lane score: Coming soon
- GPT-4o public-lane score: 25.3 (Unranked · 1 rankable row)

| Benchmark | Gemini 3.5 Flash-Lite | GPT-4o | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 0.345% | Coming soon |

## FAQ

### Can I compare Gemini 3.5 Flash-Lite and GPT-4o 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-4o mini](/compare/gemini-3-5-flash-lite-vs-gpt-4o-mini)
- [GPT-4o vs GPT-4o mini](/compare/gpt-4o-vs-gpt-4o-mini)
- [Gemini 3.5 Flash-Lite vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gemini-3-5-flash-lite)
- [GPT-4o vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-gpt-4o)

## Explore More

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