# Claude 4 Opus Thinking vs Gemma 4 12B

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

- Canonical page: https://benchlm.ai/compare/claude-4-opus-thinking-vs-gemma-4-12b
- Last updated: October 14, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude 4 Opus Thinking and Gemma 4 12B share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Gemma 4 12B has the larger published context window at 256K.

## Model Snapshot

| Property | Claude 4 Opus Thinking | Gemma 4 12B |
|----------|----------|----------|
| Creator | Anthropic | Google |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 256K |
| Independent public score (not head-to-head) | null | 36.95 |
| Benchmarks Covered | 4 | 11 |
| Pricing (input/output) | N/A | N/A |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 22.8 (Estimated · #110/148)

| Benchmark | Claude 4 Opus Thinking | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| LiveCodeBench v6 | Coming soon | 72.0% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 52.6 (Unranked · 3 rankable rows)

| Benchmark | Claude 4 Opus Thinking | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | Coming soon | 43.4% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 59.4 (#44/54)

| Benchmark | Claude 4 Opus Thinking | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| MMMU | 76.5% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 69.1% | Coming soon |
| MathVision | Coming soon | 79.7% | Coming soon |
| MedXpertQA (MM) | Coming soon | 48.7% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 35.7 (Supported · #130/181)

| Benchmark | Claude 4 Opus Thinking | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 79.6% | 78.8% | Claude 4 Opus Thinking |
| MMMLU | 88.8% | 83.4% | Claude 4 Opus Thinking |
| GPQA-D | Coming soon | 78.8% | Coming soon |
| MMLU-Pro | Coming soon | 77.2% | Coming soon |
| HLE w/o tools | Coming soon | 5.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 90.1 (#25/128)

### Mathematics

- Winner: Insufficient shared evidence
- Claude 4 Opus Thinking public-lane score: Coming soon
- Gemma 4 12B public-lane score: 61.3 (Unranked · 1 rankable row)

| Benchmark | Claude 4 Opus Thinking | Gemma 4 12B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 75.5% | Coming soon | Coming soon |
| AIME26 | Coming soon | 77.5% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude 4 Opus Thinking and Gemma 4 12B?

Not yet. The models share only 2 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

- [Claude 4 Opus Thinking vs Claude 4 Opus](/compare/claude-4-opus-vs-claude-4-opus-thinking)
- [Gemma 4 12B vs Claude 4 Opus](/compare/claude-4-opus-vs-gemma-4-12b)
- [Claude 4 Opus Thinking vs Gemma 4 26B A4B](/compare/claude-4-opus-thinking-vs-gemma-4-26b-a4b)
- [Gemma 4 12B vs Gemma 4 26B A4B](/compare/gemma-4-12b-vs-gemma-4-26b-a4b)

## Explore More

- [Claude 4 Opus Thinking profile](/models/claude-4-opus-thinking)
- [Gemma 4 12B profile](/models/gemma-4-12b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)