Model comparison
LFM2.5-8B-A1B vs Phi-4
Head-to-head evidence from 12 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
BenchAlign evidence: LFM2.5-8B-A1B estimated; Phi-4 supported. Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. LFM2.5-8B-A1B and Phi-4 share 12 comparable benchmark results. 0 of 8 categories are comparable. 6 results are unique to LFM2.5-8B-A1B; 0 to Phi-4.
Updated July 16, 2026- Shared results
- 12
- LFM2.5-8B-A1B only
- 6
- Phi-4 only
- 0
- Comparable categories
- 0 / 8
Benchmark data for LFM2.5-8B-A1B and Phi-4 is coming soon on BenchLM.
Confidence note. This is a partial-evidence comparison with 12 shared benchmark results across 5 evidence categories; 0 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
BenchLM has partial data for these models, but not enough overlapping benchmark coverage to produce a fair score-level comparison yet.
LFM2.5-8B-A1B has the larger context window at 128K, compared with 16K for Phi-4.
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 | LFM2.5-8B-A1B | Δ | Phi-4 |
|---|---|---|---|
| Math | LFM2.5-8B-A1B50.0 | MarginNo overlap | Phi-4Not measured |
| Inst. Following | LFM2.5-8B-A1B68.8 | MarginNo overlap | Phi-4Not measured |
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | LFM2.5-8B-A1B | Phi-4 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | LFM2.5-8B-A1B$0 input / $0 output | Phi-4$0 input / $0 output | Listed prices are equal. |
| Generation speedtokens per second | LFM2.5-8B-A1BNot available | Phi-435 tok/s | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | LFM2.5-8B-A1BNot available | Phi-42.02 s | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | LFM2.5-8B-A1B128K | Phi-416K | LFM2.5-8B-A1B lists the larger context window. |
Benchmark Deep Dive
Agentic2 benchmarks
Coding2 benchmarks
Reasoning2 benchmarks
Knowledge6 benchmarks
| Benchmark | LFM2.5-8B-A1B | Phi-4 | Result |
|---|---|---|---|
| AA-GPQA DiamondSource | 51.3% | 57.5% | Phi-4 leads |
| AA-HLESource | 6.9% | 4.1% | LFM2.5-8B-A1B leads |
| AA-Omniscience IndexSource | -33.3% | -56.7% | LFM2.5-8B-A1B leads |
| AA-Omniscience AccuracySource | 9.4% | 13.2% | Phi-4 leads |
| AA-Omniscience Hallucination RateSource | 47.0% | 80.5% | LFM2.5-8B-A1B leads |
| Artificial Analysis Intelligence IndexSource | 8.3% | 4.9% | LFM2.5-8B-A1B leads |
Math3 benchmarks
Frequently Asked Questions (3)
Can I compare LFM2.5-8B-A1B and Phi-4 on BenchLM yet?
Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.
Why does this comparison show “coming soon”?
BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.
What data is available for LFM2.5-8B-A1B and Phi-4 today?
LFM2.5-8B-A1B: $0.00 input / $0.00 output per 1M tokens Phi-4: $0.00 input / $0.00 output per 1M tokens Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.
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