# Gemma 4 E4B vs GPT-OSS 20B

> Side-by-side benchmark comparison for Gemma 4 E4B and GPT-OSS 20B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-e4b-vs-gpt-oss-20b
- Last updated: October 17, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemma 4 E4B and GPT-OSS 20B share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.

## Model Snapshot

| Property | Gemma 4 E4B | GPT-OSS 20B |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Non-Reasoning |
| Context | 128K | 128K |
| Independent public score (not head-to-head) | 31.02 | 33.32 |
| Benchmarks Covered | 5 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: Coming soon
- GPT-OSS 20B public-lane score: 14.9 (Estimated · #115/128)

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: 12.4 (Estimated · #138/150)
- GPT-OSS 20B public-lane score: 18.2 (Estimated · #123/150)

| Benchmark | Gemma 4 E4B | GPT-OSS 20B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 52.0% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 60.7% | Coming soon |
| React Native Evals | Coming soon | 71% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: 32.4 (Unranked · 3 rankable rows)
- GPT-OSS 20B public-lane score: 49.7 (Unranked · 2 rankable rows)

| Benchmark | Gemma 4 E4B | GPT-OSS 20B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 25.4% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: 22.2 (#52/54)
- GPT-OSS 20B public-lane score: Coming soon

| Benchmark | Gemma 4 E4B | GPT-OSS 20B | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 52.6% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: 26.1 (Estimated · #170/184)
- GPT-OSS 20B public-lane score: 33.9 (Supported · #140/184)

| Benchmark | Gemma 4 E4B | GPT-OSS 20B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 58.6% | 71.5% | GPT-OSS 20B |
| MMLU-Pro | 69.4% | Coming soon | Coming soon |
| MMLU | Coming soon | 85.3% | Coming soon |
| HLE | Coming soon | 10.9% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: 51.9 (#88/148)
- GPT-OSS 20B public-lane score: 79.2 (#60/148)

### Mathematics

- Winner: Insufficient shared evidence
- Gemma 4 E4B public-lane score: Coming soon
- GPT-OSS 20B public-lane score: Coming soon

| Benchmark | Gemma 4 E4B | GPT-OSS 20B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | Coming soon | 92.1% | Coming soon |
| AIME 2025 | Coming soon | 91.7% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemma 4 E4B and GPT-OSS 20B?

Not yet. The models share only 1 sourced benchmark row, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Gemma 4 E4B vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-gemma-4-e4b)
- [GPT-OSS 20B vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-gpt-oss-20b)
- [Gemma 4 E4B vs Gemma 4 31B](/compare/gemma-4-31b-vs-gemma-4-e4b)
- [GPT-OSS 20B vs Gemma 4 31B](/compare/gemma-4-31b-vs-gpt-oss-20b)

## Explore More

- [Gemma 4 E4B profile](/models/gemma-4-e4b)
- [GPT-OSS 20B profile](/models/gpt-oss-20b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)