Model comparison
Gemma 4 12B vs LFM2.5-8B-A1B
Head-to-head evidence from 12 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Gemma 4 12B #137 (Estimated); LFM2.5-8B-A1B #166 (Estimated). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Gemma 4 12B and LFM2.5-8B-A1B share 12 comparable benchmark results. 1 of 8 categories are comparable. 11 results are unique to Gemma 4 12B; 5 to LFM2.5-8B-A1B.
Updated July 23, 2026- Shared results
- 12
- Gemma 4 12B only
- 11
- LFM2.5-8B-A1B only
- 5
- Comparable categories
- 1 / 8
Pick Gemma 4 12B if you want the stronger benchmark profile. LFM2.5-8B-A1B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.
Confidence note. This is a partial-evidence comparison with 12 shared benchmark results across 6 evidence categories; 1 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Gemma 4 12B is clearly ahead on the BenchAlign aggregate, 47.29 to 41.42. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Gemma 4 12B's sharpest advantage is in mathematics, where it averages 77.5 against 50. The single biggest benchmark swing on the page is AIME26, 77.5% to 50.0%.
Gemma 4 12B gives you the larger context window at 256K, compared with 128K for LFM2.5-8B-A1B.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Gemma 4 12B | Δ | LFM2.5-8B-A1B |
|---|---|---|---|
| Math | Gemma 4 12B77.5 | Margin← 27.5 | LFM2.5-8B-A1B50.0 |
| Reasoning | Gemma 4 12B43.4 | MarginNo overlap | LFM2.5-8B-A1BNot measured |
| Knowledge | Gemma 4 12B77.5 | MarginNo overlap | LFM2.5-8B-A1BNot measured |
| Multimodal | Gemma 4 12B69.1 | MarginNo overlap | LFM2.5-8B-A1BNot measured |
| Inst. Following | Gemma 4 12BNot measured | MarginNo overlap | LFM2.5-8B-A1B68.8 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
AIME26
MathA 77.5%B 50.0%Winner: Gemma 4 12BΔ 27.5AIME26: Gemma 4 12B scored 77.5%; LFM2.5-8B-A1B scored 50.0%. Gemma 4 12B wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Gemma 4 12B | LFM2.5-8B-A1B | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Gemma 4 12BNot available | LFM2.5-8B-A1B$0 input / $0 output | A complete price comparison is not available. |
| Generation speedtokens per second | Gemma 4 12BNot available | LFM2.5-8B-A1BNot available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Gemma 4 12BNot available | LFM2.5-8B-A1BNot available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Gemma 4 12B256K | LFM2.5-8B-A1B128K | Gemma 4 12B lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding1 benchmarks
| Benchmark | Gemma 4 12B | LFM2.5-8B-A1B | Result |
|---|---|---|---|
| AA-SciCodeSource | 38.2% | 7.8% | Gemma 4 12B leads |
Reasoning4 benchmarks
Knowledge11 benchmarks
| Benchmark | Gemma 4 12B | LFM2.5-8B-A1B | Result |
|---|---|---|---|
| GPQASource | 78.8% | — | Not comparable |
| GPQA-DSource | 78.8% | — | Not comparable |
| MMLU-ProSource | 77.2% | — | Not comparable |
| HLE w/o toolsSource | 5.2% | — | Not comparable |
| MMMLUSource | 83.4% | — | Not comparable |
| Artificial Analysis Intelligence IndexSource | 22.0% | 8.3% | Gemma 4 12B leads |
| AA-GPQA DiamondSource | 75.3% | 51.3% | Gemma 4 12B leads |
| AA-HLESource | 14.8% | 6.9% | Gemma 4 12B leads |
| AA-Omniscience IndexSource | -51.9% | -33.3% | LFM2.5-8B-A1B leads |
| AA-Omniscience AccuracySource | 16.0% | 9.4% | Gemma 4 12B leads |
| AA-Omniscience Hallucination RateSource | 80.8% | 47.0% | LFM2.5-8B-A1B leads |
MathGemma 4 12B wins3 benchmarks
Multimodal4 benchmarks
Frequently Asked Questions (2)
Which is better, Gemma 4 12B or LFM2.5-8B-A1B?
Gemma 4 12B is ahead on BenchLM's BenchAlign leaderboard, 47.29 to 41.42. The biggest single separator in this matchup is AIME26, where the scores are 77.5% and 50.0%.
Which is better for math, Gemma 4 12B or LFM2.5-8B-A1B?
Gemma 4 12B has the edge for math in this comparison, averaging 77.5 versus 50. Inside this category, AIME26 is the benchmark that creates the most daylight between them.
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