# LFM2.5-8B-A1B vs Nemotron 3.5 Bolt E4B BF16

> Side-by-side benchmark comparison for LFM2.5-8B-A1B and Nemotron 3.5 Bolt E4B BF16 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/lfm2-5-8b-a1b-vs-nemotron-3-5-bolt-e4b-bf16
- Last updated: October 23, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: LFM2.5-8B-A1B and Nemotron 3.5 Bolt E4B BF16 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.
- Nemotron 3.5 Bolt E4B BF16 has the lower published output-token price.
- LFM2.5-8B-A1B has the larger published context window at 128K.

## Model Snapshot

| Property | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 |
|----------|----------|----------|
| Creator | LiquidAI | NVIDIA |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 64K |
| Independent public score (not head-to-head) | 30.04 | null |
| Benchmarks Covered | 7 | 19 |
| Pricing (input/output) | $0.00 / $0.00 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- LFM2.5-8B-A1B public-lane score: Coming soon
- Nemotron 3.5 Bolt E4B BF16 public-lane score: Coming soon

| Benchmark | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 | Winner |
|-----------|-----------|-----------|--------|
| BFCL v4 | 49.7% | Coming soon | Coming soon |
| τ²-bench results | 88.1% | 55.1% | LFM2.5-8B-A1B |
| BFCL v3 | Coming soon | 68.5% | Coming soon |
| When2Call Multi-Turn | Coming soon | 63.36% | Coming soon |
| ToolSandbox | Coming soon | 68.77% | Coming soon |
| RelyToolBench | Coming soon | 63.16% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- LFM2.5-8B-A1B public-lane score: 25 (Unranked · 2 rankable rows)
- Nemotron 3.5 Bolt E4B BF16 public-lane score: 29 (Unranked · 1 rankable row)

| Benchmark | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 | Winner |
|-----------|-----------|-----------|--------|
| RULER (64K) | Coming soon | 86.99% | Coming soon |
| LongMemEval | Coming soon | 72.10% | Coming soon |
| LongBench v2 | Coming soon | 50.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- LFM2.5-8B-A1B public-lane score: 25.6 (Supported · #172/187)
- Nemotron 3.5 Bolt E4B BF16 public-lane score: Coming soon

| Benchmark | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 | Winner |
|-----------|-----------|-----------|--------|
| GaRAGe | Coming soon | 42.61% | Coming soon |
| RAGTruth (provider reports) | Coming soon | 77.59% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- LFM2.5-8B-A1B public-lane score: 36.5 (#126/153)
- Nemotron 3.5 Bolt E4B BF16 public-lane score: Coming soon

| Benchmark | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 91.8% | Coming soon | Coming soon |
| IFBench | 56.5% | Coming soon | Coming soon |
| MultiChallenge (provider reports) | Coming soon | 53.10% | Coming soon |
| Brevity Benchmark | Coming soon | 82.52% | Coming soon |
| RoleBench | Coming soon | 67.05% | Coming soon |
| RoleMRC | Coming soon | 80.63% | Coming soon |
| IHEval | Coming soon | 84.79% | Coming soon |
| AgentIF | Coming soon | 25.81% | Coming soon |
| InverseIFEval | Coming soon | 46.84% | Coming soon |
| StructEval-T | Coming soon | 80.40% | Coming soon |
| SysBench | Coming soon | 67.88% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- LFM2.5-8B-A1B public-lane score: 24 (Unranked · 3 rankable rows)
- Nemotron 3.5 Bolt E4B BF16 public-lane score: Coming soon

| Benchmark | LFM2.5-8B-A1B | Nemotron 3.5 Bolt E4B BF16 | Winner |
|-----------|-----------|-----------|--------|
| MATH-500 | 88.8% | Coming soon | Coming soon |
| AIME 2025 | 42.5% | Coming soon | Coming soon |
| AIME26 | 50.0% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between LFM2.5-8B-A1B and Nemotron 3.5 Bolt E4B BF16?

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

- [LFM2.5-8B-A1B vs Nemotron 3.5 Bolt E4B](/compare/lfm2-5-8b-a1b-vs-nemotron-3-5-bolt-e4b)
- [Nemotron 3.5 Bolt E4B BF16 vs Nemotron 3.5 Bolt E4B](/compare/nemotron-3-5-bolt-e4b-vs-nemotron-3-5-bolt-e4b-bf16)
- [LFM2.5-8B-A1B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-lfm2-5-8b-a1b)
- [Nemotron 3.5 Bolt E4B BF16 vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-nemotron-3-5-bolt-e4b-bf16)

## Explore More

- [LFM2.5-8B-A1B profile](/models/lfm2-5-8b-a1b)
- [Nemotron 3.5 Bolt E4B BF16 profile](/models/nemotron-3-5-bolt-e4b-bf16)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)