# Gemma 4 12B vs GPT-5.4 mini

> Side-by-side benchmark comparison for Gemma 4 12B and GPT-5.4 mini across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gemma-4-12b-vs-gpt-5-4-mini
- Last updated: September 4, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Gemma 4 12B and GPT-5.4 mini share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- GPT-5.4 mini has the larger published context window at 400K.

## Model Snapshot

| Property | Gemma 4 12B | GPT-5.4 mini |
|----------|----------|----------|
| Creator | Google | OpenAI |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 400K |
| Independent public score (not head-to-head) | 46.64 | 62.63 |
| Benchmarks Covered | 12 | 19 |
| Pricing (input/output) | N/A | $0.75 / $4.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 47.9 (Estimated · #81/151)
- GPT-5.4 mini public-lane score: 42.4 (Estimated · #113/151)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | Coming soon | 60% | Coming soon |
| OSWorld-Verified | Coming soon | 72.1% | Coming soon |
| MCP Atlas | Coming soon | 57.7% | Coming soon |
| Toolathlon | Coming soon | 42.9% | Coming soon |
| τ²-bench results | Coming soon | 93.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 54.7% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 46.6 (Estimated · #97/183)
- GPT-5.4 mini public-lane score: 42.9 (Supported · #125/183)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | 72.0% | Coming soon | Coming soon |
| Vibe Code Bench | Coming soon | 47.97% | Coming soon |
| FrontierCode 1.1 Main | Coming soon | 27.0% | Coming soon |
| LiveCodeBench (Vals) | Coming soon | 81.5% | Coming soon |
| SWE-bench (Vals) | Coming soon | 73.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 26.1 (#44/48)
- GPT-5.4 mini public-lane score: 57.2 (#31/48)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 69.1% | 76.6% | GPT-5.4 mini |
| MathVision | 79.7% | Coming soon | Coming soon |
| MedXpertQA (MM) | 48.7% | Coming soon | Coming soon |
| MMMU-Pro w/ Python | Coming soon | 78% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 34 (Unranked · 4 rankable rows)
- GPT-5.4 mini public-lane score: 73.5 (Unranked · 2 rankable rows)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| BBH | 53% | Coming soon | Coming soon |
| MRCRv2 | 43.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 40.4 (Supported · #138/181)
- GPT-5.4 mini public-lane score: 56.3 (Supported · #53/181)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 78.8% | 88% | GPT-5.4 mini |
| GPQA-D | 78.8% | Coming soon | Coming soon |
| MMLU-Pro | 77.2% | Coming soon | Coming soon |
| HLE w/o tools | 5.2% | 28.2% | GPT-5.4 mini |
| MMMLU | 83.4% | Coming soon | Coming soon |
| HLE | Coming soon | 41.5% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 83.1% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 84.6% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 89.8 (#21/120)
- GPT-5.4 mini public-lane score: 89.6 (#23/120)

### Mathematics

- Winner: Insufficient shared evidence
- Gemma 4 12B public-lane score: 57.6 (Unranked · 1 rankable row)
- GPT-5.4 mini public-lane score: 44.5 (Unranked · 2 rankable rows)

| Benchmark | Gemma 4 12B | GPT-5.4 mini | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 77.5% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | Coming soon | 28.280% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 2.080% | Coming soon |

## FAQ

### Is there enough evidence to pick between Gemma 4 12B and GPT-5.4 mini?

Not yet. The models share only 3 sourced benchmark rows, 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 12B vs Gemma 4 31B](/compare/gemma-4-12b-vs-gemma-4-31b)
- [GPT-5.4 mini vs Gemma 4 31B](/compare/gemma-4-31b-vs-gpt-5-4-mini)
- [Gemma 4 12B vs Gemma 4 26B A4B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)
- [GPT-5.4 mini vs Gemma 4 26B A4B](/compare/gemma-4-26b-a4b-vs-gpt-5-4-mini)

## Explore More

- [Gemma 4 12B profile](/models/gemma-4-12b)
- [GPT-5.4 mini profile](/models/gpt-5-4-mini)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)